GOST 31366-2008

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  ГОСТ 31366-2008

GOST 31366−2008 brass Rods for machining on automatic. Specifications (with Change No. 1)

GOST 31366−2008

Group W55

INTERSTATE STANDARD

BRASS RODS FOR MACHINING ON AUTOMATIC

Specifications

Brass rods for free machining purposes. Specifications

ISS 77.150.30
GST 18 4570

Date of introduction 2010−01−01

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 open joint stock company «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. 33 dated 6 June 2008)

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
Belarus	BY	Gosstandart Of The Republic Of Belarus
Georgia	GE	Gosstandart
Kazakhstan	KZ	Gosstandart Of The Republic Of Kazakhstan
Kyrgyzstan	KG	Kyrgyzstandard
Russian Federation	EN	Federal Agency on technical regulation and Metrology
Tajikistan	TJ	Tajikstandart
Uzbekistan	UZ	Uzstandard

4 this standard takes into account the basic regulations of the European standard EN 12164:1998, «copper and Copper alloys. Bars for machining» (EN 12164:1998 «Copper and copper alloys — Rod for free machining purposes», NEQ)

5 by Order of the Federal Agency for technical regulation and Metrology from February 11, 2009 N 4-St inter-state standard GOST 31366−2008 introduced as a national standard of the Russian Federation from January 1, 2010

6 INTRODUCED FOR THE FIRST TIME


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. 1827-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 brass drawn bars with round, square and hexagonal cross-sections, supplied in straight segments, specifically designed 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 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

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 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 10198−91 wooden Boxes for goods of mass over 200 up to 20000 kg. General specifications

GOST 10929−76 Reagents. Hydrogen peroxide. Specifications

GOST 14192−96 Marking of cargo

GOST 15102−75 the universal metal closed Container of nominal gross mass 5,0 t Technical specifications

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 18242−72Statistical 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 20435−75 the universal metal closed Container of nominal gross mass 3,0 t specifications

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 standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard 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 form of a circle, square, regular polygons.

3.2 measuring length: the Product of a certain length, specified in the order.

3.3 times the length: the Period of integral multiple of the number of core length with an allowance for cutting and a tolerance on the overall length.

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

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

3.6 bullies: the Defect of the surface in the form of cavity with an uneven bottom and edges resulting from the sharp friction of individual sections of prefabricated about the details of rolling and finishing equipment.

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

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

3.9 bundle: the discontinuity of metal, oriented along the direction of deformation.

3.10 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, as well as as a result of negligent storage, packaging, transportation.

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

3.12 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.

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

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

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

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

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

3.18 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 of round bars and limit deviations of the diameter must match the values specified in table 1.


Table 1 — nominal diameter of round bars and limit deviations of the diameter

In millimeters

Nominal diameter	Limit deviation of nominal diameter with precision manufacturing
normal	high
3,0	0 -0,06	0 -0,04
SV. 3.0 to 6.0 incl.	0 -0,08	0 -0,05
SV. 6.0−10.0 incl.	0 -0,09	0 -0,06
SV. Of 10.0 to 18.0 incl.	0 -0,11	0 -0,07
SV. 18.0 to 30.0 incl.	0 -0,13	0 -0,08
SV. 30.0 to 50.0, incl.	0 -0,16	0 -0,10

4.2 nominal diameter, square and hex bars, i.e. the distance between parallel edges of the rod, and limit deviations of the diameter must match the values specified in table 2.


Table 2 — nominal diameter, square and hexagonal bars tolerances for diameter

In millimeters

Nominal diameter	Limit deviation of nominal diameter with precision manufacturing
normal	high
3,0	0 -0,12	0 -0,06
SV. 3.0 to 6.0 incl.	0 -0,12	0 -0,08
SV. 6.0−10.0 incl.	0 -0,15	0 -0,09
SV. Of 10.0 to 18.0 incl.	0 -0,18	0 -0,11
SV. 18.0 to 30.0 incl.	0 -0,21	0 -0,13
SV. 30.0 to 50.0, incl.	0 -0,25	0 -0,16
Notes 1 alloy of 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.

