GOST 2060-2006

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  ГОСТ 2060-2006

GOST 2060−2006 Bars brass. Specifications (with Change No. 1)

GOST 2060−2006

Group W55

INTERSTATE STANDARD

BARS BRASS

Specifications

Brass rods. Specifications

ISS 77.150.30
GST 18 4570

Date of introduction 2008−01−01

Preface

Goals, basic principles and main procedure of works on interstate standardization have been established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−97 «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. The procedure of development, adoption, application, renewal and cancellation"

Data on standard

1 DEVELOPED by the Technical Committee for standardization TC 106 «Tsvetmetprokat», Scientific-research, project and design Institute for alloys and processing of nonferrous metals «joint-stock company «Institute tsvetmetobrabotka» (JSC «Institute tsvetmetobrabotka»)

2 SUBMITTED by the Technical Secretariat of the Interstate Council for standardization, Metrology and certification

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 29 of June 24, 2006)

The standard was accepted by voting:

Short name of the country on MK (ISO 3166) 004−97	Country code by MK (ISO 3166) 004−97	Abbreviated name of the national authority for standardization
Azerbaijan	AZ	Azstandart
Belarus	BY	Gosstandart Of The Republic Of Belarus
Kazakhstan	KZ	Gosstandart Of The Republic Of Kazakhstan
Kyrgyzstan	KG	Kyrgyzstandard
Moldova	MD	Moldova-Standard
Russian Federation	EN	Federal Agency on technical regulation and Metrology
Tajikistan	TJ	Tajikstandart
Uzbekistan	UZ	Uzstandard
Ukraine	UA	Derzhspozhyvstandart Of Ukraine

4 by Order of the Federal Agency for technical regulation and Metrology on January 26, 2007 N 1-St inter-state standard GOST 2060−2006 introduced as a national standard of the Russian Federation from January 1, 2008

5 REPLACE GOST 2060−90


Information about introduction in action (termination) of this standard is published in the index «National standards».

Information about the amendments to this standard is published in the index «National standards», and the text changes — in the information sign «National standards». In case of revision or cancellation of this standard the appropriate information will be published in the information index «National standards»


The Change N 1, approved and promulgated by the Order of Rosstandart from 26.11.2014 No. 1825-St c 01.09.2015

Change No. 1 made by the manufacturer of the database in the text IUS N 3, 2015

1 Scope

This standard applies to the drawn and extruded brass rods, round, square and hexagonal cross-sections used in various industries.

The standard does not apply to brass rods for machining on automatic.

The standard specifies the dimensions, technical requirements, acceptance rules, methods of control and testing, marking, packaging, transportation and storage of rods.

2 Normative references

This standard uses the regulatory references to the following international standards:

GOST 427−75 Rulers measuring metal. Specifications

GOST 701−89 nitric Acid is concentrated. Specifications

GOST 1012−2013 aviation Gasoline. Specifications

GOST 1497−84 (ISO 6892−84) Metals. Test methods tensile

GOST 1652.1−77 (ISO 1554−76) Alloys copper-zinc. Methods for determination of copper

GOST 1652.2−77 (ISO 4749−84) Alloys copper-zinc. Methods for determination of lead

GOST 1652.3−77 (ISO 1812−76, ISO 4748−84) Alloys copper-zinc. Methods of iron determination

GOST 1652.4−77 Alloys copper-zinc. Methods for determination of manganese

GOST 1652.5−77 (ISO 4751−84) Alloys copper-zinc. Methods for determination of tin

GOST 1652.6−77 Alloys copper-zinc. Methods for determination of antimony

GOST 1652.7−77 Alloys copper-zinc. Methods for determination of bismuth

GOST 1652.8−77 Alloys copper-zinc. Methods for determination of arsenic

GOST 1652.9−77 (ISO 7266−84) Alloys copper-zinc. Method for the determination of sulfur

GOST 1652.10−77 Alloys copper-zinc. Methods for determination of aluminium

GOST 1652.11−77 (ISO 4742−84) Alloys copper-zinc. Methods for determination of Nickel

GOST 1652.12−77 Alloys copper-zinc. Methods for determination of silicon

GOST 1652.13−77 Alloys copper-zinc. Methods for determination of phosphorus

GOST 1770−74 laboratory Glassware measuring glass. Cylinders, beakers, flasks, test tubes. General specifications

GOST 2184−77 the sulfuric Acid. Specifications

GOST 2991−85 wooden disposable Boxes for loads up to 500 kg. General specifications

GOST 2999−75 Metals and alloys. Method of measurement of hardness by Vickers

The Wire GOST 3282−74 General purpose low carbon steel. Specifications

GOST 3560−73 package steel Strip. Specifications

GOST 3773−72 Ammonium chloride. Specifications

GOST 4204−77 sulfuric Acid. Specifications

GOST 4328−77 Sodium hydroxide. Specifications

GOST 4520−78 Mercury (II) nitrate 1-water. Specifications

GOST 4521−78 Mercury (I) nitrate 2-water. Specifications

GOST 4658−73 Mercury. Specifications

GOST 6507−90 Micrometers. Specifications

GOST 6709−72 distilled Water. Specifications

GOST 7502−98 metallic measuring tape. Specifications

GOST 9012−59 (ISO 410−82, ISO 6506−81) Metals. Method of measuring hardness Brinell hardness

GOST 9557−87 flat wooden Pallet size 800x1200 mm. specifications

GOST 9716.1−79 Alloy copper and zinc. Method of spectral analysis on a metal standard samples with photographic registration of spectrum

GOST 9716.2−79 Alloy copper and zinc. Method of spectral analysis on a metal standard samples with photoelectric registration of spectrum

GOST 9716.3−79 Alloy copper and zinc. Method of spectral analysis on the oxide samples with photographic registration of spectrum

GOST 10929−76 Hydrogen peroxide. Specifications

GOST 14192−96 Marking of cargo

GOST 15527−2004 Alloys copper-zinc (brass) pressure treated. Brand

GOST 15846−2002 Products that are sent to the far North regions and equated areas. Packing, marking, transportation and storage

GOST 18242−72* Statistical acceptance inspection by alternative feature. Plans control
_______________
* On the territory of the Russian Federation GOST R ISO 2859−1-2007"Statistical methods. Procedure sampling on alternative grounds. Part 1. Sampling plans consistent parties on the basis of an acceptable level of quality."

GOST 18300−87 ethyl rectified technical. Specifications

GOST 18321−73 Statistical quality control. Methods of random selection of piece products

GOST 21140−88 Tara. System sizes

GOST 21650−76 means of fastening of package cargoes in transport packages. General requirements

GOST 22235−2010 freight Wagons main Railways of 1520 mm. General requirements for ensuring safety during loading-unloading and shunting works

GOST 24047−80 Semi-finished products from nonferrous metals and their alloys. Sampling for tensile test

GOST 24104−2001 laboratory Scales. General technical requirements**
________________
** On the territory of the Russian Federation GOST R 53228−2008 «Scales non-automatic actions. Part 1. Metrological and technical requirements. Test».

GOST 24231−80 non-ferrous metals and alloys. General requirements to selection and preparation of samples for chemical analysis

GOST 24597−81 the packaged goods. Basic parameters and dimensions

GOST 25336−82 Glassware and equipment laboratory glass. The types, basic parameters and dimensions

GOST 25706−83 Magnifier. Types, basic parameters. General technical requirements

GOST 26663−85 transport Packs. Formation with the use of packaging. General technical requirements

GOST 26877−2008 metal Products. Methods of measuring form deviations of

Note — When using this standard appropriate to test the effect of reference standards for the sign «National standards» drawn up as of January 1 of the current year and related information signs, published in the current year. If the reference document is replaced (modified), then the use of this standard should be guided by the replaced (modified) document. If the reference document is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.


