1.1 本规程涵盖了用于显微镜检查的蚀刻金属和合金的化学溶液和程序。还包括安全预防措施和其他信息。 1.2 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 有关具体的警示声明，请参阅 6.1 和表 2. 1.3 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。 ===意义和用途====== 5.1 本规程列出了金相检验试样蚀刻的推荐方法和解决方案。列出了突出大多数主要合金系统中存在的相和成分的解决方案。

1.1 This practice covers chemical solutions and procedures to be used in etching metals and alloys for microscopic examination. Safety precautions and miscellaneous information are also included. 1.2 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 cautionary statements, see 6.1 and Table 2. 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 ====== 5.1 This practice lists recommended methods and solutions for the etching of specimens for metallographic examination. Solutions are listed that highlight the phases and constituents present in most major alloy systems.