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ASTM A855/A855M 2003 Edition, October 1, 2003
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Standard Specification for Zinc-5 % Aluminum-Mischmetal Alloy-Coated Steel Wire Strand
Includes all amendments and changes through Reapproval Notice , 2014
Page Count:5
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This specification covers five grades of zinc-5 % aluminum-mischmetal (Zn-5 Al-MM) alloy-coated, steel wire strand, composed of a number of round, steel wires, with four weights of Zn-5 Al-MM alloy coatings, suitable for use as guys, messengers, span wires, and for similar purposes. The product is intended for applications requiring corrosion resistance and formability.

The five grades covered are as follows:




High-strength, and

Extra high-strength,

Minimum breaking strengths of strand for each grade are described in Section 7.

The four weights of coatings are: Class1 and Classes A, B, and C. Minimum weights of Zn-5 Al-MM alloy are described in Section 10.

This specification is applicable to orders in either inch-pound units (as A855) or acceptable SI units (as A855M). Inch-pound units and SI units are not necessarily equivalent.