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ASTM B3-13(2024)

(Specification)

Standard Specification for Soft or Annealed Copper Wire

Standard Specification for Soft or Annealed Copper Wire

ABSTRACT
This specification covers drawn and annealed or soft round bare copper wire for electrical purposes. The matterial shall be copper of such quality and purity that the finished product shall have the properties and characteristics prescribed. Tensile strength, elongation, and resistivity of the wires shall be determined. A micrometer caliper equipped with a vernier shall be used to measure the material dimensions. The wires shall be subjected to surface finish and shall conform to the particularized requirements.
SCOPE
1.1 This specification covers drawn and annealed or soft round bare copper wire for electrical purposes (see Explanatory Note 1).  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.2.1 Exception—For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Mar-2024
ICS
77.150.30 - Copper products
Technical Committee
B01 - Electrical Conductors
Drafting Committee
B01.04 - Conductors of Copper and Copper Alloys
Current Stage
Ref Project

Relations

Replaces
ASTM B3-13(2018) - Standard Specification for Soft or Annealed Copper Wire
Effective Date
01-Apr-2024
Referred By
ASTM B902/B902M-13(2018) - Standard Specification for Compressed Round Stranded Copper Conductors, Hard, Medium-Hard, or Soft Using Single Input Wire Construction
Effective Date
01-Apr-2024
Referred By
ASTM B172-17 - Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members, for Electrical Conductors
Effective Date
01-Apr-2024
Referred By
ASTM B8-23 - Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft
Effective Date
01-Apr-2024
Referred By
ASTM B972-10(2020)e1 - Standard Specification for Nickel-Coated Braid and Ribbon Flat Copper Wire Intended for use in Electronic Application
Effective Date
01-Apr-2024
Referred By
ASTM B174-17 - Standard Specification for Bunch-Stranded Copper Conductors for Electrical Conductors
Effective Date
01-Apr-2024
Referred By
ASTM B787/B787M-04(2020) - Standard Specification for 19 Wire Combination Unilay-Stranded Copper Conductors for Subsequent Insulation
Effective Date
01-Apr-2024
Referred By
ASTM F68-16 - Standard Specification for Oxygen-Free Copper in Wrought Forms for Electron Devices
Effective Date
01-Apr-2024
Referred By
ASTM B258-18 - Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors
Effective Date
01-Apr-2024
Referred By
ASTM B971-10(2020)e1 - Standard Specification for Silver-Coated Braid and Ribbon Flat Copper Wire intended for use in Electronic Application
Effective Date
01-Apr-2024
Referred By
ASTM B77-07(2018) - Standard Test Method for Thermoelectric Power of Electrical-Resistance Alloys
Effective Date
01-Apr-2024
Referred By
ASTM D1676-17 - Standard Test Methods for Film-Insulated Magnet Wire
Effective Date
01-Apr-2024
Referred By
ASTM B496-16(2021) - Standard Specification for Compact Round Concentric-Lay-Stranded Copper Conductors
Effective Date
01-Apr-2024
Referred By
ASTM B173-17 - Standard Specification for Rope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members, for Electrical Conductors
Effective Date
01-Apr-2024
Referred By
ASTM B973-10(2020)e1 - Standard Specification for Tin-Coated Braid and Ribbon Flat Copper Wire intended for use in Electronic Application
Effective Date
01-Apr-2024

