1.1 本试验方法包括使用韦氏硬度计B型测定铝合金的压痕硬度。 1.2 以国际单位制表示的数值应视为标准。国际单位制后括号中给出的值仅供参考，不被视为标准值。 注1: 另外两个型号，A和B-75，正在使用中，但不包括在本测试方法中。模型A不提供硬度的数值，而模型B-75仅涵盖铝合金感兴趣范围的一部分。 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。 1.4 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====== 4.1 韦氏硬度计是便携式的，因此可用于现场测定制造零件和单个试样的硬度，用于生产控制。它不像洛氏硬度计或布氏硬度计那样灵敏；看见 10.2 . 4.2 该试验方法只能在适用材料规范中引用时使用。

1.1 This test method covers the determination of indentation hardness of aluminum alloys with a Webster hardness gage, Model B. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. Note 1: Two other models, A and B-75, are in use, but are not covered in this test method. Model A does not provide numerical values of hardness and Model B-75 covers only a part of the range of interest for aluminum alloys. 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 determine the applicability of regulatory limitations prior to use. 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 ====== 4.1 The Webster hardness gage is portable and therefore useful for in situ determination of the hardness of fabricated parts and individual test specimens for production control purposes. It is not as sensitive as Rockwell or Brinell hardness machines; see 10.2 . 4.2 This test method should be used only as cited in applicable material specifications.