ASTM B327-08
Standard Specification for Master Alloys Used in Making Zinc Die Casting Alloys

Standard No.

ASTM B327-08

Release Date

2008

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM B327-09

Latest

ASTM B327-21

Scope

1.1 This specification covers aluminum–base and zinc–
base master alloys used to make zinc die-casting alloys. Alloy compositions specified for aluminum–base master alloys (hardeners) are designated as shown in Table 1. Alloy composition specified for the zinc-base master alloy is designated as shown in Table 2.

1.2 Aluminum alloy hardeners are added to Special High Grade zinc (per Specification B 6) in the proper alloying ratios, as shown in Table 1, to produce zinc alloys for die casting.

1.3 Zinc-base master alloy is added to Special High Grade zinc (per Specification B 6) in the proper alloying ratio, as shown in Table 3, to produce zinc alloy for die casting.

1.4 Master alloys may be supplied in the form of shot, bar, ingot or jumbo ingot as specified by the purchaser.

1.5 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.

1.6 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 for Aluminum-Base Master Alloys

Note8212;The following applies to all specified limits in this table: For purposes of determining conformance with this specification, the observed value or calculated value obtained from analysis shall be rounded off “to the nearest unit” in the last right hand place of figures used in expressing the specified limit, in accordance with the rounding method of Practice E 29.

ASTM Alloy (UNS)A	Composition, percent												Usage
	Alu- minum, min	Copper	Iron, max	Silicon, max	Manga- nese, max	MagnesiumB	Zinc	Chro- mium, max	Nickel, max	Tin, max	Lead, maxB	Cad- mium, maxB
ZG71A (A07131)	87.0	1.7 max