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ASTM B3-13(2024) - Standard Specification for Soft or Annealed Copper WireASTM B3-13(2024) - Standard Specification for Soft or Annealed Copper Wire
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ASTM B3-13(2024) - Standard Specification for Soft or Annealed Copper Wire
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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: B3 − 13 (Reapproved 2024)
Standard Specification for
1
Soft or Annealed Copper Wire
This standard is issued under the fixed designation B3; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Wires Used as Electrical Conductors
2.3 Other Standards:
1.1 This specification covers drawn and annealed or soft
3
NBS Handbook 100 —Copper Wire Tables
round bare copper wire for electrical purposes (see Explanatory
Note 1).
3. Ordering Information
1.2 The values stated in inch-pound units are to be regarded
3.1 Orders for material under this specification shall include
as standard. The values given in parentheses are mathematical
the following information:
conversions to SI units that are provided for information only
3.1.1 Quantity of each size,
and are not considered standard.
3.1.2 Wire size: diameter in inches (see 5.3 and Table 1),
1.2.1 Exception—For density, resistivity and temperature,
3.1.3 Type of copper, if special (Section 4),
the values stated in SI units are to be regarded as standard.
3.1.4 Package size (see 10.1),
1.3 This standard does not purport to address all of the
3.1.5 Special package marking, if required, and
safety concerns, if any, associated with its use. It is the
3.1.6 Place of inspection (see 7.1).
responsibility of the user of this standard to establish appro-
4. Materials
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4.1 The material shall be copper of such quality and purity
1.4 This international standard was developed in accor-
that the finished product shall have the properties and charac-
dance with internationally recognized principles on standard-
teristics prescribed in this specification.
ization established in the Decision on Principles for the
NOTE 1—Specification B49 defines copper suitable for use.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 4.2 Copper bars of special qualities, forms, or types, as may
Barriers to Trade (TBT) Committee. be agreed upon between the manufacturer and the purchaser,
and which will conform to the requirements prescribed in this
2. Referenced Documents
specification may also be used.
2.1 The following documents of the issue in effect at the
5. General Requirements (see Section 8)
time of reference form a part of this specification to the extent
referenced herein: 5.1 Tensile Strength and Elongation—The wire shall con-
2 form to the requirements for elongation prescribed in Table 1
2.2 ASTM Standards:
(see Explanatory Note 2). No requirements for tensile strength
B49 Specification for Copper Rod for Electrical Purposes
are specified. For wire whose nominal diameter is more than
B193 Test Method for Resistivity of Electrical Conductor
0.001 in. (0.025 mm) greater than a size listed in Table 1, but
Materials
less than that of the next larger size, the requirements of the
B258 Specification for Standard Nominal Diameters and
next larger size shall apply.
Cross-Sectional Areas of AWG Sizes of Solid Round
5.2 Resistivity—The electrical resistivity at 20 °C shall not
2 2
exceed 875.20 Ω·lb/mile (0.15328 Ω·g/m ) (see Explanatory
1
This specification is under the jurisdiction of ASTM Committee B01 on
Note 5).
Electrical Conductorsand is the direct responsibility of Subcommittee B01.04 on
Conductors of Copper and Copper Alloys.
5.3 Dimensions and Permissible Variations—The wire sizes
Current edition approved April 1, 2024. Published May 2024. Originally
shall be expressed as the diameter of the wire in decimal
approved in 1912. Last previous edition approved in 2018 as B3 – 13 (2018). DOI:
fractions of an inch to the nearest 0.0001 in. (or 0.001 mm) (see
10.1520/B0003-13R24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from National Institute of Standards and Technology (NIST), 100
the ASTM website. Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B3 − 13 (2024)
TAB
...

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ABSTRACT
This specification covers medium-hard-drawn round copper wire for electrical purposes. The material shall be copper of such quality and purity that the finished product shall have the properties and characteristics prescribed. Tensile test and electrical resistivity test shall be made to conform to the requirements specified.
SCOPE
1.1 This specification covers medium-hard-drawn round copper wire for electrical purposes (see Explanatory Note 1).  
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This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment. The silver-coated wires are classified according to the total weight of the coated wires, namely; Class A, B, C, D, and E. Tensile strength test, resistivity test, weight of coating, and dimensional measurements shall be performed to conform to the requirements specified.
SCOPE
1.1 This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment, as follows:  
1.1.1 Class A—Wire whose silver coating is at least 1.25 % of the total weight of the coated wire.  
1.1.2 Class B—Wire whose silver coating is at least 2.50 % of the total weight of the coated wire.  
1.1.3 Class C—Wire whose silver coating is at least 4.00 % of the total weight of the coated wire.  
1.1.4 Class D—Wire whose silver coating is at least 6.10 % of the total weight of the coated wire.  
1.1.5 Class E—Wire whose silver coating is at least 10.00 % of the total weight of the coated wire.  
1.2 Silver-coated wire having different minimum percentages of silver by weight may be obtained by mutual agreement between the manufacturer and the purchaser. For information purposes the thickness of coating in microinches provided by the percentages listed above is shown in Table 1 (Explanatory Note 1).  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3.1 Exceptions—The SI values for density, resistivity, and volume are to be regarded as standard.  
1.4 The following precautionary caveat pertains only to the test method section of 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 determine the applicability of regulatory limitations prior to use. For specific precautionary statements see 8.4.1.2 and Explanatory Note 2.  
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ASTM B355-11(2016)(Specification)
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ABSTRACT
This specification covers nickel-coated, soft or annealed, round copper wire for use in electrical equipment. Five classes of wire are covered as follows: Class 2, Class 4, Class 7, Class 10, and Class 27. Properties like elongation, resistivity and dimensions of the wire shall be determined. The continuity of the coating shall be determined by the sodium polysulfide test. Adherence of the coating shall be determined by wrapping and immersion tests.
SCOPE
1.1 This specification covers nickel-coated, soft or annealed, round copper wire for use in electrical equipment.  
1.2 Five classes of wire are covered as follows:  
1.2.1 Class 2—Wire whose nickel coating is at least 2 % of the total weight of the coated wire.  
1.2.2 Class 4—Wire whose nickel coating is at least 4 % of the total weight of the coated wire.  
1.2.3 Class 7—Wire whose nickel coating is at least 7 % of the total weight of the coated wire.  
1.2.4 Class 10—Wire whose nickel coating is at least 10 % of the total weight of the coated wire.  
1.2.5 Class 27—Wire whose nickel coating is at least 27 % of the total weight of the coated wire.  
Note 1: For information purposes, the thickness of coating in microinches provided by the percentages listed in 1.2 is shown in Table 2.  
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ASTM B820-23(Test Method)
Standard Test Method for Bend Test for Determining the Formability of Copper and Copper Alloy Strip