(Changed edition, Rev. N 1).

3 Terms and definitions

This standard applies the following terms with respective definitions:

3.1 rod: a Solid product of uniform cross section throughout its length in the shape of a circle, square, regular polygons, supplied in straight lengths or rolled in the Bay.

3.2 Bay, Cut products, rolled into a series of continuous turns.

3.2.1 Bay freespool: the Bay in which the disordered coils held close to each other.

3.2.2 Bay layered orderly winding: the Bay in which the coils are wound in layers parallel to the axis of the Bay in such a way that the successive turns in each layer come one after the other.

3.3 measuring length: the Product of a certain length, specified in the order, straight leg, or in the Bay.

3.4 multiple of the length: Cut integral multiple of the number of core length with an allowance for cutting and a tolerance on the overall length.

3.5 captivity: defect of a surface, representing a delamination of the metal azkabanu forms, United with the base metal on one side.

3.6 dent: Local deepening of various sizes and shapes with sloping edges.

3.7 shell: the deepening on the surface of the product from the chipping of impurities.

3.8 bullies: the Defect of the surface in the form of a wide longitudinal recess with an irregular bottom and the edges formed due to a sharp friction of individual sections of prefabricated about the details of rolling and finishing equipment.

3.9 koltsevatost: recurrent projections or recesses of the metal annular or spiral shape.

3.10 a crack: a Defect of a surface, representing a rupture of the metal.

3.11 stratification: the discontinuity of metal, oriented along the direction of deformation.

3.12 risk: the Defect of the surface of the semifinished product in the form of narrow longitudinal recesses with a rounded or flat bottom, formed as a result of scratching the metal surface protrusions on the surface of rolling and finishing equipment.

3.13 torsion: Deviation form, characterized by the rotation of the cross section relative to the longitudinal axis of the rod.

3.14 curvature: Deviation from straightness, in which not all of the point lying on the geometrical axis of the rod, equidistant from the horizontal or vertical plane.

3.15 cut end Squareness, mm: Deviation from perpendicularity at which the cutting plane forms with the longitudinal planes of steel angle different from 90°.

3.16 corrosion cracking: Destructive process of the joint corrosion and deformation of the metal due to residual or applied stresses.

3.17 residual tensile stress: the Stress remaining in the metal by plastic deformation.

3.18 pouchcove cracks: a Group of cracks radiating from the location of the local defect (shock, nicks, dents).

3.19 the corner radius of: the Amount of acceptable deviation from the shape of the corner.

3.20 the press Utina: an Inconsistent extruded product in the form of delamination of the metal or leakage occurring at the end of the molded product adjacent to the press-residue, as a result of uneven flow of metal during compaction.

4 Assortment

4.1 nominal diameter drawn bar and limit deviations of the diameter must match the values specified in table 1.


Table 1 — nominal diameter drawn bar and limit deviations of the diameter

In millimeters

Nominal diameter	Tolerance on nominal diameter of bars with precision manufacturing
round			square and hex
high	high	normal	high	normal
Up to 3.0 incl.	±0,04	±0,05	±0,10	-	±0,10
SV. 3.0−4.5 incl.	±0,05	±0,08	±0,15	-	±0,15
SV. 4.5 to 6.0 incl.	±0,05	±0,08	±0,15	±0,08	±0,15
SV. 6.0−10.0 incl.	±0,06	±0,11	±0,20	±0,11	±0,20
SV. Of 10.0 to 18.0 incl.	±0,07	±0,14	±0,25	±0,14	±0,25
SV. 18.0 to 30.0 incl.	±0,08	±0,17	±0,30	±0,17	±0,30
SV. 30.0 to 50.0, incl.	±0,10	±0,20	±0,60	±0,20	±0,60
Notes 1 brass lead grade LS63−3 only produce round bars with a diameter of from 3.0 to 20.0 mm, inclusive. 2 diameter For square and hexagonal bars take the diameter of the inscribed circle, i.e. the distance between parallel edges of the rod.

4.2 the nominal diameter extruded rods and limit deviations of the diameter must match the values specified in table 2.


Table 2 — nominal diameter extruded rods and limit deviations of the diameter

In millimeters

Nominal diameter	Tolerance on nominal diameter of bars with precision manufacturing
round		square and hex
high	normal	high	normal
To 10 incl.	±0,18	±0,29	-	-
SV. 10 to 18 incl.	±0,22	±0,35	-	-
SV. 18 to 30 incl.	±0,26	±0,42	±0,26	±0,42
SV. 30 to 50 incl.	±0,31	±0,50	-	±0,50
SV. 50 to 80 incl.	-	±0,60	-	±0,60
SV. 80 to 100 incl.	-	±0,70	-	±0,70
SV. 100 to 120 incl.	-	±1,10	-	-
SV. 120 to 160 incl.	-	±1,25	-	-
SV. 160 to 180 cyl.	-	±1,40	-	-
Note — the Sign «-" means that the bars of specified diameters are not manufactured.

4.3 Diameters, cross-sectional area and theoretical weight of 1 m of extruded and drawn bars are given in Appendix A.

4.4 the length of bars made of random, and multiple dimensional measuring length in segments and in the bays.

In segments.

— random length

from 1500 to 3000 mm, diameter 3 to 4 mm incl.

«2000 «5000», «St. 4» 40 ««

«1000» 4000 «"" 40 «80 ««

«1000» 3000 «"" 80 «100 ««

«500» 3000 «"" 100 mm.

In the party of bars with variable length are allowed the cropped bars: not more than 10% of the batch weight:

length less than 1000 mm, for bars with diameter up to 40 mm incl.,

length less than 500 mm «"" over 40 mm;

— measuring length within off-gage extreme deviations in length for bars:

drawn — +15 mm;

pressed:

with a diameter of 80 mm to +15 mm

«over 80 mm to +20 mm.

Limit deviations of the length measuring bars with the cut ends should not exceed ±100 mm;

— dimensional length within off-gage with an allowance of 5 mm on each cut and with a tolerance in length established for rods of standard length.

Allowed the production of rods with a length which is not specified in 4.4. The maximum deviation along the length, the cut end Squareness, mm, curvature, torsion, radius of curvature of the longitudinal edges of bars and surface quality set by agreement between the consumer and the manufacturer.

4.5 Upon request of the consumer and the manufacturer is allowed to produce drawn bars with diameter up to 12 mm inclusive and extruded bars with a diameter up to 22 mm inclusive, in coils. The length of the rod should be at least 6000 mm.

By agreement between the consumer and the manufacturer, drawn and extruded rods can be produced in bays:

— free of winding (BT);

— layered orderly winding (CU).

4.6 legend bars are placed according to the scheme:

Use the following abbreviations:

method of manufacture:	cold-deformed (drawn) — D, hot-deformed (extruded) — G;
sectional shape:	round — CU, square — KB, hex — CG;
precision manufacturing:	normal — N, increased — P, high.
condition:	soft — M semi — P, solid — T;
length:	random — ND, dimensional — CD;
special conditions:	antimagnetic — AM; soft state of high plasticity — L; the semi-hard state of high ductility — f; solid state of high plasticity. extruded as conventional plasticity With; extruded a state of high plasticity — TS; view angle: without rounding — BS, loopy — SK, with cut ends — OK. regulated requirements for tensile test R; regulated requirements hardness measurement — N: Brinell — HB Vickers — HV; rod in coils freespool — BT; rod in coils layered orderly winding — BOO.

