1.1 本规范涵盖了用于制造规定和指定的旋转铸件的重熔铸锭形式的锌合金，如 表1 .规定了七种合金成分，指定如下: 常见的 传统的 UNS 旋转铸造合金SC-A . Z35550 旋转铸造合金SC-B . Z35551 旋转铸造合金SC-C . Z35534 旋转铸造合金SC-D HJ10 Z35547 旋转铸造合金SC-E HJ20 Z35548 旋转铸造合金SC-F HJ40 Z35552 ZA-73 . Z36500 1.2 规范中规定的锌合金#2、#3、#5和ZA-8 B240 也用于旋转铸造工艺中。 1.3 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任熟悉所有危险，包括制造商提供的本产品/材料的适当安全数据表（SDS）中确定的危险，制定适当的安全、健康和环境实践，并在使用前确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers zinc alloys in ingot form for remelting for the manufacture of Spin Castings as specified and designated, as shown in Table 1 . Seven alloy compositions are specified, designated as follows: Common Traditional UNS Spin Casting Alloy SC-A . Z35550 Spin Casting Alloy SC-B . Z35551 Spin Casting Alloy SC-C . Z35534 Spin Casting Alloy SC-D HJ10 Z35547 Spin Casting Alloy SC-E HJ20 Z35548 Spin Casting Alloy SC-F HJ40 Z35552 ZA-73 . Z36500 1.2 Zinc alloys #2, #3, #5, and ZA-8 specified in Specification B240 are also used in the spin casting process. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.4 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. 1.5 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.