ASTM B227-15

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:B227 −15
Standard Specification for
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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
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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
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NBSHandbook 100—Copper Wire Tables
contained inNBSHandbook100of the National Institute of Standards and
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Technology.
5.2 Within the range of diameters included in Table 1, the
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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
Bi-Metallic Conductors.
(0.0001 in.):
Current edition approved April 1, 2015. Published April 2015. Originally
approved in 1948. Last previous edition approved in 2004 as B227 – 10. DOI:
Specified Diameter, Permissible Variations in Specified
10.1520/B0227-15.
in. (mm) Diameter
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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
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.
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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
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