The sign X stands for missing data, also indicate the length and special conditions.

Examples of symbols of bars:

Rod round steel bars, hexagonal, normal accuracy of production, semi-solid, diameter 24 mm, length 3000 mm, brass brand LO62−1, with a rounded angle:

Rod DSGN Л062−1 SK GOST 2060−2006

The same, round steel bars, round, normal precision manufacturing, rigid, 12 mm in diameter and random length, from brass grade LS63−3:

Wire DKRNT 12 ND LS63−3, GOST 2060−2006

The same, solid, square, normal precision manufacturing, with a diameter of 24 mm, random length, brass brand LZHS58−1-1:

Rod GKWNH 24 ND LZHS58−1-1 GOST 2060−2006

The same, round steel bars, square, high precision manufacturing, rigid, diameter 12 mm, length in multiples of 5,000 mm, made of brass stamps LS59−1, antimagnetic:

Rod KITT 12 CD 5000 LS59−1 GOST 2060−2006 AM

The same, round steel bars, round, high precision manufacturing, rigid, diameter 10 mm, length 2000 mm, made of brass of lead grade LS63−3:

Rod DCRT LS63−3, GOST 2060−2006

The same, round steel bars, round, high precision manufacturing, semi-solid, 10 mm diameter, random lengths, made of brass brands L63, high plasticity, with specified requirements for the tensile test:

Rod DCRIT 10 ND L63 f R ГОСТ 2060–2006

The same, round steel bars, square, high precision manufacturing, rigid, diameter 10 mm, random length, brass stamps LS59−1, increased elasticity, without rounding, with specified requirements for the tensile test, in the bays are free of winding:

Rod KITT 10 ND LS59−1 BS R BT GOST 2060−2006

In the case where the user of special conditions not specified, the bars are made with performance conditions at the discretion of the manufacturer.

5 Technical requirements

5.1 Bars manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

5.2 Bars are made from brass brands L63, LS63−3, LS59−1, LS59−1, LS58−2, LS58−3, LS59−2, LZHS58−1-1, LO62−1, LAZH60−1-1, Lzhmc59−1-1, Lmc58−2 according to GOST 15527 with the chemical composition shown in table 3.


Table 3 — Chemical composition of brass

Mass fraction, %
Item
Mark	Limit	Si copper	AI Alu- mi- tions	As a mouse Yak	The same Fe- the Uragan	MP Mar ha Heff	Ni Ni- Kel	Si cream- tions	Sn olo- in	R Foz Fort	Pb Swee- Heff	Sb sur- mA	Bi vis- Mut	Zn zinc	The amount of other elements tov	The estimated density is g/cm, approximately- tional
L63	min.	62,0 — 65,0	-	-	-	-	-	-	-	-	-	-	-	The rest	-	8,5
max.	-	-	0,2	-	-	-	-	0,01	0,07	0,005	0,002	-	0,5
LS63−3	min.	62,0 — 65,0	-	-	-	-	-	-	-	-	2,4- 3,0	-	-	The rest	-	8,5
max.	-	-	0,1	-	-	-	0,10	0,01	0,005	0,002	-	0,25
LS59−1V	min.	57,0 — 61,0	-	-	-	-	-	-	-	-	0,8- 1,9	-	-	The rest	-	8,4
max.	-	-	0,5	-	-	-	-	0,02	0,01	0,003	-	1,5
LS59−1	min.	57,0 — 60,0	-	-	-	-	-	-	-	-	0,8- 1,9	-	-	The rest	-	8,4
max.	-	-	0,5	-	-	-	0,3	0,02	0,01	0,003	-	0,75
LS58−2	min.	57,0 — 60,0	-	-	-	-	-	-	-	-	1,0- 3,0	-	-	The rest	-	8,4
max.	0,3	-	0,7	-	0,6	0,3	1,0	-	0,01	-	-	0,3
LS58−3	min.	57,0 — 59,0	-	-	-	-	-	-	-	-	2,5- 3,5	-	-	The rest	-	Of 8.45
max.	0,1	-	0,5	-	0,5	-	0,4	-	-	-	-	0,2
LS59−2	min.	57,0 — 59,0	-	-	-	-	-	-	-	-	1,5 — 2,5	-	-	The rest	-	8,4
max.	0,1	-	0,4	-	0,4	-	0,3	-	-	-	-	0,2
LZHS58−1-1	min.	56,0 — 58,0	-	-	0,7- 1,3	-	-	-	-	-	0,7- 1,3	-	-	The rest	-	8,4
max.	-	-	-	-	-	-	0,02	0,01	0,003	-	0,5
LO62−1	min.	61,0 — 63,0	-	-	-	-	-	-	0,7 — 1,1	-	-	-	-	The rest	-	8,4
max.	-	-	0,10	-	-	-	0,01	0,10	0,005	0,002	-	0,3
LAZH60−1-1	min.	58,0 — 61,0	0,7- 1,5	-	0,75- 1,50	0,1- 0,6	-	-	-	-	-	-	-	The rest	-	8,3
max.	-	-	-	-	0,01	0,40	0,005	0,002	-	0,7
Lzhmc59−1-1	min.	57,0 — 60,0	0,1 — 0,4	-	0,6- 1,2	0,5- 0,8	-	-	0,3 — 0,7	-	-	-	-	The rest	-	8,3
max.	-	-	-	0,01	0,2	0,01	0,003	-	0,3
Lmc58−2	min.	57,0 — 60,0	-	-	-	1,0 — 2,0	-	-	-	-	-	-	-	The rest	-	8,3
max.	-	-	0,5	-	-	-	0,01	0,1	0,005	0,002	-	1,2
Notes 1 In brass brands L63 allowed mass fraction of Nickel up to 0.3% by mass fraction of copper, which do not take into account the amount of other elements. 2 In brass all brands in coordination with the customer to determine the mass fraction of tin, aluminum, manganese and silicon, the values of which take into account the amount of other elements. 3 For non-magnetic alloys, the mass fraction of iron should not be more than 0.03%. 4 In lead free brass is allowed the mass fraction of Nickel is not more than 0.5%, the brass stamps LS59−1, LS59−1V, LS58−2 and LS58−3 — not more than 1% by mass fraction of copper, which is not taken into account in the total amount of other elements. 5 In brass stamps LS59−1, the sum of the elements of tin and silicon should be not more than 0.5%. 6 In brass brand LS58−2 mass fraction of antimony is allowed not more than 0.1%. 7 In complexly alloyed brass allowed mass fraction of Nickel up to 0.5%, which is not included in the total amount of other elements, and is counted as the mass fraction of copper. 8 In brass brand Lmc58−2 at the customer’s request mass fraction of manganese is set in the range of 3.0%-4,0%. 9 the Calculated density is specified to calculate the reference theoretical mass of products. 10 the Sign «-" means that this element is not standardized and is included in total other elements. 11 Impurities that are not specified in the table take into account the amount of other elements, the list of which is determined by agreement between the consumer and the manufacturer.

5.3 At customer’s request bars and rods, of alloy brands L63, LS59−1 and LS63−3 are made with magnetic properties in accordance with the requirements of GOST 15527.

5.4 Surface bars should be free from contamination, hinder visual inspection, no cracks and delamination.

On the surface allowed individual slivers, dents, shells, scratches, scores and other defects, as well as koltsevatost, traces changes, if they control the sweep cannot make the bars for limit deviation for diameter. Allowed traces of the technological lubricant, as well as the color of a tint and redness of the surface after annealing and etching.

