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This specification covers bare concentric-lay-stranded conductors made from bare round copper-clad steel wires for general use for electrical purposes. Conductors are classified as follows: Grade 40 HS, Grade 30 HS, and Grade 30 EHS. The numbers and diameters of the wires in the concentric-lay-stranded conductors shall conform to the requirements prescribed. Tests for physical and electrical properties of wires composing concentric-lay-stranded conductors made from copper-clad steel wire shall be made before stranding.
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.
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, Grade 30 EHS, Grade 40 DSA, and Grade 30 DSA.
The grades covered by this specification correspond to the following commercial designations:
Grade 40 HS,
High Strength, 40% Conductivity, Hard Drawn
Grade 30 HS,
High Strength, 30% Conductivity, Hard Drawn
Grade 30 EHS,
Extra High Strength, 30% Conductivity, Hard Drawn
Grade 40 DSA,
40% Conductivity, Dead Soft Annealed
Grade 30 DSA,
30% Conductivity, Dead Soft Annealed
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.
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B227 Specification for Hard-Drawn Copper-Clad Steel Wire
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
B910/B910M Specification for Annealed Copper-Clad Steel Wire
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ANSI StandardsC42 Definitions of Electrical Terms Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
National Institute of Standards and TechnologyNBS Handbook 100Copper Wire Tables Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
ICS Number Code 29.060.20 (Cables)
UNSPSC Code 26121520(Copper steel wire)
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ASTM B228-11a(2016), Standard Specification for Concentric-Lay-Stranded Copper-Clad Steel Conductors, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top