GOST 5221-2008

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  ГОСТ 5221-2008

GOST 5221−2008 Wire, tin-zinc bronze. Technical specifications (with Amendment)

GOST 5221−2008

Group В74

INTERSTATE STANDARD

WIRE, TIN-ZINC BRONZE

Specifications

Tin-zinc bronze wire. Specifications

ISS 77.150.30
GST 18 4690

Date of introduction 2009−07−01

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 Interstate technical Committee for standardization MTK 106 «Tsvetmetprokat», Scientific-research, project and design Institute for alloys and processing of nonferrous metals «joint-stock company «Institute tsvetmetobrabotka"

2 as AMENDED by the Federal Agency for technical regulation and Metrology

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 33 dated 6 June 2008)

The standard was accepted by voting:

4 by Order of the Federal Agency for technical regulation and Metrology dated August 19, 2008 N 181-St interstate standard GOST 5221−2008 introduced as a national standard of the Russian Federation from July 1, 2009

5 REPLACE GOST 5221−77


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»


AMENDED, published in IMS No. 5, 2009

An amendment made by the manufacturer of the database

1 Scope

This standard applies to the round wire and square cross-sections of the tin-zinc bronze brand Broc4−3 for the manufacture of elastic elements and other parts in electrical and mechanical engineering.

2 Normative references

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

GOST 1579−93 (ISO 7801−84) Wire. Test method for bend

GOST 1953.1−79 Bronze tin. Methods for determination of copper

GOST 1953.2−79 Bronze tin. Methods for determination of lead

GOST 1953.3−79 Bronze tin. Methods for determination of tin

GOST 1953.4−79 Bronze tin. Methods for determination of phosphorus

GOST 1953.5−79 Bronze tin. Methods for determination of Nickel

GOST 1953.6−79 Bronze tin. Methods for determination of zinc

GOST 1953.7−79 Bronze tin. Methods of iron determination

GOST 1953.8−79 Bronze tin. Methods for determination of aluminium

GOST 1953.9−79 Bronze tin. Methods for determination of silicon

GOST 1953.10−79 Bronze tin. Methods for determination of antimony

GOST 1953.11−79 Bronze tin. Methods for determination of bismuth

GOST 1953.12−79 Bronze tin. Methods of determining sulphur

GOST 1953.13−79 Bronze tin. Method of determination of manganese

GOST 1953.14−79 Bronze tin. Method for determination of magnesium

GOST 1953.15−79 Bronze tin. Methods for determination of arsenic

GOST 1953.16−79 Bronze tin. Method of determining titanium

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 4381−87 Micrometers lever. General specifications

GOST 5017−2006 Bronze tin pressure treated. Brand

GOST 6507−90 Micrometers. Specifications

GOST 8273−75 wrapping Paper. Specifications

GOST 8828−89 base Paper and paper double-layer waterproof packaging. Specifications

GOST 9078−84 flat Pallets. General specifications

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

GOST 9569−2006 waxed Paper. Specifications

GOST 10446−80 (ISO 6892−84) Wire. Test method tensile

GOST 10447−93 Wire. Method of test for winding

GOST 14192−96 Marking of cargo

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 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 22225−76 universal Containers with a gross weight 0,625 and 1,25 t. specifications

GOST 24047−80 Semi-finished products from nonferrous metals and their alloys. Sampling for tensile 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 25086−87 non-ferrous metals and their alloys. General requirements for methods of analysis

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

GOST 30608−98 of Bronze tin. XRF technology

ST SEV 543−77 Number. Record rules and rounding

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.

3 Terms and definitions

This standard applies the following terms with respective definitions:

3.1 wire: Prefabricated with a cross section of constant size, rolled into the Bay or wound into a coil, manufactured by rolling, pressing or drawing.

3.2 ovality (deviation from circular shape): Difference between the largest and smallest values of the diameters measured at one cross section perpendicular to the axis of the wire.

3.3 Bay: Cut product wound into a series of continuous turns right separatornyi rows, without sharp bends.

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

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

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

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

3.8 risk: a Longitudinal indentations or protrusions on the surface of products of different length in the warp direction.

3.9 nick: Local deepen with sharp edges.

4 Assortment

4.1 the diameter of the wire of circular cross section and tolerances for diameter shall be as specified in table 1.


Table 1

In millimeters

4.2 the Diameter of a wire of square cross section and tolerances for diameter shall be as specified in table 2.


Table 2

In millimeters

4.3 Ovality of wire of circular cross section should not exceed half of the maximum deviations in diameter.

4.4 Wire is supplied in coils or on reels.

The legend of wire are placed according to the scheme:

Use the following abbreviations:

Instead of the missing data is «X».

