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 method
https://www.chinesestandard.net, Dec 23, 2018 - Technology & Engineering - 24 pages
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.
accordance with GB/T according to formula according to GB/T alloys automatic measuring system Brinell hardness test Brinell hardness value calculated according Calibration laboratory level calibration value certified reference material Clause diameter Material Brinell diameter of indentation Direct verification Direct 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 passes hardness tester’s calibration Indentation diameter measuring indentation lies international standard JJG 150 Verification mean indentation diameter measurement result metal Brinell hardness Metallic materials method M2 Normative references optical measurement piece in relation primary standard hardness ratio of indentation reference blocks Primary reference to JJG REPLACE ISO Sintered specified square diameter index square diameter Material standard hardness tester Standard uncertainty due Symbols and descriptions systematic error Table C.1 test bench Test force-ball square Test method test report test result Ucorr Umpe Verification and calibration verification Direct verification