GB/T 231.2-2022
Metallic materials—Brinell hardness test—Part 2: Verification and calibration of testing machines (English Version)

Standard No.

GB/T 231.2-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 231.2-2022

Replace

GB/T 231.2-2012

Scope

This document specifies the direct inspection and indirect inspection methods of the Brinell hardness tester (hereinafter referred to as the hardness tester) used to determine the Brinell hardness according to GB/T231.1, and specifies the inspection cycle for the two methods of inspection of the hardness tester. The direct inspection includes checking whether the performance parameters of the tested hardness tester are within the specified limits, while the indirect inspection uses the standard hardness block calibrated according to GB/T231.3 for hardness measurement to check the comprehensive performance of the hardness tester. If the hardness tester is also used for hardness testing by other methods, it is necessary to test the hardness tester separately according to each method. This document applies to both permanently installed hardness testers and portable hardness testers. For durometers that cannot comply with the specified force/time configuration, Appendix B gives a direct inspection procedure for the modification of the force and test cycle time of the durometer.

GB/T 231.2-2022 Referenced Document

• GB/T 13634 Metallic materials—Calibration of force-proving instruments used for the verification of uniaxial testing machines
• GB/T 231.1 Metallic materials—Brinell hardness test—Part 1: Test method
• GB/T 231.3 Metallic materials—Brinell hardness test—Part 3:Calibration of reference blocks
• GB/T 36416.1 Testing machine vocabulary.Part 1:Material testing machines
• GB/T 4340.1 Metallic materials.Vickers hardness test.Part 1:Test method

GB/T 231.2-2022 history

• 2022 GB/T 231.2-2022 Metallic materials—Brinell hardness test—Part 2: Verification and calibration of testing machines
• 2012 GB/T 231.2-2012 Metallic materials.Brinell hardness test.Part 2:Verification and calibration of testing machines
• 2002 GB/T 231.2-2002 Metallic brinell hardness test--Part 2: Verification and calibration of hardness testers

GB/T 231.2-2022 -All Parts