ASTM A855/A855M-03(2014) - 1.8.2014
 
1. Scope

1.1 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.

1.2 The five grades covered are as follows:

1.2.1 Utilities,

1.2.2 Common,

1.2.3 Siemens-Martin,

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

1.4 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.

 
2. Referenced Documents

A90/A90M-21

Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings

GF-1

Standard Practice for Determination of Cerium and Lanthanum Compositions in Galfan Alloy (5-Al-0.04?% La-0.04?% Ce-Bal SHG Zn) Available from International Lead Zinc Research Organization, 2525 Meridian Parkway, P.O. Box 12036, Research Triangle Park, NC 27709-2036.

E1277-23

Standard Test Method for Analysis of Zinc-5 % Aluminum-Mischmetal Alloys by Inductively Coupled Plasma Atomic Emission Spectrometry

E47-93

Standard Test Methods for Chemical Analysis of Zinc Die-Casting Alloys (Withdrawn 1997)

B750-22

Standard Specification for GALFAN (Zinc-5 % Aluminum-Mischmetal) Alloy in Ingot Form for Hot-Dip Coatings

A902-24

Standard Terminology Relating to Metallic Coated Steel Products