1.1 本试验方法包括使用比较硬度计测定金属材料的压痕硬度。 1.2 本试验方法仅适用于使用根据试验方法标准化的测试棒的便携式比较硬度试验机 E10 作为比较的基础。 1.3 本试验方法还包括用于比较以确定硬度值的测试棒的校准。 1.4 比较硬度试验期间使用的压痕力通常是通过在制造商说明书中概述的适当区域敲击锤子施加的冲击载荷。 1.5 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。 1.6 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。 1.7 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====== 4.1 比较硬度试验是一种经验动态压痕硬度试验。比较硬度测试提供了有关金属材料的有用信息。这些信息可能与金属材料的抗拉强度、耐磨性、延展性、热处理条件或其他物理特性有关，并可能有助于质量控制和材料选择。 4.2 在测试零件的特定位置进行的比较硬度测试可能不能代表整个测试零件或最终产品的物理特性。

1.1 This test method covers the determination of indentation hardness of metallic materials using comparison hardness testers. 1.2 This test method applies only to those portable comparison hardness testers that use test bars that have been standardized according to Test Method E10 as a basis for comparison. 1.3 Calibration of test bars, used for comparison to determine hardness numbers, is also covered by this test method. 1.4 The impression force used during comparison hardness testing is normally an impact load applied by striking a hammer on the appropriate areas as outlined in the manufacturer's instructions. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety problems, 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. 1.7 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 comparative hardness test is an empirical dynamic indentation hardness test. Comparative hardness tests provide useful information about metallic materials. This information may correlate to tensile strength, wear resistance, ductility, heat treatment condition, or other physical characteristics of metallic materials, and may be useful in quality control and selection of materials. 4.2 Comparative hardness testing at a specific location on a test part may not represent the physical characteristics of the whole test part or end product.