5.5 In bars is not allowed for internal defects in the form of shells, non-metallic inclusions and press utain.

Broken off the end of the rod after removal of the press utiny the method of bend at the dispatch cut.

5.6 At the request of the consumer, the bars should be trimmed evenly from both sides. The cut shall be perpendicular to the axis of the rod.

Cocina cutting of bars shall not exceed the values given in table 4.


Table 4 — cut end Squareness, mm bars

In millimeters

Nominal diameter or the distance between the parallel edges of the rod	Cut end Squareness, mm, not more
Up to 20 incl.	2
SV. 20 to 50 incl.	3
SV. 50 to 100 incl.	4
SV. 100 to 170 incl.	5
SV. 170 to 180 cyl.	7

5.7 Unless specified by the consumer form the ends, rods with a diameter of 80 mm and less are allowed to cut, with cut end Squareness, mm is not regulated.

5.8 deviation from the cross-sectional shape may be within the tolerance on the diameter.

5.9 Bars of square and hexagonal cross-sections may have corners rounded along the entire length. The corner radii drawn bar, square and hexagonal cross-sections are given in table 5.


Table 5 — corner Radii drawn bar, square and hexagonal cross-sections

In millimeters

The distance between the parallel edges of the rod	The radius of the corners
without rounding, max.	loopy
Up to 3.0 incl.	0,2	SV. 0.2 to 0.3 incl.
SV. 3.0 to 6.0 incl.	0,3	SV. 0.3 to 0.5 incl.
SV. 6.0−10.0 incl.	0,4	SV. 0.4 to 0.8 incl.
SV. Of 10.0 to 18.0 incl.	0,5	SV. 0.5 to 1.2 incl.
SV. 18.0 to 30.0 incl.	0,6	SV. 0.6 to 1.8 incl.
SV. 30.0 to 50.0, incl.	0,7	SV. 0.7−2.8 incl.
Note the corner Radii of extruded bars of square and hexagonal cross-sections not regulated.

5 10 drawn bar semi-solid state of the alloys of all grades should be removed residual tensile stresses thermal (low temperature annealing) or a mechanical method.

5.11 the Torsion of square and hexagonal bars in semi-solid and solid States should not exceed the values given in table 6.


Table 6 — Torsion of square and hexagonal bars

In millimeters

The distance between the parallel edges of the rod	Maximum deviation of torsional
1 m	for the total length of the bar
To 17.0 incl.	1,0	5,0
SV. 17.0 to 50.0, incl.	2,0	10,0

The twist is not regulated:

for bars manufactured in coils;

— drawn bar in segments in the soft state and the semisolid state of high plasticity;

— for extruded bars in segments.

5.12 Bars must be straightened. The maximum curvature of the rods 1 m length should not exceed the values given in table 7.


Table 7 — Maximum curvature of bars

A method of manufacturing of bars and the condition of the material	The maximum curvature of a rod 1 m long rod with a nominal diameter or distance between parallel faces of a bar, mm
to 18 incl.	over 18 to 40 incl.	over 40 to 50 incl.	over 50 up to 120.	St. 120
Drawn semi-solid and solid	2,0	2,0	2,0	-	-
Extruded	3,0	4,5	5,0	6,0	9,0

5.13 the Overall curvature of the rod should not exceed the values permissible curvature of 1 m for the total length of the rod in meters.

The curvature is not set:

for bars manufactured in coils;

— drawn bar in segments in the soft state.

5.14 Mechanical properties of bars shall conform to the requirements specified in table 8.


Table 8 — Mechanical properties of bars

Brand of brass	A method of manufacturing	The condition of the material	View C tions *	The nominal diameter or distance between parallel faces mm	Temporary resistance tion , MPa (kgf/mm), not less than	With respect to- ing elongation after break, %, not less than		Hardness, not less
		HB	HV
min.	min.	min.	min.	min.
L63	Drawn	Soft	R	From 3 to 50 incl.	290 (30)	44	40	-	-
N	From 3 to 50 incl.	-	-	-	70	65
Semi-solid	R	From 3 to 40 incl.	370 (38)	17	15	-	-
N	From 3 to 40 incl.	-	-	-	100	121
Solid	R	From 3 to 30 incl.	440 (45)	11	10	-	-
N	From 3 to 30 incl.	-	-	-	130	161
Pressed extra virgin		R	From 10 to 180 cyl.	290 (30)	33	30	-	-
N	From 10 to 180 cyl.	-	-	-	-	65
LS63−3	Drawn	Semi-solid	R	From 10 to 20 incl.	350 (36)	-	12	-	-
N	From 10 to 20 incl.	-	-	-	95	-
Solid	R	From 3 to 9.5 incl.	590 (60)	-	-	-	-
N	From 3 to 9.5 incl.	-	-	-	155	-
Solid	R	10 to 14 incl.	540 (55)	-	-	-	-
N	10 to 14 incl.	-	-	-	143	-
Solid	R	15 to 20 incl.	490 (50)	-	-	-	-
N	15 to 20 incl.	-	-	-	130	-
LS59−1, LS59−1V, LS58−2, LS58−3, LS59−2	Drawn	Soft	R	From 3 to 50 incl.	330 (34)	25	22	-	-
N	From 3 to 50 incl.	-	-	-	80	80
Semi-solid	R	From 3 to 12 incl.	410 (42)	10	8	-	-
N	From 3 to 12 incl.	-	-	-	100	121
Semi-solid	R	From 13 to 20 incl.	390 (40)	15	Twelve	-	-
N	From 13 to 20 incl.	-	-	-	100	121
Semi-solid	R	From 21 to 45 incl.	390 (40)	18	15	-	-
N	From 21 to 45 incl.	-	-	-	100	121
Solid	R	From 3 to 30 incl.	490 (50)	7	5	-	-
N	From 3 to 30 incl.	-	-	-	130	171
Extruded		R	From 10 to 50 incl.	360 (37)	22	18	-	-
N	From 10 to 50 incl.	-	-	-	-	80
Extruded		R	From 55 to 180 cyl.	360 (37)	22	18	-	-
N	From 55 to 180 cyl.	-	-	-	-	70
LZHS58−1-1	Drawn	Semi-solid	R	From 3 to 50 incl.	440 (45)	-	10	-	-
N	From 3 to 50 incl.	-	-	-	130	-
Extruded		R	From 10 to 180 cyl.	290 (30)	-	20	-	-
N	From 10 to 180 cyl.	-	-	-	-	-
LO62−1	Drawn	Semi-solid	R	From 3 to 50 incl.	390 (40)	-	15	-	-
N	From 3 to 50 incl.	-	-	-	100	-
Extruded		R	From 10 to 180 cyl.	360 (37)	-	20	-	-
N	From 10 to 180 cyl.	-	-	-	80	-
LAZH60−1-1	Extruded		R	From 10 to 180 cyl.	440 (45)	-	18	-	-
N	From 10 to 180 cyl.	-	-	-	-	-
Lzhmc59−1-1	Drawn	Semi-solid	R	From 3 to 12 incl.	490 (50)	-	15	-	-
N	From 3 to 12 incl.	-	-	-	130	-
Semi-solid	R	13 to 50 incl.	440 (45)	-	17	-	-
N	13 to 50 incl.	-	-	-	130	-
Extruded		R	From 10 to 180 cyl.	430 (44)	-	28	-	-
H	From 10 to 180 cyl.	-	-	-	80	-
Drawn	Semi-solid	R	From 3 to 12 incl.	440 (45)	-	20	-	-
N	From 3 to 12 incl.	-	-	-	130	-
Semi-solid	R	13 to 50 incl.	410 (42)	-	20	-	-
Lmc58−2	H	13 to 50 incl.	-	-	-	125	-
Extruded		R	From 10 to 180 cyl.	390 (40)	-	25	-	-
N	From 10 to 180 cyl.	-	-	-	80	-
* Type of tests: — R — the tensile test , or ; — N — hardness HB or HV. Notes 1 the Relative elongation is determined to be short () or long () samples. 2 If the order specifies the type of test, the hardness (HB or HV) and any elongation, you need to define (or ), the choice is up to the factory bars. 3 the Sign «-" means that the test is not conducted.