4.3 Diameters, cross-sectional area and theoretical weight of 1 m of round, square and hexagon bars given in Appendix A.

4.4 the length of the rods produce a random, dimensional and multiple lengths:

— random length:

from 1500 to 3000 mm, diameter 3 to 4 mm, inclusive;

from 2000 to 5000 mm in diameter over 4 to 40 mm, inclusive;

from 1000 to 4000 mm diameter over 40 up to 50 mm inclusive.

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 inclusive,

length less than 500 mm, for bars with diameter over 40 mm;

— measuring length within off-gage extreme deviations in length plus 15 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 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 the legend bars are placed according to the scheme:

Use the following abbreviations:

method of manufacture:	cold-deformed (drawn) — D,
sectional shape:	round — CU, square — SQUARE, hex — CG;
precision manufacturing:	normal — N, increased — P;
condition:	soft — M semi — P, hard — T, without specified mechanical properties — K;
length:	random — ND, dimensional — CD;
special conditions:	antimagnetic — AM soft state of high plasticity — L, semi-solid state of high plasticity, f, solid state of high plasticity. view angle: — without rounding — BS, — rounded — SK; type chamfer rod: — type a — beveled chamfer, — type B — sharp chamfer; regulated requirements for tensile test — P.

The sign «X» is placed in place of missing data, also indicate the length and special conditions.

Examples of symbols:

Rod, drawn, round, normal precision manufacturing, rigid, 12 mm in diameter and random length, from brass grade LS63−3:

Wire DKRNT 12 ND LS63−3, GOST 31366−2008

The same, round steel bars, square, normal precision manufacturing, rigid, with a diameter of 12 mm, a length of multiples of 1500 mm, made of brass stamps LS59−1, antimagnetic, high plasticity, with a rounded corner, beveled, chamfered, with specified requirements for the tensile test:

Rod DCUNT 12 KD 1500 LS59−1 AM in the UK type R And GOST 31366−2008

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 DCCT 10х2000 LS63−3, GOST 31366−2008

The same, round steel bars, round, normal accuracy of production, semi-solid, with a diameter of 10 mm, random length, brass brand LS58−2, high plasticity, with specified requirements for the tensile test:

Rod DCMP ND 10 LS58−2 f R GOST 31366−2008

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 Rods are made of brass brands: LS63−3, LS59−1V, LS59−1, LS58−2, LS58−3, LS59−2, LZHS58−1-1 according to GOST 15527 with the chemical composition shown in table 3.


Table 3 — Chemical composition of lead brass

Mark	Pre- Affairs	Mass fraction, %
Item
Si copper	Pb Swee- Heff	Fe same- the Uragan	Sn olo- in	Ni no- Kel	AI Alu- mi- tions	Si cream tions	Sb sur- mA	Bi vis- Mut	P Foz Fort	Zn zinc	Sum- mA Pro- sneeze ele — men- tov	The calculations supply return plot- ness, g/cm, near- tional
LS63−3	Min. Max.	62,0- 65,0	2,4- 3,0	- 0,1	- 0,10	- -	- -	- -	- 0,005	- 0,002	- 0,01	The rest -	- 0,25	8,5
LS59−1V	Min. Max.	57,0- 61,0	0,8- 1,9	- 0,5	- -	- -	- -	- -	- 0,01	- 0,003	- 0,02	The rest -	- 1,5	8,4
LS59−1	Min. Max.	57,0- 60,0	0,8- 1,9	- 0,5	- 0,3	- -	- -	- -	- 0,01	- 0,003	- 0,02	The rest -	- 0,75	8,4
LS58−2	Min. Max.	57,0- 60,0	1,0- 3,0	- 0,7	- 1,0	- 0,6	- 0,3	- 0,3	- 0,01	- -	- -	The rest -	- 0,3	8,4
LS58−3	Min. Max.	57,0- 59,0	2,5- 3,5	- 0,5	- 0,4	- 0,5	- 0,1	- -	- -	- -	- -	The rest -	- 0,2	Of 8.45
LS59−2	Min. Max.	57,0- 59,0	1,5- 2,5	- 0,4	- 0,3	- 0,4	- 0,1	- -	- -	- -	- -	The rest -	- 0,2	8,4
LZHS58−1-1	Min. Max.	56,0- 58,0	0,7- 1,3	0,7- 1,3	- -	- -	- -	- -	- 0,01	- 0,003	- 0,02	The rest -	- 0,5	8,4
Notes 1 In leaded brass is allowed the mass fraction of Nickel is not more than 0.5%, the brass stamps LS59−1, LS59−1 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. 2 brass stamps LS59−1, the sum of the elements of tin and silicon should be not more than 0.5%. 3 the brass of all brands it is possible to determine the mass fraction of tin, aluminum, manganese and silicon. 4 For non-magnetic alloys, the mass fraction of iron should not be more than 0.03%. 5 In brass brand LS58−2 mass fraction of antimony is allowed not more than 0.1%. 6 the Calculated density is specified to calculate the reference theoretical mass of products. 7 the Sign «-" means that this element is not standardized and is included in total other elements. 8 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. 9 Compliance designations brands of brass in this standard and EN 12164:1998 is given in Appendix B.

