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This specification covers round, zinc-coated (galvanized), steel core wire with three classes of zinc coating used for mechanical reinforcement in the manufacture of aluminum conductors, steel-reinforced (ACSR). The wire is furnished in three classes of coating, namely: Class A, Class B, and Class C. The base metal shall be steel produced by the open-hearth, electric-furnace, or basic-oxygen process. The wire shall be cold drawn and coated with zinc to produce the desired properties and the the slab zinc used for coating shall be high-grade or better. The steel shall conform to the chemical composition requirements prescribed for carbon, manganese, phosphorus, sulfur, and silicon, as determined by chemical analysis. The following tests shall be performed: (1) tensile test to determine the mechanical properties such as ultimate tensile strength, elongation, and stress at extension, (2) wrap test, (3) coating test to determine conformity to the specified diameter and area density requirements, and (4) coating adherence test. Requirements for joints which may be made by electric butt-weld or flash-welding are detailed. The density and resistivity of galvanized steel wire are prescribed for the purposes of calculating mass per unit length, cross-sections, and so forth.
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 round, zinc-coated, steel core wire with two classes of zinc coating for use in overhead electrical conductors.
1.2 This specification covers wire of diameter from 0.0500 to 0.1900 in. or 1.27 to 4.82 mm, inclusive.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B6 Specification for Zinc
B193 Test Method for Resistivity of Electrical Conductor Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ICS Number Code 29.060.01 (Electrical wires and cables in general); 29.060.10 (Wires)
UNSPSC Code 26121540(Galvanized wire)