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This specification covers five grades of zinc-coated, steel wire strand, composed of a number of round, steel wires, with four weights of zinc coatings, suitable for use as guys, messengers, span wires, and for similar purposes. The five grades covered are as follows: utilities, common, Siemens-Martin, high-strength, and extra high-strength. The base metal shall be steel made by any commercially accepted steel making process and of such quality and purity that, when drawn to the size of wire specified and coated with zinc, the finished strand and the individual wires shall be of uniform quality and have the properties and characteristics as prescribed in this specification. Strands shall have a left lay and all wires shall be stranded with uniform tension and be sufficiently close. The finished strand shall meet the requirements according to the specified approximate weight per unit length of strand against minimum breaking strength, elongation, and ductility of steel. The zinc-coated wire shall be capable of being wrapped in a close helix without cracking or delaminating the zinc coating. Joints in the wires composing the strand shall be either the brazed-lap type or electric-butt-welded type shall be coated with zinc after completion so that the joints have protection from corrosion equivalent to that of the zinc-coated wire itself.
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.
Significance and Use
1.1 This specification covers five grades of zinc-coated, steel wire strand, composed of a number of round, steel wires, with four weights of zinc coatings, suitable for use as guys, messengers, span wires, and for similar purposes.
1.2 The five grades covered are as follows:
1.2.4 High-Strength, and
1.2.5 Extra High-Strength.
1.2.6 Minimum breaking strengths of strand for each grade are described in Section 7.
1.3 The four weights of zinc coatings are: Class 1 and Classes A, B, and C. Minimum weights of zinc coatings are described in Section 10.
1.4 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 (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
A902 Terminology Relating to Metallic Coated Steel Products
B6 Specification for Zinc
ICS Number Code 29.060.10 (Wires)
UNSPSC Code 31152206(Coated steel wire)