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Description of ASTM-B793 2015ASTM B793-15Historical Standard: Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection MoldsASTM B793Scope 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.
(A) 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 E29.
(B) UNS designations were established in accordance with Practice E527.
(C) Refer to Practice B908. (Note: Colors indicated are for North American applications.)
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:
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 Safety Data Sheet (SDS) 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. Keywords blanking dies; casting; casting alloys; forming dies; gravity casting; Kirksite; Kirksite A; Kirksite B; sheet metal dies; zinc; ICS Code ICS Number Code 77.120.60 (Lead, zinc, tin and their alloys) DOI: 10.1520/B0793-15 The following editions for this book are also available...
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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