1.1 本试验方法描述了对锻造铜合金轧制产品中残余应力进行硝酸亚汞试验的技术。 注1: 对于任何特定的铜合金，应参考材料规范。 注2: 试验方法 B858 可被视为一种可能的替代试验方法，不涉及汞的使用。 注3: 在确定铜合金中残余应力的潜在状态方面，该试验方法在历史上被认为是可靠的，但由于与汞使用和环境适当处置相关的危害，该试验方法未被推广使用。 1.2 单位- 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 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。 有关具体的预防和危险说明，请参阅第节 1. , 6. 和 7. . ( 警告- 许多监管机构已将汞指定为一种危险物质，可导致严重的医疗问题。汞或其蒸汽已被证明对健康有害，并对材料具有腐蚀性。在处理汞和含汞产品或两者时要小心。有关更多信息，请参阅适用的产品安全数据表（SDS）。当地或国家法律禁止销售汞或含汞产品，或两者兼有。用户必须确定其所在地销售的合法性。） 1.4 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 本试验方法是一种加速试验，用于检测是否存在残余（内部）应力，这些残余（内部）应力可能会导致存储或使用中的单个零件因应力腐蚀开裂而失效。 5.2 本试验方法不适用于施加应力的组件或零件。如果用于此目的，结果应仅供参考，而不是组件、其零部件或原始磨机产品被拒收的原因。

1.1 This test method describes the technique for conducting the mercurous nitrate test for residual stresses in wrought copper alloy mill products. Note 1: For any particular copper alloy, reference should be made to the material specification. Note 2: Test Method B858 may be considered as a possible alternative test method which does not involve the use of mercury. Note 3: This test method is considered historically reliable for determining the potential state of residual stress in copper alloys, but not promoted for use due to the hazards relating to mercury use and environmentally appropriate disposal. 1.2 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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 determines the applicability of regulatory limitations prior to use. For specific precautionary and hazard statements see Sections 1 , 6 , and 7 . ( Warning— Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products, or both. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.) 1.4 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 an accelerated test for detecting the presence of residual (internal) stresses that might result in failure of individual parts in storage or in service due to stress corrosion cracking. 5.2 This test method is not intended for use on assemblies or parts under applied stress. If used for that purpose, the results shall be for information only and not a cause for rejection of the assembly, its component parts, or the original mill product.