1.1 本试验方法包括( 1. )质量增益的测定，以及( 2. )当在680°F[360°C]的水中或750°F[400°C]的蒸汽中进行腐蚀试验时，锆、铪及其合金产品的表面检查。 1.2 本试验方法将在本文规定的范围内全部用作产品验收试验。 1.3 本试验方法可用于锻造产品、铸件、粉末冶金产品和焊接金属。 1.4 除非使用单个装置，例如腐蚀质量增益（mg/dm） 2. ，以英寸-磅或国际单位制表示的数值应单独视为标准值。每个系统中规定的值不是精确的等价物；因此，每个系统必须相互独立使用。 SI值不能与英寸-磅值混合。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 有关具体的预防说明，请参阅第节 9 . 1.6 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====== 5.1 本试验方法主要用于锆、铪及其合金产品的验收试验。本标准已广泛用于新合金的开发、热处理实践和焊接技术的评估。 5.2 试样通常在仔细蚀刻和冲洗后进行测试。具有制造表面的试样也可以在不进一步去除表面的情况下进行测试。 5.3 当对内表面覆有第二种材料的管子进行试验时，应在试验前去除内覆层。

1.1 This test method covers ( 1 ) the determination of mass gain, and ( 2 ) the surface inspection of products of zirconium, hafnium, and their alloys when corrosion tested in water at 680°F [360°C] or in steam at 750°F [400°C]. 1.2 This test method is to be utilized in its entirety to the extent specified herein as a product acceptance test. 1.3 This test method may be used on wrought products, castings, powder metallurgy products, and weld metals. 1.4 Unless a single unit is used, for example corrosion mass gain in mg/dm 2 , the values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore each system must be used independently of the other. SI values cannot be mixed with inch-pound values. 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 establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9 . 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. ====== Significance And Use ====== 5.1 This test method is primarily used as an acceptance test for products of zirconium, hafnium, and their alloys. This standard has been widely used in the development of new alloys, heat treating practices, and for evaluation of welding techniques. 5.2 Specimens are normally tested after careful etching and rinsing. Specimens with as-manufactured surfaces may also be tested without further surface removal. 5.3 When tubing with a second material clad on the inner surface is to be tested, the inner cladding shall be removed prior to the test.