1.1 本试验方法规定了便携式仪器的要求，该仪器旨在通过在现场或试验实验室外对材料表面进行压痕试验，或在试样的尺寸或重量使其无法按照标准进行试验的情况下，测量金属材料的洛氏硬度或布氏硬度 第10页 或 第18页 硬度测试仪。 1.2 用于测量洛氏硬度或布氏硬度的原理与 第18页 洛氏硬度或硬度的标准试验方法 第10页 布氏硬度的标准试验方法。 注1: 标准试验方法 第10页 和 第18页 将在本试验方法中称为标准方法。 1.3 本试验方法涵盖的便携式硬度计仅通过间接验证方法进行验证。尽管便携式硬度计设计为采用与标准试验方法中定义的相同的试验条件，但便携式洛氏硬度计和布氏硬度计以及便携式洛氏试验仪的深度测量系统施加的力可能不符合标准方法的公差要求。 便携式硬度计应使用符合标准试验方法要求的压头。 1.4 本试验方法不适用于便携式硬度计，该硬度计通过不同于中定义的方法或程序测量硬度 第10页 或 第18页 例如，本试验方法不适用于ASTM标准规程中规定的方法 公元833年 ，测试方法 1995年 和 1038年 或 B647型 . 1.5 报告部分定义了如何表明测试结果是通过使用符合本文件的便携式设备获得的。 1.6 附件A1 其中规定了这些仪器的定期间接验证和日常验证要求。 1.7 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 3.1 便携式硬度计用于测试因其尺寸、位置或其他要求（如测试点）而无法使用传统固定仪器进行测试的材料。 3.2 便携式硬度计的性质会导致可能影响测试结果的变化；因此，根据本试验方法进行的硬度测量不符合 第10页 或 第18页 。用户应比较 第110页 , 第10页 和 第18页 了解便携式和固定式仪器之间预期结果的差异。 3.3 当使用便携式硬度计时，两个可能显著影响测量精度的测试参数是压头与测试表面的对准以及测试力的计时。用户应尽一切可能保持压头中心线与试验表面垂直，并使用试验方法中规定的相同时间周期施加试验力 第10页 或测试方法 第18页 . 3.4 便携式硬度计是一种精密仪器，当它们从一个测试点移动到另一个测试地点时，会受到损坏。因此，建议在测试过程中重复日常验证过程，以确保其正常工作。 3.5 零件上特定位置的硬度测试可能不能代表整个零件或最终产品的物理特性。

1.1 This test method defines the requirements for portable instruments that are intended to be used to measure the Rockwell or Brinell hardness of metallic materials by performing indentation tests on the surface of materials in the field or outside of a test lab, or in cases where the size or weight of the test piece prevents it from being tested on a standard E10 or E18 hardness tester. 1.2 The principles used to measure the Rockwell or Brinell hardness are the same as those defined in the E18 standard test method for Rockwell or E10 standard test method for Brinell. Note 1: Standard test methods E10 and E18 will be referred to in this test method as the standard methods. 1.3 The portable hardness testers covered by this test method are verified only by the indirect verification method. Although the portable hardness testers are designed to employ the same test conditions as those defined in the standard test methods, the forces applied by the portable Rockwell and Brinell testers and the depth measuring systems of the portable Rockwell testers may not meet the tolerance requirements of the standard methods. Portable hardness testers shall use indenters that meet the requirements of the standard test methods. 1.4 This test method does not apply to portable hardness testers that measure hardness by a means or procedure that is different than those defined in E10 or E18 For example, this test method does not apply to the methods defined in ASTM standard Practice A833 , Test Methods A956 and A1038 or B647 . 1.5 A report section is included to define how to indicate that the test result was obtained by using a portable device that conforms to this document. 1.6 Annex A1 is included that defines the periodic indirect verification and daily verification requirements for these instruments. 1.7 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. 1.8 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 ====== 3.1 Portable hardness testers are used for testing materials that because of their size, location or other requirements such as test point are unable to be tested using traditional fixed instruments. 3.2 Portable hardness testers, by their nature, induce variation that could influence the test results; therefore, hardness measurements made in accordance with this test method are not considered to meet the requirements of E10 or E18 . The user should compare the results of the precision and bias studies in E110 , E10 and E18 to understand the differences in results expected between portable and fixed instruments. 3.3 Two test parameters that can significantly influence the measurement accuracy when using portable hardness testers are the alignment of the indenter to the test surface and the timing of the test forces. The user is cautioned to do everything possible to keep the centerline of the indenter perpendicular to the test surface and to apply the test forces using the same time cycle as defined in Test Method E10 or Test Methods E18 . 3.4 Portable hardness testers are delicate instruments that are subject to damage when they are moved from one test site to another. Therefore, repeating the daily verification process during the testing sequence is recommended to insure that they are working properly. 3.5 Hardness testing at a specific location on a part may not represent the physical characteristics of the whole part or end product.