SIGNIFICANCE AND USE
5.1 This bend test provides information as to the formability or the ability of copper and copper alloy strip to resist cracking when being formed.  
5.2 This test method can be used as a quality control tool to determine if material will form to a given radius.  
5.3 This test method is also useful in research and development to provide data for use in selecting a spring material that will safely form to the geometry of a given part.  
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SCOPE
1.1 This test method covers the technique of bend testing copper and copper alloy strip samples to determine product formability or the ability to resist cracking when forming a bend around a specific radius. The criterion for failure is the occurrence of cracks on the convex surface of the bend.  
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ABSTRACT
This specification establishes requirements for copper alloy sand castings for valve applications. The castings shall conform to the chemical composition requirements specified. Mechanical properties shall be determined from separately cast test bars, and shall conform with the requirements. Brinell hardness readings shall be taken in the grip end of the tension test bar and shall be made in accordance with the specified requirements.
SCOPE
1.1 This specification covers requirements for copper alloy sand castings for valve applications. Nominal compositions of the alloys defined by this specification are shown in Table 1.2  
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C96400: B369  
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SCOPE
1.1 This specification covers the requirements for copper-tin alloy (phosphor bronze), copper-tin-lead alloy (leaded phosphor bronze), and copper-tin-lead-zinc alloy (bearing bronze), plate, sheet, strip, and rolled bar for general application produced from Copper Alloy UNS Nos. C51000, C51100, C51180, C51900, C52100, C52180, C52400, C53400, and C54400. The phosphor bronzes commonly are used for deep drawing into bellows and stamping and forming into spring devices and into terminals and connectors for electrical apparatus because they combine high strength with high elongation. The leaded phosphor bronzes are used where strength, corrosion resistance, and machinability are required. The bearing bronze is used in bushings, bearings, and load-bearing thrust washers.
Note 1: All of the above alloys contain small amounts of phosphorus, used as a deoxidant in melting, and to enhance the mechanical properties.  
1.2 Units—The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system are not necessarily 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.  
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ABSTRACT
This specification establishes requirements for continuously cast rod, bar, tube, and shapes produced from copper alloys with nominal compositions. Castings produced to this specification may be manufactured for and supplied from stock. Mechanical tests are required only when specified by the purchaser in the purchase order. Continuous castings shall not be mechanically repaired, plugged, or burned in. Weld repairs may be made at the manufacturer's discretion. For sampling purposes, a lot shall consist of castings of the same composition and same cross-sectional dimensions, produced during the continuous operation of one casting machine, and submitted for inspection at one time unless specified otherwise. The specimen shall be comprised of the following major elements: copper, tin, lead, zinc, iron, aluminum, manganese, and nickel including cobalt. Residual elements may be present in cast copper-base alloys. The fractured bars shall be retained for chemical verification. Both the Brinell hardness reading and Rockwell hardness reading shall be taken on the grip end of the tension test bar. At the request of the purchaser castings shall be marked with the alloy number.
SCOPE
1.1 This specification covers requirements for continuously cast rod, bar, tube, and shapes produced from copper alloys with nominal compositions as listed in Table 1.2  
1.2 Castings produced to this specification may be manufactured for and supplied from stock. In such cases the manufacturer shall maintain heat traceability to specific manufacturing date and chemical analysis.  
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This specification covers the requirements for UNS C95300, C95400, C95410, C95500, C95800, C87500, C87800, C87850, and C89540 copper alloy permanent mold castings for general applications. UNS C95800 copper alloy used in sea water applications should be heat treated for better corrosion resistance. In general, alloys included in this specification are weldable. Mechanical properties like the tensile strength, yield strength and elongation are determined from separately cast test bar castings and should conform to the specified requirements.
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1.1 This specification covers requirements for copper alloy2 permanent mold castings for general applications. Nominal compositions of the alloys under this specification are shown in Table 1.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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Standard Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper Alloys

