ASTM B228-02

Standard Specification for Concentric-Lay-Stranded Copper-Clad Steel Conductors

SCOPE
1.1 This specification covers bare concentric-lay-stranded conductors made from bare round copper-clad steel wires for general use for electrical purposes.  
1.2 For the purpose of this specification, conductors are classified as follows: Grade 40 HS, Grade 30 HS, and Grade 30 EHS.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Apr-2002
• ICS: 29.060.20 - Cables
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.06 - Bi-Metallic Conductors

Relations

• Replaces: ASTM B228-98 - Standard Specification for Concentric-Lay-Stranded Copper-Clad Steel Conductors
• Effective Date: 10-Apr-2002
• Replaced By: ASTM B228-04 - Standard Specification for Concentric-Lay-Stranded Copper-Clad Steel Conductors
• Effective Date: 01-Apr-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B 228 – 02
Standard Specification for
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Concentric-Lay-Stranded Copper-Clad Steel Conductors
This standard is issued under the fixed designation B 228; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3.1.4 Direction of lay of outer layer, if other than left-hand
(see 6.3);
1.1 This specification covers bare concentric-lay-stranded
3.1.5 When physical tests shall be made (see 8.2);
conductors made from bare round copper-clad steel wires for
3.1.6 Package size (see 13.1);
general use for electrical purposes.
3.1.7 Special package marking, if required (Section 12);
1.2 For the purpose of this specification, conductors are
3.1.8 Lagging, if required (see 13.2); and
classified as follows: Grade 40 HS, Grade 30 HS, and Grade 30
3.1.9 Place of inspection (Section 14).
EHS.
3.2 In addition, Supplementary Requirements shall apply
1.3 The values stated in inch-pound units are to be regarded
only when specified by the purchaser in the inquiry, contract, or
as the standard. The values given in parentheses are in SI units.
purchase order for direct procurement by agencies of the U. S.
2. Referenced Documents
Government (S1, S2, and S3).
2.1 The following documents of the issue in effect on the
4. Material for Wires
date of material purchase form a part of this specification to the
4.1 The purchaser shall specify the grade of wire to be used
extent referenced herein:
in the conductor.
2.2 ASTM Standards:
4.2 Before stranding, the copper-clad steel wire shall meet
B 227 Specification for Hard-Drawn Copper-Clad Steel
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all the requirements of Specification B 227.
Wire
4.3 All wires in the conductor shall be of the same grade and
B 354 Terminology Relating to Uninsulated Metallic Elec-
2
quality.
trical Conductors
2.3 ANSI Standards:
5. Joints
3
C 42 Definitions of Electrical Terms
5.1 Joints or splices may be made in the finished individual
2.4 National Institute of Standards and Technology:
4 copper-clad steel wires composing concentric-lay-stranded
NBS Handbook 100—Copper Wire Tables
conductors, using more than three wires provided that such
3. Ordering Information joints or splices have a protection equivalent to that of the wire
itself and that they do not decrease the strength of the finished
3.1 Orders for material under this specification shall include
stranded conductor below the minimum breaking strength
the following information:
shown in Table 1. Such joints or splices shall be not closer than
3.1.1 Quantity of each size and grade;
50 ft (15 m) to any other joint in the same layer in the
3.1.2 Conductor size: approximate diameter in fractions of
conductor (Note 1).
an inch, or number and AWG size of individual wires (Section
7 and Table 1);
NOTE 1—Joints or splices in individual copper-clad steel wires in their
3.1.3 Grade (see 1.2 and Table 1); finished size are made by electrical butt welding. Two types of joints are
used and are described as follows:
(a) Weld-Annealed Joints—After butt welding, the wire is annealed for
a distance of approximately 5 in. (127 mm) on each side of the weld. The
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This specification is under the jurisdiction of ASTM Committee B01 on
weld is then protected from corrosion with a snug fitting seamless copper
Electrical Conductors and is the direct responsibility of Subcommittee B01.06 on 3
sleeve which extends at least ⁄8 in. (9.5 mm) on each side of the weld and
Composite Conductors.
which is thoroughly sealed to the wire with solder. The wall thickness of
Current edition approved April 10, 2002. Published May 2002. Originally
the sleeve is at least 10 % of the radius of the wire.
published as B 228 – 48 T. Last previous edition B 228 – 98.
This joint has a tensile strength of approximately 60 000 psi (415 MPa).
2
Annual Book of ASTM Standards, Vol 02.03.
3 This is less than the strength of the individual wires, but an allowance is
Available from American National Standards Institute, 11 W. 42nd St., 13th
made for this in the rated strength of the conductor as a whole. The
Floor, New York, NY 10036.
4
completed conductor when containing such joints is required to have the
Available from National Institute of Standards and Technology, (NIST),
Gaithersburg, MD 20899. full rated strength.
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B 228
TABLE 1 Construction Requirements and Breaking Strength of Concentric-Lay-Stranded Copper-Clad Steel Conductors
NOTE 1—Metr
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