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  • ASTM
    B250/B250M-13 Standard Specification for General Requirements for Wrought Copper Alloy Wire
    Edition: 2013
    $103.58
    Unlimited Users per year

Description of ASTM-B250 2013

ASTM B250 / B250M - 13

Standard Specification for General Requirements for Wrought Copper Alloy Wire

Active Standard ASTM B250 / B250M | Developed by Subcommittee: B05.02

Book of Standards Volume: 02.01




ASTM B250 / B250M

Abstract

This specification establishes the general requirements common to wrought copper and copper alloy wires. The materials for manufacture shall be a cast bar, billet, rod, or other form of such purity and soundness as to be suitable for processing by hot working, cold working, and subsequent annealing to produce finished products that meet the specified temper properties and have a uniform wrought structure. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (diameter, thickness, specific and stock lengths, width, straightness, and edge contour), mechanical (tensile, yield and bend strengths, elongation, and Rockwell hardness), electrical (resistivity and conductivity), chemical composition, and grain size requirements. In the event of conflict between this specification and the individual casting product specifications, the requirements of the casting specification shall take precedence.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Significance and Use

12.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29 .

Property

Rounded Unit for Observed
or Calculated Value

Dimensions
Chemical composition
Hardness
Electrical resistivity/conductivity

nearest unit in the last
right-hand significant
digit used in expressing
the limiting value

Tensile strength
Yield strength

nearest ksi [5 MPa]

Elongation

Below 5?%

nearest multiple of 0.5?%

5?% and over

nearest 1?%

Grain size

Under 0.060 mm

nearest multiple of 0.005 mm

0.060 mm and over

nearest 0.01 mm


1. Scope

1.1 This specification establishes requirements common to wrought copper and copper alloy wire and shall apply to Specifications B16/B16M , B99/B99M , B134/B134M , B159/B159M , B197/B197M , B206/B206M , B272 , B301/B301M , B453/B453M , B967/B967M , and B974/B974M to the extent referenced therein.

1.2 The chemical composition, physical and mechanical properties, and all other requirements not included in this specification shall be prescribed in the product specification.

1.3 Units Values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.4 The following safety hazard caveat pertains only to the test methods described in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines

B99/B99M Specification for Copper-Silicon Alloy Wire for General Applications

B134/B134M Specification for Brass Wire

B159/B159M Specification for Phosphor Bronze Wire

B193 Test Method for Resistivity of Electrical Conductor Materials

B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar

B197/B197M Specification for Copper-Beryllium Alloy Wire

B206/B206M Specification for Copper-Nickel-Zinc (Nickel Silver) Wire and Copper-Nickel Alloy Wire

B272 Specification for Copper Flat Products with Finished (Rolled or Drawn) Edges (Flat Wire and Strip)

B301/B301M Specification for Free-Cutting Copper Rod, Bar, Wire, and Shapes

B453/B453M Specification for Copper-Zinc-Lead Alloy (Leaded-Brass) Rod, Bar, and Shapes

B846 Terminology for Copper and Copper Alloys

B900 Practice for Packaging of Copper and Copper Alloy Mill Products for U.S. Government Agencies

B967/B967M Specification for Copper-Zinc-Tin-Bismuth Alloy Rod, Bar and Wire

B974/B974M Specification for Free-Cutting Bismuth Brass Rod, Bar and Wire

E3 Guide for Preparation of Metallographic Specimens

E8/E8M Test Methods for Tension Testing of Metallic Materials

E18 Test Methods for Rockwell Hardness of Metallic Materials

E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes

E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)

E75 Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys

E112 Test Methods for Determining Average Grain Size

E118 Test Methods for Chemical Analysis of Copper-Chromium Alloys

E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys

E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition

E478 Test Methods for Chemical Analysis of Copper Alloys

E581 Test Methods for Chemical Analysis of Manganese-Copper Alloys


Keywords

copper-alloy wires; wires; wrought copper-alloy wires; flat wires;


ICS Code

ICS Number Code 77.150.30 (Copper products)


DOI: 10.1520/B0250_B0250M-13

ASTM International is a member of CrossRef.

ASTM B250 / B250M

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