SIGNIFICANCE AND USE
4.1 The Form and Style for ASTM Standards manual provides mandatory requirements and recommended practices for the preparation and content of ASTM specifications. In order to promote consistency in the style and content of product specifications under its jurisdiction, Committee B05 recognizes the need to provide a supplementary document pertaining to the types of products and materials covered by specifications under its jurisdiction.  
4.2 This guide contains a list of sections to be considered for inclusion in a specification for copper and copper alloys, recommended wording, or both, for such sections. An electronic template including committee adopted language is included in the Appendix.7  
4.3 Persons drafting new product specifications, or modifying existing ones, under the jurisdiction of Committee B05, should follow this guide and the requirements of the Form and Style Manual to ensure consistency.
SCOPE
1.1 This guide covers the editorial procedures and form and style for product specifications under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys.
Note 1: For standards other than product specifications, such as test methods, practices, and guides, see the appropriate sections of Form and Style for ASTM Standards (Blue Book).2  
1.2 This guide has been prepared as a supplement to the current edition of the Form and Style Manual, and is appropriate for use by the subcommittees within ASTM Committee B05 on Copper and Copper Alloys. This guide is to be applied in conjunction with the Form and Style Manual. The Appendix contains a copy of the B05 electronic template which includes adopted language for various sections and provides a template for drafting B05 product specifications.
Note 2: The contents of this guide were previously maintained as a white paper under the title, “ASTM Committee B05 Outline of Form of Specifications.”  
1.3 Subcommittees preparing new product specifications or revising existing ones should follow the practices and procedures outlined herein, and be guided by the latest specifications covering similar commodities.  
1.4 If a conflict exists between this guide and the mandatory sections of the current edition of the Form and Style Manual, the Form and Style Manual requirements have precedence. If a conflict exists between this guide and the nonmandatory sections of the current edition of the Form and Style Manual, this guide has precedence.  
1.5 When patents are involved, the specifications writer should refer to the Form and Style Manual section on patents and trademarks. Also, refer to part F of the Form and Style Manual for trademark information and the safety hazards caveat.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM B927/B927M-23(Specification)
Standard Specification for Brass Rod, Bar, and Shapes

ABSTRACT
This specification establishes requirements for brass rod (round, hexagonal, and octagonal), bar (rectangular and square), and shapes of UNS Alloys C21000, C22000, C23000, C24000, C26000, C26800, C27000, and C27400. The material shall be made from cast billets, logs, or rods of copper alloy, as determined by chemical analysis. The products shall be manufactured by such hot working, cold working, and annealing processing as to produce a uniform wrought structure. The material shall conform to the chemical compositional requirements prescribed for copper, lead, iron, and zinc. The standard tempers, either hard or soft anneal (namely: O60, H01, H02, and H04), for rod and bar are specified. Tensile requirements to which the product shall conform includes tensile strength, yield strength, and elongation. The dimensional requirements for rods, bars, and shapes are given.
SCOPE
1.1 This specification establishes requirements for brass rod (round, hexagonal, and octagonal), bar (rectangular and square), and shapes of UNS Alloys C21000, C22000, C23000, C24000, C26000, C26800, C27000, C27400, C27450, C27451, C27453, C27550, and C28500.  
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