ASTM B860-09a
- standard by ASTM International, 10/01/2009
- Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing
- Category: ASTM
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Full Description
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 six 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 A-5 | 96/4 Zn/Al | High Purity | ... | |
| Type A-6 | 96/4 Zn/Al | Low Purity | ... | |
| Type S-1 | 90/10 Zn/Sb | Z55710 |
1.2 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.
1.3 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 Safety Data Sheet (MSDS) 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.
TABLE 1 Chemical Requirements Composition, % (Range or Maximum Value)A
| Type A-1 | 90 % Zinc-10 % Aluminum (90/10 Zn/Al) | High Purity | |||||
|---|---|---|---|---|---|---|---|
| Type A-2 | 90 % Zinc-10 % Aluminum (90/10 Zn/Al) | Low Purity | |||||
| Type A-3 | 95 % Zinc-5 % Aluminum (95/5 Zn/Al) | High Purity | |||||
| Type A-4 | 95 % Zinc-5 % Aluminum (95/5 Zn/Al) | Low Purity | |||||
| Type A-5 | 96 % Zinc-4 % Aluminum (96/4 Zn/Al) | High Purity | |||||
| Type A-6 | 96 % Zinc-4 % Aluminum (96/4 Zn/Al) | Low Purity |
Document History ASTM B860-18(2022)ASTM B860-18ASTM B860-17ASTM B860-16ASTM B860-15ASTM B860-13ASTM B860-09aASTM B860-09ASTM B860-08ASTM B860-07ASTM B860-05ASTM B860-01E1ASTM B860-01ASTM B860-00 ASTM D4035-02(2008)Standard Performance Specification for Knitted Necktie and Scarf Fabrics.. $26.00 $52.00  ASTM D5431-08Standard Performance Specification for Woven and Knitted Sheeting Products for Institutional and Hou.. $26.00 $52.00  ASTM B348-08aStandard Specification for Titanium and Titanium Alloy Bars and Billets.. $30.00 $60.00  ASTM D7470-08Standard Practice for Evaluating Elevated Temperature Performance of End-Jointed Lumber Studs.. $25.00 $50.00 | ||||