Examples of symbols:

Wire cold-drawn, round section, the normal precision manufacturing, rigid, with a diameter of 1.20 mm, in coils, for elastic elements:

Wire DKRNT of 1.20 CT Broc4−3 UE GOST 5221−2008

Wire cold-drawn, square-section, solid, with a diameter of 0.80 mm, in coils:

Wire DKUHD 0,80 BT Broc4−3 GOST 5221−2008

5 Technical requirements

5.1 Wire produced in accordance with the requirements of this standard in bronze brand Broc4−3 according to GOST 5017 with the chemical composition shown in table 3.


Table 3

5.2 Wire produced in the solid state.

5.3 the Surface of wire should be clean, free from contamination, hindering its inspection.

On the surface of the wire allowed slight traces of the technological lubricant, and also shell, risks, dents, traces of pulling, nicks and other surface defects not present in the control wire Stripping for limit deviation for diameter.

Allowed the quality of the wire surface control samples are agreed between manufacturer and user.

5.4 Mechanical properties of wire of circular section shall be as specified in table 4.


Table 4

5.5 By agreement between manufacturer and consumer wire round, not designed for elastic elements, manufactured with the mechanical properties specified in table 5.


Table 5

5.6 Mechanical properties of wire of square section shall be as specified in table 6.


Table 6

5.7 the Wire shall withstand the bend test without failure at least three bends.

5.8 Fracture of the wire should be uniform, without foreign inclusions, delaminations, voids and other defects.

5.9 At the customer’s request wire intended for the manufacture of elastic elements, must withstand the test winding.

Wire of circular cross section to withstand a winding of ten turns on a cylindrical rod with a diameter equal to twice the wire diameter, but not less than 1 mm. the Wire shall withstand a winding of ten turns on a cylindrical rod with a diameter equal to triple the diameter of the wire. When winding the wire does not have to give cracks, delamination, tears and fractures.

5.10 mass of the wire in the Bay or on the reel indicated in Annex V.

6 acceptance Rules

6.1 Wire take parties. The party should consist of wire of the same diameter, the same cross-sectional shape, the same precision workmanship and 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;

— designation of wire;

— test results (as required);

— the batch number;

the weight of the party.

The weight of the batch shall be not more than 1000 kg.

6.2 To check the chemical composition of select two bays or two coils from the party.

Allowed to the manufacturer of the sampling carried out by the molten metal.

6.3 For the control of dimensions and surface quality applying a single-stage normal sampling plan for the alternative characteristic in accordance with GOST 18242 with the acceptance level of defects AQL=2,5%.

The selection of bays or coils in the sample is carried out «blindly» (by the greatest objectivity) according to GOST 18321.

If the quantity does not exceed three bays or three coils, checked every Bay or a coil.

6.4 For the control of dimensions and surface quality of the party selected bays or coils in accordance with table 7.


Table 7

In pieces

Party is considered valid if the number of bays or coils that do not meet the requirements of 5.3 and tables 1, 2, less than the acceptance number specified in table 7.

If unsatisfactory results are total control of the entire party.

The manufacturer is allowed control of size and surface quality to carry out the production process.

6.5 To control the mechanical properties and fracture and test the inflection and winding selected three bays or three coils of wire of the party.

Fracture control on the wire diameter not less than 2.00 mm.

The test bend is carried out at a wire diameter of 0.60 to 6.00 mm, inclusive.

6.6 If unsatisfactory test results of at least one of the performance indicators specified in 6.2, 6.5, according to him, a second 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 Control of dimensions and surface quality is carried out with a given probability of 97.5% (the acceptance level of defects AQL=2,5%).

7.2 the Quality of the wire surface check inspection without the use of magnifying devices.

7.3 the wire Diameter is measured on each selected Bay or the coil micrometers 4381 according to GOST and GOST 6507 or other devices that provide the necessary measurement accuracy.

The measurement of the diameter of the wire is carried out in two mutually perpendicular directions of the same section in the beginning, the end and in the middle of the Bay or the coil. In diameter taking the average value of one or more pairs of measurements taken at a right angle at one cross section.

If there is disagreement in the definition of diameter is measured by micrometer according to GOST 4381, GOST 6507.

7.4 To control the mechanical properties, fracture, testing inflection and winding from each selected Bay or coils selected based on one sample.

Allowed for monitoring of the fracture to use the sample selected for mechanical testing.

7.5 Test wire tensile (tensile strength and elongation after fracture) is carried out according to GOST 10446 on samples with an estimated length of 100 mm. Sampling is carried out according to GOST 24047.

7.6 control of fracture wire is incised to a depth of not more than one third of its diameter and break off at the notches. Inspection of the fracture is carried out without the use of magnifying devices.

7.7 Test wire on the bend is carried out according to GOST 1579.

7.8 Test wire on the winding is carried out according to GOST 10447.

7.9 For the analysis of the chemical composition of each selected Bay or the coil cut on the same model. Sampling for chemical composition analysis is carried out according to GOST 24231.

Chemical composition analysis is carried out according to GOST 1953.1 — 1953.16 GOST, GOST 25086 host 30608.