(Changed edition, Rev. N 1).

5.15 as agreed between the consumer and the manufacturer allowed the production of rods of high plasticity with the following standards mechanical properties, as shown in table 9.


Table 9 — Mechanical properties of rods of high plasticity

Brand of brass	A method of manufacturing	The condition of the material	Test*	The nominal diameter or distance between parallel faces mm	Temporary resistance, MPa (kgf/mm), not less than	Elongation after break, %, not less than
min.	min.	min.
L63	Drawn	Soft	R	From 3 to 50 incl.	290 (30)	46	40
Semi-solid	R	From 3 to 40 incl.	370 (38)	27	24
Solid	R	From 3 to 12 incl.	440 (45)	14	11
Extruded		R	From 10 to 180 cyl.	290 (30)	39	35
LS59−1	Drawn	Soft	R	From 3 to 50 incl.	340 (35)	32	30
Semi-solid	R	From 3 to 12 incl.	430 (44)	14	12
Semi-solid	R	From 13 to 20 incl.	430 (44)	16	14
Semi-solid	R	From 21 to 40 incl.	410 (42)	20	17
Solid	R	From 3 to 12 incl.	490 (50)	12	9
Extruded		R	From 10 to 180 cyl.	360 (37)	23	20
* Type of tests: — R — the tensile test , or . Notes 1 the Relative elongation is determined to be short () or long () samples. 2 If the order is not specified, what is the relative elongation, it is necessary to determine (or ), the choice is up to the factory bars.

6 acceptance Rules

6.1 Bars take parties. The party must consist of bars of the same brand of alloy, one cross-sectional shape, one size, one method of manufacture, one state, one precision manufacturing. The party must be issued a document about quality that contains:

is the trademark or name and trademark of manufacturer;

— the name of the country of manufacture;

— legal address of the manufacturer and (or) the seller;

— the symbol bars;

— test results (as required);

— the batch number;

— the weight of the batch.

The weight of the batch should not exceed 6000 kg.

Allowed to issue one document about quality for several batches of bars delivered simultaneously to the same consumer.

6.2 checking the dimensions subjected to 10% of the bars from the party of bays or beams.

6.3 For quality control surface bars from the party selected bars (Bay) «blind» (by the greatest objectivity) according to GOST 18321. The control plans comply with GOST 18242. Number of control rods (coils) is determined by the table 10.


Table 10 — Number of control rods

The number of bars (bays) in the party	Number of control rods (coils)	Rejection number
2−8	2	1
9−15	3	1
16−25	5	1
Correspond 26−50	8	2
51−90	13	2
91−150	20	3
151−280	32	4
281−500	50	6
501−1200	80	8
1201−3200	125	11

The party is considered usable if the number of bars (bays) that do not meet the requirements of 5.4, less than the acceptance number given in table 10. In the case when the rejection number is equal to or greater given in table 10, the batch is rejected.

Allowed to the manufacturer upon receipt of unsatisfactory results in control of every bar.

Allowed the manufacturer to control the surface quality of bars during the production process directly on process equipment.

6.4 To check the curvature taken at least three bars or three bundles of 3000 kg or less.

6.5 To check the twisting select five bars or five bundles of 3000 kg or less. If there is less than five bars, control 100% of bars.

6.6 tested for the absence of the press utiny at the end of the rod adjacent to the press-residue, is carried out on each heat treatment rod.

6.7 To check the internal defects of extruded and drawn bars take two rods, two beams or the two bays of 3,000 kg or less.

6.8 To verify the mechanical properties and the presence of residual tensile stresses taken two rods, two beams or the two bays of 3,000 kg or less.

Under the control of the mechanical properties determined tensile strength and elongation or the toughness in accordance with the symbol bars in order.

Mechanical properties of extruded bars is determined by the requirement of the user.

6.9 To check the chemical composition of the selected two rods, two beams or the two bays of 3,000 kg or less. Allowed the manufacturer checks the chemical composition carried out on the sample taken from the molten metal.

6.10 If unsatisfactory test results on at least one of performance, in addition to surface quality, it conducted a re-test of the doubled sample taken from the same batch.

The results of repeated tests spread to the entire party.

7 Methods of inspection and testing

7.1 the Surface of bars to inspect without the use of magnifying devices.

7.2 Verification of dimensions is carried out on each selected 6.2 rod or Bay and 10% of bars in each beam.

7.3 Control rods carried out with a micrometer according to GOST 6507. The bar length is measured by tape according to GOST 7502 or metal ruler according to GOST 427.

7.4 Torsion, the curvature, the cosine of the cut, the deviation from the cross-sectional shape of bars measured in accordance with GOST 26877.

The corner radii drawn bar, square and hexagonal cross-sections provided by the technology manufacturer. In case of disagreement, the value of curvature angle was determined by optical projection.

To check the torsion and curvature of each beam is taken from the party, taken by one rod.

Allowed to use other means of measurement and control, providing the required accuracy.

7.5 Check for internal defects and the absence of the press utiny in extruded bars is carried out at the end of the rod adjacent to the press-residue, non-destructive inspection method according to methodology described in Appendix B, or method of fracture. At the bend in the bars should not be press utiny, sinks, non-metallic inclusions. Kink in the delivery of bars not cropped.

Testing for the presence of shells and non-metallic inclusions is carried out according to the method of the manufacturer.

7.6 Check drawn bar in the presence of internal defects is carried out by fracture. The check is put both ends of the rod. At the bend in the bars should not be press utain, sinks, non-metallic inclusions. Kink in the delivery of bars not cropped.

7.7 For checking metal in the presence of internal defects by breaking the bars must be notched with one or two sides. The incision should be made so that the fracture passed through the Central part of the rod.

The width of the fracture must be:

— not less than 60% diameter -for bars with diameter up to 16 mm, inclusive;

— not less than 10 mm, for bars with diameter over 16 mm.

Inspection of the fracture is carried out visually without the use of magnifying devices.

7.8 Test bars tensile (determination of strength and elongation after fracture) or Brinell hardness number or Vickers carried out on samples taken from each selected batch of rod, beam or Bay. From each selected rod, beam or Bay, take one sample for each test.

Sampling for tensile tests carried out according to GOST 24047.

Allowed for rods with cross-sectional area of 120 mmto produce samples with a diameter of 6,0; 8,0; 10,0 mm from the Central part of the rod.

The tensile test is carried out according to GOST 1497.

Test Brinell hardness number (HB) is carried out according to GOST 9012.

Test the Vickers hardness (HV) is carried out according to GOST 2999.

7.9 To check the chemical composition of the selected one sample from each selected based on 6.9 bar or Bay and one sample from each selected beam. The selection and preparation of samples for chemical analysis is carried out according to GOST 24231.

