ASTM B86-11

1.1 This specification covers commercial zinc, zinc-aluminum castings and continuous cast bar stock, as designated and specified in Table 1. Seven alloy compositions are specified and designated as follows:

^A See Table 1, Footnote C.

^B SAE Specification, Nos. 903 and 925 conform to the requirements for alloys AG40A and AC41A, respectively.

1.2 Zinc Alloys Z33520, Z33523, Z35531, and Z35541 are used primarily in the manufacture of pressure die castings. Zinc-Aluminum Alloys Z35636, Z35631, and Z35841 are used in the manufacture of both foundry and pressure die castings. These alloys are also fabricated into continuous cast bar stock used for prototyping and screw machine stock.

1.3 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.

1.4 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described in Appendix X1.

1.5 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

Element	Alloy 3A,B,C,D Zamak 3 (AG40A) Z33520	Alloy 7A ,B,C,D,E Zamak 7 (AG40B) Z33523	Alloy 5A,B,C,D Zamak 5 (AC41A) Z35531	Alloy 2A,C,,D Zamak (AC43A) Z35541 †	ZA-8A,C,F ZA-8 Z35636	ZA-12A,C ,F ZA-12 Z35631	ZA-2A,C,F ZA-27 Z35841
Aluminum	3.7-4.3	3.7-4.3	3.7-4.3	3.7-4.3	8.0-8.8	10.5-11.5	25.0-28.0
Magnesium	0.02-0.06G	0.005-0.020	0.02-0.06G	0.02-0.06	0.01-0.03	0.01-0.03	0.01-0.02
Copper	0.1 maxH	0.1 maxE	0.7-1.2	2.6-3.3	0.8-1.3	0.5-1.2	2.0-2.5
Iron, max	0.05	0.05	0.05	0.05	0.075	0.075	0.075
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