1.1 本规范涵盖了标称成分如所示的铜镍合金铸件的要求 表1 . 1.2 这些合金的铸件主要用于耐腐蚀应用，如建筑或压力容器，特别是用于船用泵、阀门和配件。 1.3 这些合金被认为是可焊接的，但它们可能会进行焊接测试以确保可焊接性。当要对铸件进行大量焊接时，应在订购信息中指定可焊性测试( 5.2.6 )以确保适当的焊接特性。 1.4 单位-- 以英寸-磅单位或国际单位表示的值应单独视为标准值。 在文本中，国际单位制显示在括号中。每个系统中所述的值不一定是完全等效的；因此，为确保符合标准，每个系统应独立使用，两个系统的值不得组合。 1.5 以下危险声明仅适用于第节 8. 本规范的焊接性试验。 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 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 the requirements for copper-nickel alloy castings with nominal compositions shown in Table 1 . 1.2 Castings of these alloys are used primarily for corrosion-resistance applications such as construction or pressure vessels, particularly for marine pumps, valves, and fittings. 1.3 These alloys are considered weldable, but they may be ordered with a weld test to ensure weldability. When extensive welding is to be performed on the casting, weldability tests should be specified in the ordering information ( 5.2.6 ) to ensure proper welding characteristics. 1.4 Units— The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.5 The following hazard statement applies only to Section 8 , Weldability Test, of this specification. 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 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.