ASTM B227-10

Standard Specification for Hard-Drawn Copper-Clad Steel Wire

ABSTRACT
This specification covers bare hard-drawn round copper-clad steel wire. The surface of the wire shall be smooth and free from imperfections not consistent with good commercial practice. The wire shall conform to the tensile requirements. Specimens shall be twisted to destruction and shall not reveal under test any seams, pits, slivers, or surface imperfections of sufficient magnitude to indicate inherent defects or imperfections in the wire. The electrical resistance of the wire shall be determined by resistance measurements. The finished wire shall contain no joints or splices made at finished size.
SCOPE
1.1 This specification covers bare hard-drawn round copper-clad steel wire for electrical purposes (Note 1).  
Note 1—Wire ordered to this specification is not intended for redrawing. If wire is desired for this purpose, consult the manufacturer.
1.2 Four grades of wire are specified, designated as follows (Note 2): Grade 40 HS, Grade 40 EHS, Grade 30 HS, and Grade 30 EHS.
Note 2—The grades covered by this specification correspond to the following commercial designations:
Grade 40 HS, High Strength, 40 % Conductivity.
  Grade 40 EHS, Extra High Strength, 40 % Conductivity
Grade 30 HS, High Strength, 30 % Conductivity.
Grade 30 EHS, Extra High Strength, 30 % Conductivity.  
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.

General Information

• Status: Historical
• Publication Date: 30-Apr-2010
• ICS: 77.140.65 - Steel wire, wire ropes and link chains
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.06 - Bi-Metallic Conductors

Relations

• Replaces: ASTM B227-04 - Standard Specification for Hard-Drawn Copper-Clad Steel Wire
• Effective Date: 01-May-2010
• Replaced By: ASTM B227-15 - Standard Specification for Hard-Drawn Copper-Clad Steel Wire
• Effective Date: 01-Apr-2015
• 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-May-2010
• Referred By: ASTM B228-11a(2021) - Standard Specification for Concentric-Lay-Stranded Copper-Clad Steel Conductors
• Effective Date: 01-May-2010
• Referred By: ASTM B229-12(2017) - Standard Specification for Concentric-Lay-Stranded Copper and Copper-Clad Steel Composite Conductors
• Effective Date: 01-May-2010
• Referred By: ASTM B193-20 - Standard Test Method for Resistivity of Electrical Conductor Materials
• Effective Date: 01-May-2010

