1.1 This specification covers commercial zinc, zincaluminum castings and continuous cast bar stock, as designated and specified in Table 1. Eight alloy compositions are specified and designated as follows: Common Traditional ASTMA UNS Alloy 3 Zamak 3 AG 40AB Z33525 Alloy 7 Zamak 7 AG 40B Z33527 Alloy 5 Zamak 5 AC 41AB Z35533 Alloy 2 Zamak 2 AC 43A Z35545 ZA-8 ZA-8 ... Z35638 ZA-12 ZA-12 ... Z35633 ZA-27 ZA-27 ... Z35841 ACuZinc 5C ... Z46541 A See Table 1, Footnote C. B SAE Specification, Nos. 903 and 925 conform to the requirements for alloys AG40A and AC41A, respectively. C ACuZinc and ACuZinc5 are registered trade names of the General Motors Corporation.
1.2 Zinc Alloys Z33525, Z33527, Z35533, and Z35545 are used primarily in the manufacture of pressure die castings. Zinc-Aluminum Alloys Z35638, Z35633, 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 Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM B86-22 Referenced Document
ASTM B240 Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloys in Ingot Form for Foundry and Die Castings
ASTM B275 Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
ASTM B557 Standard Test Methods of Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
ASTM B899 Standard Terminology Relating to Non-ferrous Metals and Alloys
ASTM B949 Standard Specification for General Requirements for Zinc and Zinc Alloy Products*, 2023-04-01 Update
ASTM E23 Standard Test Methods for Notched Bar Impact Testing of Metallic Materials
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM E527 Standard Practice for Numbering Metals and Alloys (UNS)
ASTM E536 Standard Test Methods for Chemical Analysis of Zinc and Zinc Alloys
ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials*, 2024-01-01 Update
ISO 15201 Zinc and zinc alloys - Castings - Specifications