Chemical composition of bars including alloy LS59−1V, LS58−2, LS58−3 and LS59−2, determined according to GOST 1652.1 — 1652.13 GOST, GOST 9716.1 — GOST 9716.3 or other methods of equal accuracy standard.

If there is disagreement in assessing the quality of the chemical composition of bars is determined according to GOST 1652.1 — 1652.13 GOST, GOST 9716.1 — GOST 9716.3.

7.10 Removal of residual tensile stresses on the rods is provided by the technology manufacturer.

The presence of residual tensile stresses control the breakdown of mercury by the method given in Appendix b, or the ammonia method, according to methodology described in Appendix G, at the option of the manufacturer.

In the case of disagreements in the assessment of the quality bars in the presence of residual tensile stresses control the breakdown of mercury.

7.11 is allowed by agreement between manufacturer and consumer to apply the statistical methods control the size, curvature, twisting, deviation from the cross-sectional shape and mechanical properties of bars.

7.12 permitted the manufacturer to use other testing methods, providing the required accuracy set out in this standard.

7.13 in case of disagreement in assessing the quality of bars the consumer and the manufacturer are guided by the requirements established by this standard.

8 Marking, packaging, transportation and storage

8.1 each beam or the Bay must be attached to a metal, cardboard or plywood label, which indicate:

is the trademark or name and trademark of manufacturer;

— the name of the country of manufacture;

— the symbol bars;

— the batch number;

— the stamp of the technical control room or controller.

At the end of bars with a diameter greater than 40 mm shall be embossed;

— grade or the symbol of the brand of alloy;

— the batch number;

— stamp of technical control.

These data allowed to put permanent paint on the side surface of the rod or applied to self-adhesive sticker, which is mounted on the end face or lateral surface of the rod.

By agreement with the consumer allowed to send bars with no marking in the presence of the package, transport tag, which indicates the grade of alloy, the size of the rod and the batch number.

Legend grades of alloy given in table 11.


Table 11 — legend brands of alloy

Grade	Marking
L63	L63
L63 antimagnetic	Л63А
LS59−1	M
LS59−1 antimagnetic	MA
LS59−1V	MB
LS63−3	L63−3
LS63−3 antimagnetic	L63−3A
LO62−1	LO
LZHS58−1-1	Lzhs
Lmc58−2	LM
Lzhmc59−1-1	LIM
LAZH60−1-1	The MESS
LS58−2	Л58−2
LS58−3	Л58−3
LS59−2	Л59−2

(Changed edition, Rev. N 1).

8.2 Bars with a diameter from 5 up to 40 mm are tied in bunches or Bay weight not exceeding 80 kg each. Each bundle should consist of at least three bars and should be tied with wire in two turns with a diameter of 1.2 mm according to GOST 3282 in at least two places so as to exclude the mutual movement of the rods in the beam. The ends of the wire connected by twisting at least five turns. Each Bay needs to be tied up with a wire according to GOST 3282 in at least three places evenly around the circumference of the Bay.

Allowed a bunch of bundles with packing tape section of at least 0,3x30 mm 3560 churchyard.

By agreement between manufacturer and consumer with mechanized loading and unloading is allowed the weight of the beams and coves more than 80 kg.

8.3 Bars with a diameter less than 5 mm are Packed in wooden boxes of types I, II-1, III-1 2991 churchyard. Dimensions of boxes — GOST 21140. Allowed the packaging of bars in returnable metal containers at target documents.

At the request of the consumer drawn rods with diameter up to 10 mm inclusive and high manufacturing high precision associated in bundles or Bay, Packed in synthetic or non-woven materials according to the normative documents, ensure quality safety bars.

8.4 Consolidation packages in overpacks carried out in accordance with the requirements of GOST 26663.

Dimensions of packages — according to GOST 24597.

The means of fastening in transport packages — according to GOST 21650.

Maximum permissible mass of cargo room — 5000 kg.

Maximum weight of freight in rail transport must comply with the requirements of GOST 22235.

The mass of the overpack during transport in covered wagons should not exceed 1250 kg.

It is allowed to transport the bars in packages weighing up to 1500 kg without tying them in bundles, when there is no overload in the way.

8.5 Packaging boxes, bundles and individual rods, not bound in bundles, carried out without pallets with the use of bars not less than 50 mm or on pallets according to GOST 9557 when the length of the rod is not more than 1.2 m with binding wire of diameter not less than 2 mm in two turns according to GOST 3282 or tape not less than 0,3х30 mm according to GOST 3560, as well as using a sling also packageable wire according to GOST 3282 diameter not less than 5 mm with the twist of not less than three turns.

8.6 Requirements for means of packaging and packaging of bars sent to the far North regions and equated areas according to GOST 15846.

8.7 Bars transporterowych by all kinds of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this species.

8.8 Transport marking under GOST 14192 with the application of additional labels batch numbers.

8.9 Bars should be stored indoors and protected from mechanical damage, moisture and active chemical substances.

9 manufacturer’s Warranty

9.1 the Manufacturer guarantees the conformity of bars present standard requirements provided the customer observes the conditions of transportation and storage.

9.2, 9.3 (Deleted, Rev. N 1).

Annex a (informative). Diameters, cross-sectional area and theoretical weight of 1 m of extruded and drawn bars

Appendix A
(reference)