5.3 At customer’s request bars and rods, of alloy stamps LS59−1 and LS63−3 according to GOST 15527изготовляют with magnetic properties.

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

On the surface allowed 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.

5.6 Bars round, square and hexagonal cross-sections are produced with ends chopped off, cut end Squareness, mm is not regulated. Bars of round, square and hexagonal cross-sections with diameters from 3,0 mm to 30 mm inclusive manufactured with a chamfer on one end of the rod. The bars are made with beveled chamfers — type a or with a pointed chamfer — type B in accordance with figure 1.

Figure 1 — Types of chamfers bars

Type A 0,850,95
Type B 0,60,8

 — nominal diameter of the rod;

 — the nominal diameter of the end chamfer

Figure 1 — Types of chamfers bars

At bars in round, square and hexagonal cross-sections with a diameter of over 30 mm the type of bevel is determined by agreement between the consumer and the manufacturer.

By agreement between the consumer and the manufacturer is allowed:

— the production of rods with chamfer on both ends;

— the production of rods with cut end. Thus the cosine of the cut is determined by agreement with the consumer;

— production of bars with other types of bevels.

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

5.8 Longitudinal edges of bars of square and hexagonal cross-sections may have corners rounded along the entire length. The allowable radii of the corners of bars of square and hexagonal cross-sections are given in table 4.


Table 4 — Allowable radii of the corners of bars of square and hexagonal cross-sections

In millimeters

The nominal diameter or distance between parallel faces of the rod	Permissible radius of corners
without rounding, max	loopy
3,0	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.

5.9 bars Have a semi-solid state of the alloys of all grades should be removed residual tensile stresses thermal (low temperature annealing) or a mechanical method.

5.10 the Maximum twisting square and hexagonal bars in semi-solid and solid States should not exceed the values given in table 5.


Table 5 — Maximum twisting square and hexagonal bars

In millimeters

The nominal diameter or distance between parallel faces of the rod	The maximum allowable torsion on any 1 m length of the rod
From 10.0 to 18.0 incl.	1,0
SV. 18.0 to 30.0 incl.	2,0
SV. 30.0 to 50.0, incl.	3,0

Twisting the tolerance on the overall length of rod should not exceed the twisting on 1 m total length of rod in meters.

Torsion for bars with diameter up to 10 mm inclusive in the semisolid and solid States is determined by agreement between the consumer and the manufacturer.

The twist is not regulated for bars in soft and semi-hard state of high ductility.

5.11 the Bars must be straightened. The maximum curvature of the rods 1 m length should not exceed the values given in table 6.


Table 6 — Maximum curvature of bars

The nominal diameter or distance between parallel faces of a bar, mm	The condition of the material	Sectional shape	The maximum curvature of the rod 1 m length of bar, mm
From 10 to 18 incl.	Semi-solid and solid	Round	1,25
SV. 18 to 50 incl.	Semi-solid	Round	Of 1.00
From 10 to 18 incl.	Semi-solid and solid	Square and hex	1,25
SV. 18 to 50 incl.	Semi-solid	Square and hex	1,50

The overall curvature of the rod should not exceed the tolerance values of curvature of 1 m for the total length of the rod in meters.

Curvature for bars with diameter up to 10 mm inclusive in the semisolid and solid States is determined by agreement between the consumer and the manufacturer.

