1.1 This specification covers commercial zinc alloys in ingot form for remelting for the manufacture of dies and molds from the alloys as shown in Table 1.
1.2 This specification presents requirements for zinc alloys suitable for the production of sand cast or plaster cast forming dies for sheet metal stamping operations and plastic injection molding. Alloy A is intended for use in the fabrication of dies for sheet metal stamping under drop hammer and hydraulic pressure. Alloy B is a special purpose alloy of closely controlled composition and is primarily used in the manufacture of plastic injection molds.
1.3 This specification covers two zinc alloys which are specified and designated as follows:
| UNS | ASTM | Traditional |
| Z35543 | Alloy A | Kirksite A |
| Z35542 | Alloy B | Kirksite B |
1.4 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.
1.5 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 and North American Color Code RequirementsA,B
| Composition, % | ||
|---|---|---|
| UNS Z35543 Alloy A Kirksite A | UNS Z35542 Alloy B Kirksite B | |
| Color CodeC | Green/Red | Green/Black |
| Element | ||
| Aluminum | 3.5–4.5 | 3.9–4.3 |
| Cadmium | 0.005 max | 0.003 max |
| Copper | 2.5–3.5 | 2.5–2.9 |
| Iron | 0.100 max | 0.075 max |
| Lead | 0.007 max | 0.003 max |
| Magnesium | 0.02ASTM B793-12 history
Copyright ©2024 All Rights Reserved | |