1.1 本规范规定了铜镍锡合金、铜镍锌合金（镍银）和铜镍合金板材、薄板、带材和轧制棒材的要求。涵盖以下合金: 标称成分，% 铜合金 以前使用过 Chro公司- UNS编号。 2. 任命 铜 镍 锌 锡 MIM C70600 . 90 10 . . . C70620 . 90 10 . . . C71000 6. 80 20 . . . C71500 5. 70 30 . . . C71520 . 70 30 . . . C72200 . 85 15 . . 0.5 C72500 . 89 9 . 2. . C73500 1. 72 18 10 . . C74000 9 70 10 20 . . C74500 3. 65 10 25 . . C75200 2. 65 18 17 . . C76200 8. 59 12 29 . . C77000 4. 55 18 27 . . 注1: 规范涵盖了用作表面冷凝器和热交换器管板的铜镍合金铜合金UNS编号C70600、C70620、C71500、C71520和C72200板 B171/B171M . 1.2 单位- 以英寸-磅单位或国际单位表示的数值应单独视为标准值。在本文中，国际单位制显示在括号中。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。

1.1 This specification establishes the requirements for copper-nickel-tin alloy, copper-nickel-zinc alloy (nickel silver), and copper-nickel alloy plate, sheet, strip, and rolled bar. The following alloys are covered: Nominal Composition, % Copper Alloy Previously Used Chro- UNS No. 2 Designation Copper Nickel Zinc Tin mium C70600 . 90 10 . . . C70620 . 90 10 . . . C71000 6 80 20 . . . C71500 5 70 30 . . . C71520 . 70 30 . . . C72200 . 85 15 . . 0.5 C72500 . 89 9 . 2 . C73500 1 72 18 10 . . C74000 9 70 10 20 . . C74500 3 65 10 25 . . C75200 2 65 18 17 . . C76200 8 59 12 29 . . C77000 4 55 18 27 . . Note 1: Plates of copper-nickel alloy Copper Alloy UNS Nos. C70600, C70620, C71500, C71520, and C72200 for use as tube plates in surface condensers and heat exchangers are covered by Specification B171/B171M . 1.2 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. 1.3 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.