1.1 本规程规定了砂型、永久型、离心铸造和连续铸造铜合金拉伸试验用试样和试样（机加工和未加工）的制备程序。 1.2 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 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。 ====意义和用途====== 4.1 根据本规程浇注的砂、永久性铸模和离心铸件的试棒测定的机械性能代表了从相同热量浇注的铸件中金属的性能。由于不同尺寸、截面和设计的凝固效应，这些机械性能可能与相应铸件的性能不同。 4.2 连续铸件的试棒取自铸件，因此代表铸件的性能。

1.1 This practice establishes procedures for preparing test coupons and specimens (machined and unmachined) for tension tests of copper alloys for sand, permanent mold, centrifugal and continuous castings. 1.2 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. 1.3 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. ====== Significance And Use ====== 4.1 The mechanical properties determined from test bars for sand, permanent mold, and centrifugal castings poured in accordance with this practice represent the properties of the metal going into castings poured from the same heat. These mechanical properties may not be the same as the properties of the corresponding castings because of the solidification effects of varying size, section, and design. 4.2 Test bars for continuous castings are taken from the castings and therefore represent the properties of the castings.