GB/T 231.1-2018 Translated English of Chinese Standard. (GBT 231.1-2018, GB/T231.1-2018, GBT231.1-2018): Metallic materials - Brinell hardness test - Part 1: Test methodhttps://www.chinesestandard.net, 23. 12. 2018 - 24 strán (strany) This Part of GB/T 231 specifies the principle, symbols and descriptions, test apparatus, test piece, test procedure, uncertainty of the results and test report of the Brinell hardness test for metallic materials. This Part applies to both fixed location Brinell hardness testers and portable Brinell hardness testers. For the Brinell hardness test for special materials or products, it may refer to GB/T 9097 and this Part. |
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150 Verification regulation accordance with GB/T according to formula according to GB/T alloys automatic measuring system Brinell hardness test Brinell hardness value calculated according calibration value Carbide ball diameter certified reference material Clause diameter Material Brinell diameter of indentation expanded uncertainty force-ball square diameter given in GB/T given in Table hardness index HBW hardness measurement hardness reference blocks hardness scales Hardness symbol hardness tester’s calibration Indentation diameter measuring indentation lies international standard mean indentation diameter measurement result Metallic materials method M1 Normative references optical measurement permissible error limits piece in relation piece Mean diameter primary standard hardness ratio of indentation reference to JJG REPLACE ISO Sintered specified square diameter index standard hardness tester Symbols and descriptions systematic error Table A.1 Table C.1 Table C.2 test bench test force duration Test force-ball square Test method test report test result Ucorr Umpe value of CRM Verification and calibration verification Direct verification