Table A. 1

Nominal diameter, mm	The cross-sectional area of bars, mm			Theoretical weight of 1 m of bars, kg
round	square	hex	round	square	hex
3,0	Of 7.07	9,0	7,8	0,060	0,08	0,07
3,5	9,62	12,3	10,6	0,080	0,10	0,09
4,0	12,57	16,0	13,9	0,106	0,14	0,12
4,5	15,90	20,3	17,5	0,135	0,17	0,15
5,0	19,6	25,0	21,7	0,17	0,21	0,18
5,5	23,8	30,3	26,2	0,20	0,26	0,22
6,0	28,3	36,0	31,2	0,24	0,31	0,27
6,5	33,2	42,3	36,6	0,28	0,36	0,31
7,0	38,5	49,0	42,4	0,33	0,42	0,36
7,5	44,2	56,2	48,7	0,38	0,48	0,42
8,0	50,3	64,0	55,4	0,43	0,54	0,47
8,5	56,7	72,2	62.6 per	0,48	0,61	0,53
9,0	63,6	81,0	70,2	0,54	0,69	0,60
9,5	70,9	90,2	The 78.2	0,60	0,77	0,66
10,0	78,5	100,0	86,6	0,67	0,85	0,74
11,0	95,0	121,0	104,8	0,81	1,03	0,89
12,0	113,1	144.0 dt	To 124.7	0,96	1,22	1,06
13,0	132,7	169,0	Of 145, 4	1,13	1,44	1,26
14,0	153,9	196,0	169,7	Of 1.31	1,67	1,44
15,0	176,7	225,0	194,9	1,50	Of 1.91	1,66
16,0	201,1	256,0	221,7	1,71	2,18	Of 1.88
17,0	U.S. $ 227.0	289,0	250,3	1,93	2,46	2,13
18,0	254,5	324,0	280,6	Of 2.16	2,75	2,39
19,0	283,5	361,0	312,6	2,41	3,07	Of 2.66
20,0	314,2	400,0	346,4	2,67	3,40	2,94
21,0	346,4	441,0	381,9	2,94	3,75	3,25
22,0	380,1	484,0	419,1	3,23	4,11	3,56
23,0	Of 415.3	529,0	458,1	3,53	4,50	3,89
24,0	452,4	576,0	498,8	3,85	4,90	4,24
25,0	490,9	625,0	541,3	4,17	5,31	4,60
26,0	530,9	676,0	585,5	Of 4.51	5,75	4,98
27,0	572,6	729,0	631,0	4,87	6,20	5,36
28,0	615,8	784,0	679,0	Of 5.23	Of 6.66	5,77
30,0	706,9	900,0	779,0	6,01	7,65	6,62
32,0	804,2	1024,0	887,0	6,84	8,70	7,54
35,0	962,1	1225,0	1060,9	8 and 18	Of 10.41	Of 9.02
36,0	1017,9	1296,0	1122,0	8,65	11,02	Of 9.54
38,0	1134,1	1444,0	1250,5	9,64	12,27	10,63
40,0	1256,6	1600,0	1385,7	10,68	13,60	11,78
41,0	1319,6	1681,0	1456,0	11,22	14,29	12,38
42,0	1385,4	1764,0	1527,6	11,78	14,99	12,98
45,0	1590,4	2025,0	1753,8	13,52	Of 17.21	Of 14.91
46,0	1661,1	2116,0	1832,0	14,12	17,99	15,57
48,0	1809,6	2304,0	1995,3	15,33	19,58	16, and 96
50,0	1963,5	2500,0	2190,0	16,69	21,25	18,40
55,0	2375,8	3025,0	2620,0	20,19	25,71	22,27
60,0	2827,4	3600,0	3118,0	Of 24.03	30,60	26,50
65,0	3318,3	4225,0	3659,0	28,21	35,91	Of 31.10
70,0	3848,5	4900,0	4243,0	32,71	41,65	36,07
75,0	4417,9	5625,0	4871,0	37,55	47,81	41,40
80,0	5026,6	6400,0	5542,0	42,73	54,40	47,11
85,0	5674,5	7225,0	6256,9	48,23	Amounted 61.41	53,18
90,0	6361,7	8100,0	7014,0	54,07	68,70	59,62
95,0	7088,2	9025,0	7815,7	60,25	76,71	Of 66.43
100,0	7854,0	10000,0	8660,0	66,76	85,00	73,61
110,0	9503,3	12100,0	10478,6	80,78	102,85	89,07
120,0	11309,7	14400,0	12470,4	96,13	122,40	Of 106.00
130,0	13273,3	16900,0	14635,4	112,82	143,65	124,40
140,0	15393,8	19600,0	16973,6	130,85	166,60	144,28
150,0	17671,5	22500,0	19485,0	150,21	191,25	165,62
160,0	20106,2	25600,0	22169,6	170,90	217,60	188,44
170,0	22698,0	28900,0	25027,4	192,93	245,65	212,73
180,0	25446,9	32400,0	28058,4	216,30	275,40	238,50
Note — When calculating the theoretical mass density of brass is taken equal to 8.5 g/cm.

Annex B (reference). Methods of control of the press utain

Appendix B
(reference)

The technique is intended for ultrasonic inspection to detect and determine where the end of the press utiny in extruded bars and rods of non-ferrous metals and alloys with a diameter of 10 mm and more with the help of ultrasonic flaw detection means in the contact mode of entering of ultrasonic vibrations from the cylindrical surface of the product.

B. 1 Equipment and standard samples

B. 1.1 is used To control: devices to scan with the built dual, or direct combined transducers of ultrasonic testing; ultrasonic testing-flaw detector; standard samples; assistive devices and adaptations to ensure constant control parameters (insertion angle of the acoustic contact, the scan step),

B. 1.2 may be applied to any ultrasonic flaw detector in conjunction with sensors that provide sufficient sensitivity, the value of which is set by the setting according to the standard model.

B. 1.3 the Standard model for sensitivity setting of ultrasonic equipment during the inspection, is made of a piece of defect-free rod of length 300 mm, diameter 180; 140; 100; 60; 40; 26 mm, made of the same material, and a controlled rod or material with similar acoustic properties and having the same surface quality, and a controlled rod.

B. 1.4 Standard sample to adjust the sensitivity of the apparatus when the control rods must conform to figure B. 1. Diameter of workpiece for standard sample is selected depending on the diameter of the rod controlled in accordance with table B. 1.

Figure B. 1 is a Standard sample to adjust the sensitivity of the apparatus

Figure B. 1 is a Standard sample to adjust the sensitivity of the apparatus

Table B. 1

In millimeters

Diameter of workpiece for standard sample	The controlled diameter of the rod
180	180−140
140	140−100
100	100−80
60	80−50
40	50−30
25	30−10

B. 1.5 Plot of the products from which is made the standard sample, must not have internal defects of a metallurgical origin that could be detected by ultrasonic method when setting up the detector at the highest real sensitivity.

B. 1.6 As the outer surface of the standard sample should not be worse than controlled products.

B. 1.7 Standard sample must have a certificate approved by the Director.

B. 2 Preparing to monitor

B. 2.1 Before the control rods must be cleaned from dirt, dust, oils and other contaminants.

B. 2.2 the Inclusion of the instrument in the network and it is carried out in accordance with technical description and manual of the instrument used to control.

B. 3 control

B. 3.1 quality Control of the continuity of the metal bars based on the use of hometta.

B. 3.2 Enter the ultrasonic waves in the metal rod is carried out by contact method.

B. 3.3 metal Control rod on the absence of defects is accomplished by scanning the surface of the controlled rod of the ultrasonic beam. Control place must be comfortable and allow free access around the circumference to a manageable end of the rod.

B. 3.4 Monitoring is carried out starting from the rear end of the extruded rod. The temperature of the controlled rod should be no higher than 40 °C.

B. 3.5 When monitoring should take into account that the press Utina bars has an elongated shape and different orientation of reflecting surfaces relative to the generatrix and are often located close to the end of the rod, so the detection of it with various parts of the surface may be different.

B. 3.6 For mechanized scanning of the sensor over the surface of the controlled rod is recommended to use a roller, prismatic or other devices with built-in ultrasonic sensors.

B. 3.7 Bars with a diameter less than 60 mm control on the ultrasonic frequency of 5 MHz, and bars and rods with diameter more than 60 mm in the ultrasonic frequency of 2.5 MHz. When determining the end of the press utiny bars of a material having an elastic anisotropy with a coarse-grained structure, it is recommended to use lower frequencies.

B. 3.8 During the inspection, the scanner is mounted on the controlled end of the rod and firmly presses the transducer against the surface, while on the flaw detector screen should appear bottom echo. With the appearance of the bottom echo starts moving the scanning device around and along the rod.

B. 3.9 the scanning Speed of the sensor along the surface of the rod is selected from the conditions for obtaining reliable acoustic contact, it should not exceed 0.5 m/s in automated devices and 0.15 m/s during manual scanning.

B. 3.10 the Correct setting of flaw detection equipment checked at least once during the 2 h operation of the instrument with a standard sample.

B. 3.11 moving the sensor along and around the rod it is necessary to watch the screen of the flaw detector for the presence of acoustic contact. Stable bottom echo indicates a satisfactory entry of ultrasonic testing in bars. If sensor is working and properly configured equipment, the echo disappears, then test the reliability of the acoustic coupling by increasing the supply of contact fluid and wiping with rags the surface of the rod.

B. 3.12 After the detection of the press utiny sensor is moved along the rod to determine the length of the press utiny and where it ends. In the area where there is a complete disappearance of the additional echo signal to the left of bottom reflections, by rotating the device to scan around the bar make sure at the end of the press utiny around the entire circumference of the rod.

B. 3.13 by using ultrasound the exact location of the end of the press utiny, applied to the product good visible mark around the circumference of the rod for cutting.

