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1 范围本国际标准规定了金属材料的表面洛氏硬度试验方法(标尺和使用范围按表1)。对每一标尺的使用范围和试验力是依照试件或表面试验层的硬度和厚度,并由附录A给出标尺选择指南。2 引用标准通过本文的引用,下列标准包含的一些条款成为本国际标准的条款。在出版时,所表明的版本是有效的,所有标准都得提交修改,以及各方以本国际标准为原础协调一致。这便于鼓励研究使用以下标准最新版本的可能性。IEC和ISO成员均得维护注册的
1 Scope This International Standard specifies the surface Rockwell hardness test method of metal materials (scale and use of Table 1). The scope of use and test force for each scale is based on the hardness and thickness of the test specimen or surface test layer and a guide to gauge selection given in Appendix A. 2 REFERENCE CRITERIA By reference in this document, the following standards contain provisions that become provisions of this International Standard. At the time of publication, the version indicated was valid, all the standards were submitted for revision, and all parties were harmonized on the basis of this International Standard. This facilitates encouraging the possibility of using the latest version of the following standards. IEC and ISO members have to maintain the registration