Allowed to the manufacturer of the sampling carried out by the molten metal.

Allowed to carry out chemical analysis by other methods of equal precision specified. If there is disagreement in the assessment of the chemical composition analysis is carried out according to GOST 1953.1 — 1953.16 GOST and GOST 25086.

7.10 the results of the measurements are rounded according to the rounding rules established ST SEV 543.

8 Packing, marking, transportation and storage

8.1 the Wire shall be wound in coils or on spools correct separatornyi rows, without sharp bends. The distance between the upper row of the wire and the edge of the cheeks of the coil should be at least 3 mm.

The wire ends should be firmly fixed, thus should be provided free finding external end and the free unwinding of the wire.

Each coil or reel shall consist of one piece of wire without splices and knots.

8.2 Wire of circular cross section with a diameter less than 0.50 mm is wound on a plastic coil with a diameter of 0.50 mm or more — in the Bay.

The square section wire wound into a coil.

8.3 Each Bay needs to be tied up with a wire diameter of not less than 1.0 mm the churchyard 3282 or synthetic tape technical documents in two places symmetrically, with the twisted ends of the wire at least three turns.

Mass Bay should be no more than 80 kg.

8.4 For each Bay should be attached label and on each reel shall be pasted label stating:

— trademark or name and trademark of manufacturer;

— the name of the country of manufacturer;

— the legend of the wire;

— batch number;

— stamp of technical control.

8.5 Bay or the coil wire diameter 0.80 mm and less shall be Packed in wooden boxes of types I, II-1, II-2, III-1 and III-2 according to GOST 2991 lined with paper according to GOST 8828, GOST 8273. Dimensions of boxes — GOST 21140.

Bay wire diameter over 0.80 mm should be wrapped in nonwoven or synthetic material for technical papers and tied with wires of diameter not less than 1.0 mm according to GOST 3282 in two places symmetrically around the circumference of the Bay. The outer diameter of the Bay must not exceed 1900 mm.

8.6 Consolidation packages in overpacks carried out in accordance with the requirements of GOST 26663. Means bonding in the transport packets according to GOST 21650. Dimensions of packages — according to GOST 24597.

Packaging is carried out on pallets according to GOST 9557 or GOST 9078 or without pallets with the use of bars with a height of not less than 50 mm with strapping in the longitudinal and transverse directions with wire of diameter not less than 3.0 mm according to GOST 3282 or tape not less than 0,3x16 mm according to GOST 3560. Binding: wire — stranding at least five turns of tape to the castle.

Weight of cargo must not exceed 1250 kg.

8.7 Bay wire diameter 0.80 mm and less can be transported in universal containers according to GOST 20435 or GOST 22225 without packaging in boxes. Each coil of wire must be wrapped with moisture-proof paper according to GOST 8828 or GOST 9569.

Bay wire diameter over 0.80 mm are allowed to be transported in universal containers according to GOST 20435 or GOST 22225 without packaging in packaging materials.

When transporting containers in the bays of the wire needs to be laid and strengthened in such a way as to prevent their movement in the container. In addition, the Bay must be protected from corrosion, contamination and mechanical damage.

8.8 allowed to use other types of packaging materials not inferior in strength of the above, and other types and methods of packing, providing safety of quality of the wire.

8.9 In each box or container must be attached to the packing slip, containing:

is the trademark or name and trademark of manufacturer;

— the name of the country of manufacture;

— designation of wire;

— the batch number;

— the net weight;

— gross mass;

— the number of the packer.

8.10 Transport marking under GOST 14192 with the application of manipulation sign «Protect from moisture».

8.11 Packaging of wire that is sent to the far North regions and equated areas according to GOST 15846 in the group «Metals and metal products."

8.12 Wire transporterowych all types of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this species.

8.13 Wire should be stored in covered premises. When storing and transporting the wire should be protected from mechanical damage, moisture and active chemical substances.

The consumer wire should be kept in stock in the manufacturer’s packaging for at least two days to equalize the temperature of the wire to the room temperature. After this period, the wire needs to be unpacked.

9 manufacturer’s Warranty

9.1 the Manufacturer guarantees compliance wire requirements of this standard if the consumer of rules of transportation and storage.

9.2 the Warranty period of storage of wire — 6 months from date of manufacture.

9.3 after the warranty period of storage of wire before use must be checked for compliance with the requirements of this standard and compliance can be used by the user to the destination.

Annex a (informative). Diameters, cross-sectional area and theoretical weight of 1000 m of the wire used round section

Appendix A
(reference)

Table A. 1

Annex B (reference). Diameters, cross-sectional area and theoretical weight of 1000 m of the wire used square section

Appendix B
(reference)

Table B. 1

Annex b (mandatory). The mass of the wire in the Bay or on the coil

The App
(required)

Table B. 1

The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
M.: STANDARTINFORM, 2008