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B227 −10
StandardSpecification for
1
Hard-Drawn Copper-Clad Steel Wire
This standard is issued under the fixed designation B227; 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.
1. Scope 3. Ordering Information
1.1 Thisspecificationcoversbarehard-drawnroundcopper- 3.1 Orders for material under this specification shall include
clad steel wire for electrical purposes (Note 1). the following information:
3.1.1 Quantity of each size and grade,
NOTE 1—Wire ordered to this specification is not intended for redraw-
3.1.2 Wire size: diameter in inches (see 5.1 and Table 1),
ing. If wire is desired for this purpose, consult the manufacturer.
3.1.3 Grade (see 1.2 and Table 1),
1.2 Four grades of wire are specified, designated as follows
3.1.4 Method of measuring elongation (see 7.3 and 7.4),
(Note 2): Grade 40 HS, Grade 40 EHS, Grade 30 HS, and
3.1.5 Package size (see 14.1),
Grade 30 EHS.
3.1.6 Specialpackagemarking,ifrequired(Section13),and
NOTE 2—The grades covered by this specification correspond to the 3.1.7 Place of inspection (Section 15).
following commercial designations:
Grade 40 HS, High Strength, 40 % Conductivity.
4. Material
Grade 40 EHS, Extra High Strength, 40 % Conductivity
Grade 30 HS, High Strength, 30 % Conductivity. 4.1 The wire shall be composed of a steel core with a
Grade 30 EHS, Extra High Strength, 30 % Conductivity.
substantially uniform and continuous copper cladding thor-
oughly bonded to it throughout.
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4.2 The finished copper-clad steel wire shall conform to the
conversions to SI units that are provided for information only
requirements prescribed in this specification.
and are not considered standard.
5. Dimensions and Permissible Variations
2. Referenced Documents
5.1 The size shall be expressed as the diameter of the wire
2.1 The following documents of the issue in effect on date
in decimal fractions of an inch using four places of decimals,
of material purchase form a part of this specification to the
that is, in tenths of mils (Note 3).
extent referenced herein.
NOTE 3—The values of wire diameters in Table 1 are given to the
2
2.2 ASTM Standards:
nearest 0.0001 in. and correspond to the standard sizes given in Specifi-
cationB258.Inspecifyingdiametersofwireorininspectingwire,express
B193 Test Method for Resistivity of Electrical Conductor
the diameter to the fourth decimal place. The diameters preceded by
Materials
asterisks are not in the American Wire Gage series and are also given to
B258 Specification for Nominal Diameters and Cross-
four places of decimals. They correspond to certain numbers of the
SectionalAreasofAWGSizesofSolidRoundWiresUsed
Birmingham Wire Gage of the British Standard Wire Gage and are used
as Electrical Conductors forcommunicationlines.Theuseofgagenumbersinspecifyingwiresizes
is not recognized in these specifications because of the possibility of
2.3 National Institute of Standards and Technology:
confusion. An excellent discussion of wire gages and related subjects is
3
NBS Handbook 100—Copper Wire Tables
contained inNBSHandbook100of the National Institute of Standards and
3
Technology.
5.2 Within the range of diameters included in Table 1, the
1
This specification is under the jurisdiction of the ASTM Committee B01 on
wire shall not vary from the specified diameter by more than
Electrical Conductors and is the direct responsibility of Subcommittee B01.06 on
the following amounts rounded off to the nearest 0.1 mil
Composite Conductors.
(0.0001 in.):
Current edition approved May 1, 2010. Published June 2010. Originally
approved in 1948. Last previous edition approved in 2004 as B227 – 04. DOI:
Specified Diameter, Permissible Variations in Specified
10.1520/B0227-10.
in. (mm) Diameter
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
0.2043 (5.189) to 0.1000 (2.540), incl ±1.5 %
Standards volume information, refer to the standard’s Document Summary page on
0.0999 (2.537) and under ±1.0 %
the ASTM website.
3
5.3 Ten percent, but not less than five coils or spools (or all
Available from National Institute of Standards and Technology (NIST), 100
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov. if the lot is less than five) from any lot of wire, shall be gaged
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:B227–04 Designation: B227 – 10
Standard Specification for
1
Hard-Drawn Copper-Clad Steel Wire
This standard is issued under the fixed designation B227; 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.
1. Scope
1.1 This specification covers bare hard-drawn round copper-clad steel wire for electrical purposes (Note 1).
NOTE 1—Wire ordered to this specification is not intended for redrawing. If wire is desired for this purpose, consult the manufacturer.
1.2 Four grades of wire are specified, designated as follows (Note 2): Grade 40 HS, Grade 40 EHS, Grade 30 HS, and Grade
30 EHS.
NOTE 2—The grades covered by this specification correspond to the following commercial designations:
Grade 40 HS, High Strength, 40 % Conductivity.
Grade 40 EHS, Extra High Strength, 40 % Conductivity
Grade 30 HS, High Strength, 30 % Conductivity.
Grade 30 EHS, Extra High Strength, 30 % Conductivity.
1.3The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are in SI units.
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.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein.
2
2.2 ASTM Standards:
B193 Test Method for Resistivity of Electrical Conductor Materials
B258 Specification for Nominal Diameters and Cross-SectionalAreas ofAWG Sizes of Solid Round Wires Used as Electrical
Conductors
2.3 National Institute of Standards and Technology:
3
NBS Handbook 100—Copper Wire Tables
3. Ordering Information
3.1 Orders for material under this specification shall include the following information:
3.1.1 Quantity of each size and grade,
3.1.2 Wire size: diameter in inches (see 5.1 and Table 1),
3.1.3 Grade (see 1.2 and Table 1),
3.1.4 Method of measuring elongation (see 7.3 and 7.4),
3.1.5 Package size (see 14.1),
3.1.6 Special package marking, if required (Section 13), and
3.1.7 Place of inspection (Section 15).
4. Material
4.1 The wire shall be composed of a steel core with a substantially uniform and continuous copper cladding thoroughly bonded
to it throughout.
1
This specification is under the jurisdiction of theASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.06 on Composite
Conductors.
Current edition approved AprilMay 1, 2004.2010. Published April 2004.June 2010. Originally approved in 1948. Last previous edition approved in 20032004 as
B227 – 034. DOI: 10.1520/B0227-104.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 3460,1070, Gaithersburg, MD 20899-3460.20899-1070, http://
www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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B227 – 10
TABLE 1 Tensile Requirements
A
Area at 20°C Tensile Strength, min, psi
Nominal Diameter,
2,A
cmil in. Grade 40 Grade 40 Grade 30 Grade 30
in.
HS EHS HS EHS
0.2043 41 740 0.03278 108 000 . . . 120 000 142 500
0.1819 33 090 0.02599 113 000 . . . 125 000 150 500
B
0.1650 27 230 0.02138 118 000 . . . 130 000 157 500
0.1620 26 240 0.02061 118 000 . . . 130 000 157 500
0.1443 20 820 0.01635 123 000 . . . 135 000 164 000
0.1285 16 510 0.01297 128 000 . . . 140 000 170 000
B
0.1280 16 380 0.01287 128 000 . . . 140 000 170 000
0.1144 13 090 0.01028 133 000 . . . 145 000 174 100
B
0.1040 10 820 0.008495 138 600 156 000 151 000 175 000
0.1019 10 380 0.008155 138 600 . . . 151 000 179 000
0.0808 6 530 0.005129 115 000 . . . 120 000 179 000
B
0.0800 6 400 0.005027 115 000 . . . 120 000 179 000
B
0.0640 4 096 0.003217 125 000 . . . 130 000 179 000
0.0403 1 624 0.001276 130 000 . . . 135 000 179 000
B
0.0390 1 521 0.001195 130 000 . . . 135 000 179 000
0.0320 1 024 0.000804 135 000 161 000 145 000 179 000
A 2 2
Metricequivalents:1in. = 25.4m
...