The curvature is not set bars in a soft condition.

5.12 Mechanical properties of bars shall conform to the requirements specified in table 7.


Table 7 — Mechanical properties of bars

Brand of brass	The condition of the material	View test- cal*	The nominal diameter or distance between parallel faces mm	Temporary resistance, MPa (kgf/mm), not less than	Elongation after rupture, %, not less		Brinell hardness number or Vickers, about siteline
LS63−3	Without specified mechanical properties	To	From 3 to 20 incl.	Without specified mechanical properties
Semi-solid	R	From 10 to 20 incl.	350 (36)	-	Twelve	95
Solid	R	From 3 to 9.5 incl.	590 (60)	-	-	155
Solid	R	10 to 14 incl.	540 (55)	-	-	143
Solid	R	15 to 20 incl.	490 (50)	-	-	130
LS59−1, LS59−1V, LS58−2, LS58−3, LS59−2	Without specified mechanical properties	To	From 3 to 50 incl.	Without specified mechanical properties
Soft	R	From 3 to 50 incl.	330 (34)	25	22	80
Semi-solid	R	From 3 to 30 incl.	410 (42)	10	8	120
Semi-solid	R	From 13 to 20 incl.	390 (40)	15	12	120
Semi-solid	R	From 21 to 40 incl.	390 (40)	18	15	120
Solid	R	From 3 to 30 incl.	490 (50)	7	5	150
LZHS58−1-1	Without specified mechanical properties	To	From 3 to 50 incl.	Without specified mechanical properties
Semi-solid	R	From 3 to 50 incl.	440 (45)	-	10	130
* Type of tests: — R — the tensile test , or ; — Without specified mechanical properties. Notes 1 elongation determined on a short or long samples at the manufacturer’s discretion, unless otherwise stipulated in the order. 2 hardness Data are not mandatory requirements of this standard, they are for reference. 3 the Sign «-" means that the test is not conducted.

(Changed edition, Rev. N 1).

5.13 On agreement between the consumer and the manufacturer allowed the production of rods of high plasticity with the following standards mechanical properties, as shown in table 8.


Table 8 — Mechanical properties of rods of high plasticity

Brand of brass	The condition of the material	View test- cal*	The nominal diameter or distance between parallel faces mm	Temporary resistance Pressure, MPa (kgf/mm), not less than	Elongation after break, %, not less than
LS59−1	Without specified mechanical properties	To	From 3 to 50 incl.	Without specified mechanical properties
Soft	R	From 3 to 50 incl.	330 (34)	32	30
Semi-solid	R	From 3 to 12 incl.	410 (42)	14	12
Semi-solid	R	From 13 to 20 incl.	390 (40)	16	14
Semi-solid	R	From 21 to 40 incl.	390 (40)	20	17
Solid	R	From 3 to 12 incl.	490 (50)	12	9
* Type of tests: — R — the tensile test , or ; — Without specified mechanical properties. Note — the elongation determined on a short or long samples at the manufacturer’s discretion, unless otherwise stipulated in the order.

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 and one material condition, one is 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% rods or beams of the party.

6.3 For quality control surface bars from the party bars are selected «blindly» (by the greatest objectivity) according to GOST 18321. The control plans comply with GOST 18242. Number of control rods is determined by the table 9.


Table 9 — Number of control rods

In pieces

The number of bars in the party	Number of control rods	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 that do not meet the requirements of 5.4, less than the acceptance number given in table 9. In the case when the rejection number is equal to or more shown in table 9, the batch is rejected.

Allowed the manufacturer, upon receipt of unsatisfactory results, to control every rod.

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 To check the internal defects of bars take two rods, or two bunches from 3000 kg or less.

6.7 To check the mechanical properties and the presence of residual tensile stresses taken two rods or two bunches of 3000 kg or less.

Under the control of the mechanical properties determined tensile strength and elongation.

6.8 To verify the chemical composition of the selected two rods, or two bunches from 3000 kg or less. Allowed the manufacturer checks the chemical composition carried out on the sample taken from the molten metal.

6.9 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 carried on each rod selected for 6.2.

