1.1 本规程涵盖用于蚀刻金属和合金以进行显微镜检查的化学溶液和程序。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）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 有关具体的警告声明，请参阅 6.1 和表 2. ====意义和用途====== 5.1 本规程列出了金相检验用试样蚀刻的推荐方法和解决方案。列出了解决方案，以突出大多数主要合金系统中存在的相。

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 and health practices and determine the applicability of regulatory limitations prior to use. For specific cautionary statements, see 6.1 and Table 2. ====== Significance And Use ====== 5.1 This practice lists recommended methods and solutions for the etching of specimens for metallographic examination. Solutions are listed to highlight phases present in most major alloy systems.