1.1 本试验方法包括测定钢、铸钢和铸铁的里氏硬度（A部分），包括里氏硬度试验仪器的验证方法（B部分）和标准试块的校准方法（C部分）。 注1: 本标准的原标题为“钢制品等倍硬度试验的标准试验方法” 1. 1.2 以国际单位或英寸-磅单位表示的数值应单独视为标准值。每个系统中所述的值不一定精确相等；因此，为了确保符合标准，每个系统应独立于另一个系统使用，并且两个系统的值不应合并。 1.3 本标准并不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（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 材料硬度是一个定义不明确的术语，根据所进行的试验类型和相关人员的期望，该术语可能有多种含义。里氏硬度试验为动态或回弹型，主要取决于被测材料的塑性和弹性性能。所得结果表明了强度，并取决于测试材料的热处理。 5.2 里氏硬度试验是仅测量接触表面状况的表面测定。在该位置生成的结果不代表任何其他表面位置的零件，也不提供关于地下位置材料的信息。

1.1 This test method covers the determination of the Leeb hardness of steel, cast steel, and cast iron (Part A), including the methods for the verification of Leeb hardness testing instruments (Part B), and the calibration of standardized test blocks (Part C). Note 1: The original title of this standard was “Standard Test Method for Equotip Hardness Testing of Steel Products.” 1 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 ====== 5.1 Hardness of a material is a poorly defined term that may have many meanings depending on the type of test performed and the expectations of the person involved. The Leeb hardness test is of the dynamic or rebound type, which primarily depends both on the plastic and on the elastic properties of the material being tested. The results obtained are indicative of the strength and dependent on the heat treatment of the material tested. 5.2 The Leeb hardness test is a superficial determination only measuring the condition of the surface contacted. The results generated at that location do not represent the part at any other surface location and yield no information about the material at subsurface locations.