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. The diameter control of bars is carried out at a minimum distance of 50 mm from the end of bars. The measurement of the diameter of square and hexagonal bars is carried out in the center of the faces.

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

The corner radii of square bars 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 Inspection of bars for 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.

On the manufacturer tested for the presence of internal defects is carried out on the extruded blank by fracture or non-destructive inspection method according to the method of the manufacturer.

7.6 To test the 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.

7.7 Test bars tensile (determination of strength and elongation after fracture) performed on samples taken from each selected batch of rod or beam. From each selected rod or beam selected for one sample.

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.

7.8 To check the chemical composition of the selected one sample from each selected 6.8 rod 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.

7.9 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 according to the method given in Appendix b, or the ammonia method, given 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.

7.10 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, while the number controlled by the rods is determined by the table 9.

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

7.12 the differences 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 must be attached to metal, plywood or plastic 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 should 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 10.


Table 10 — legend brands of alloy

Grade	Marking
LS59−1	M
LS59−1 antimagnetic	MA
LS59−1V	MB
LS63−3	L63−3
LS63−3 antimagnetic	L63−3A
LZHS58−1-1	Lzhs
LS58−2	Л58−2
LS58−3	Л58−3
LS59−2	Л59−2

(Changed edition, Rev. N 1).

8.2 Bars up to ø 16 mm inclusive are Packed in wooden boxes of types I, II-1, III-1 according to GOST 2991, GOST 10198. Dimensions of boxes — GOST 21140. Allowed the packaging to returnable metal containers according to GOST 15102, GOST 20435.

By agreement between the consumer and the manufacturer allowed bars up to ø 16 mm inclusive packaging in synthetic or non-woven materials without packing in boxes.

8.3 Bars with a diameter of over 16 mm tied into bundles weighing not more than 1000 kg each.

At the request of the consumer allowed the linkage of bars in bundles weighing up to 1500 kg or 80 kg.

Each bundle should consist of at least three rods. Each bundle should be tied with polyester ribbon according to the normative document or a steel tape according to GOST 3560 size not less than 0,8х25 mm or steel wire in two turns with a diameter of 1.2 mm according to GOST 3282 in at least three places to prevent mutual displacement of bars in the beam. The ends of the wire connected by twisting at least five turns. Under some umbilical tape or wire should be laid a strip of cardboard or a wrapping tissue.

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

Overall dimensions and weight of packages — according to GOST 24597.

Means bonding in the transport packets 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 70 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 polyester tape according to the normative document, or a steel tape according to GOST 3560 size not less than 0,5 x 20 mm, 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 a further batch number.

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 round, square and hex bars

Appendix A
(reference)

Table A. 1

The nominal diameter or distance between parallel faces of a bar, mm	The cross-sectional area of bars, mm			Theoretical mass 1 m 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
Note — When calculating the theoretical mass density of brass is taken equal to 8.5 g/cm.

Annex B (reference). Compliance designations brands of brass in this standard and EN 12164:1998

Appendix B
(reference)

Table B. 1

Under this standard	According to EN 12164:1998
LS63−3	There is no equivalent
LS59−1V	There is no equivalent
LS59−1	There is no equivalent
LS58−2	There is no equivalent
LS58−3	CuZn39Pb3
LS59−2	CuZn40Pb2
LZHS58−1-1	There is no equivalent

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

The App
(recommended)

The present Annex 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 cm, diluted 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 Evaluation 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 in case of doubt regarding the cracks mercury with the surface of the sample should be removed by heating in a furnace.

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 and materials

Laboratory scales according to GOST 24104, or others providing a weighing error of ±0.1 g.

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

Desiccator, according to GOST 25336.

Beaker measuring, volumetric flasks with a capacity of 1 DMaccording to GOST 1770.

Ammonium chloride according to GOST 3773.

Distilled water according to GOST 6709.

Sodium hydroxide according to GOST 4328, 30% solution.

Sulfuric acid according to GOST 4204, 5% solution.

Hydrogen peroxide according to GOST 10929, 30% solution.

The aviation gasoline according to GOST 1012 or rectified ethyl alcohol technical 18300 churchyard.

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. Once again check the pH value of 9.4 and 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 testing must comply with the rules work in the chemical laboratory.



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