B. 3.14 Under the control of alloys, having proveedores coarse-grained structure, it is necessary to carefully control the rear end of the rod where the structural disturbance below the bottom echo steady. On the background of unstable structural interference notice on the screen of the flaw detector the location of the echo from the press utiny. Moving the scanning device along the rod, continuously observe the echo from the press utiny, which, in contrast to structural interference, stable.

B. 4 Evaluation of results

B. 4.1 Assessment of the continuity of the metal bars is carried out according to the results of the analysis.

B. 4.2 About the presence of the press utiny judged by the appearance of additional echo to the left of the bottom reflection.

B. 4.3 About the end of the press utiny evidenced by the disappearance of the additional echo signal to the left of the bottom reflection.

Annex b (recommended). Control method brass rods to the presence of residual tensile stresses mercury breakdown

The App
(recommended)

This methodology establishes the method of accelerated testing brass rods to the presence of residual tensile stresses in the solution of nitrate of mercury.

B. 1 Apparatus, reagents and solutions

Magnifier with GOST 25706.

Nitric acid according to GOST 701.

Sulfuric acid according to GOST 2184.

Mercury nitrate 1-water according to GOST 4520.

Mercury nitrate 2 water according to GOST 4521.

Mercury GOST 4658.

Distilled water according to GOST 6709.

Standard solutions of mercury.

Solution a: 11.4 g nitrate 2-water of mercury or nitrate of 10.7 g of 1-water mercury dissolved in 40 cmof distilled water acidified with 10 cmof nitric acid. After complete dissolution of the crystals the solution is diluted with distilled water to 1000 cm.

Solution B: 76 g of mercury was dissolved in 114 cmdiluted in the ratio 1:1 (one part water and one part acid) nitric acid. The volume of the resulting solution is brought to 1000 cm, gradually adding distilled water with constant stirring.

The excess of acid by dissolving required to prevent the deposition of basic salts of mercury.

The resulting solution contains 100 g of mercury nitrate in 1 DMthe excess of (30 cm) of nitric acid.

The test was taken 100 cmof solution, add 7 cmof nitric acid solution with a mass fraction of 10% and the volume was adjusted solution with water to 1000 cm.

B. 2 preparation for the test

V. 2.1 the Length of samples must be not less than 150 mm.

Note — Samples shall be marked so to avoid any residual stresses.

V. 2.2 Samples should be degreased and should not have oxide films and surface defects.

To remove oxide films immersed in aqueous solution of sulfuric acid with a mass fraction of 15% or a solution of nitric acid with a mass fraction of 40% at 30 C.

After etching the samples immediately washed thoroughly in running water, then remove the surface of the water.

V. 2.3 preparation of solutions A and B should take into account the content of crystallized water in the salt nitrate of mercury, as mercury nitrate is photosensitive and becomes insoluble form.

V. 2.4 When heated and in the process of preparation of solutions A and B it is necessary to exclude the loss of nitrate of mercury.

V. 2.5 preparation of solutions A and B need to use rubber gloves.

V. 2.6 mercury Removal should be carried out on special equipment.

B. 3 testing

V. 3.1 Samples immersed in solution a or B. Upon partial immersion of the sample in a solution of nitrate of mercury, the length of the immersed part shall not be less than specified in B. 2.1.

The flow rate of the solution A or B must be at least 1.5 cmby 1 cmsample surface.

V. 3.2 Tests carried out at room temperature.

V. 3.3 after 30 minutes the sample is removed from a solution of nitrate of mercury, and washed with running water. With the surface of the specimen remove excess of mercury.

V. 3.4 sample Inspection is carried out after the test no earlier than 30 min, if in the technical specifications indicated exposure time.

B. 4 Evaluation of results

V. 4.1 Assessment of residual tensile stresses is carried out by results of inspection of the surface of the sample tested.

The samples are inspected with a magnifying glass in from 10 to 18-fold increase.

V. 4.2 If you have any doubt regarding cracking the mercury on the sample surface should be removed by heating.

Annex G (recommended). Control method brass rods to the presence of residual tensile stresses by ammonia method

Appendix D
(recommended)

Control brass rods to the presence of residual tensile stresses that cause stress corrosion cracking of alloy, carried out in the environment of ammonia for 24 hours

G. 1 Equipment materials

G. 1.1 laboratory Scales according to GOST 24104 or the other, ensuring the accuracy of the weight measurements is ±0.1 g.

G. 1.2 pH-meter-millivoltmeter type PH-150 or other equipment that provides accuracy pH ±0,05.

G. 1.3 Desiccators with GOST 25336.

G. 1.4 Cup measuring, volumetric flasks with a capacity of 1 DMaccording to GOST 1770.

G. 1.5 Ammonium chloride according to GOST 3773.

G. 1.6 distilled Water according to GOST 6709.

G. 1.7 Sodium hydroxide according to GOST 4328, 30% solution.

G. 1.8 sulfuric Acid according to GOST 4204, 5% solution.

G. 1.9 Hydrogen peroxide according to GOST 10929, 30% solution.

G. 1.10 the aviation Gasoline according to GOST 1012 or technical rectified ethyl alcohol according to GOST 18300.

G. 2 Conditions of test

2.1 ambient Temperature — 20 °C to 30 °C. During the arbitration of the test the ambient temperature shall be (25±1) °C.

2.2 Mechanical effects should be absent.

G. 3 Preparation of samples to test

G. 3.1 Samples represent segments with a length of (100±10) mm.

G. 3.2 Samples should not have sinks, scratches, dents and other defects.

G. 3.3 Before the test, the samples are degreased by wiping with gasoline or alcohol. Dirt or grease should be removed completely from the surface of the samples.

G. 3.4 removal of oxides the surface of the samples etched in 5% sulfuric acid solution for 30−60 s.

G. 3.5 After etching samples were washed in running water and carefully dried.

G. 4 preparing the environment for testing

4.1 Suspension of ammonium chloride (107±0.1) g was placed in a beaker with a capacity of 1 DMand dissolve in water. The volume is adjusted to 500 cm.

4.2 Set the pH of the solution of ammonium chloride and 9.4 and 9.6 by adding in small portions into a solution of ammonium chloride 30−50% solution of sodium hydroxide to the desired pH value. Measurement of pH of the solution is carried out at a pH-meter.

4.3 Titrated solution of ammonium chloride is transferred to a volumetric flask with a capacity of 1 DMand made up to mark with distilled water. Again check pH, which should be in the range from 9.4 to 9.6.

G. 5 test

5.1 For testing, use a freshly prepared solution of ammonium chloride with a pH value of 9.4 and 9.6.

5.2 the Volume of the solution for testing needs to be 200 cmin 1 DMtotal volume of the vessel.

5.3 Dry the samples placed on a stand so that a pair of ammonia had free access to the surface of the test sample. The desiccator is sealed.

5.4. the Test was carried out for 24 hours

5.5 After the test, the samples are removed from the desiccator.

5.6 For removal of corrosion products the samples are cleaned in a pickling solution of 5% sulfuric acid with addition of 20−50 cmof hydrogen peroxide to 1 DMetching solution (for brightening the surface of the sample).

G. 6 Evaluation and presentation of results

G. 6.1 Inspection of the sample surface is carried out visually, without the use of magnifying devices.

G. 6.2 Crack, found at a distance of not more than 10 mm from the cutting place, and pouchcove not take into account.

G. 6.3 Samples considered satisfactory if, at the sample surface are absent longitudinal cracks.

7 safety

7.1 When tested must comply with the rules work in the chemical laboratory.