ASTM B860-00

ASTM B860-00 - 10.5.2002

1. Scope

1.1 This specification covers zinc master alloys which are used in hot dip galvanizing for the purpose of adjusting the concentration of certain alloying elements in the molten zinc bath. Table 1 covers the chemical composition of these materials which include three master alloys of zinc-aluminum (brightener) and one master alloy of zinc-antimony.
ASTM Common UNS
Type A-1 90/10 Zn/Al High Purity Z30750
Type A-2 90/10 Zn/Al Low Purity Z31710
Type A-3 95/5 Zn/Al High Purity Z30503
Type A-4 95/5 Zn/Al Low Purity Z31510
Type S-1 90/10 Zn/Sb Z55710

1.2 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 become familiar with all hazards including those identified in the appropriate Material Data Sheet for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

E527-23	Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
B899-25	Standard Terminology Relating to Non-ferrous Metals and Alloys
B949-23	Standard Specification for General Requirements for Zinc and Zinc Alloy Products
B997-26	Standard Specification for Zinc-Aluminum Alloys in Ingot Form for Hot-Dip Coatings
ISO3815-2	Zinc and zinc alloys Part 2: Analysis by inductively coupled plasma optical emission spectrometry
B897-23	Standard Specification for Configuration of Zinc and Zinc Alloy Jumbo, Block, Half Block, and Slab Ingot
E88-25	Standard Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition
E536-23	Standard Test Methods for Chemical Analysis of Zinc and Zinc Alloys
ISO3815-1	Zinc and zinc alloys Part 1: Analysis of solid samples by optical emission spectrometry
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications