GB/T 21838.2-2022
Metallic materials—Instrumented indentation test for hardness and materials parameters—Part 2: Verification and calibration of testing machines (English Version)

Standard No.

GB/T 21838.2-2022

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 21838.2-2022

Replace

GB/T 21838.2-2008

Scope

This document specifies the inspection and calibration methods for testing machines used for instrumented indentation tests in accordance with GB/T21838.1-2019. This document describes the direct test method for checking the main function of the testing machine and the indirect test method suitable for determining the repeatability of the testing machine. In addition to the direct inspection method, the indirect inspection method is also used for the routine periodic inspection of the testing machine in use. The indirect inspection of the testing machine shall be carried out separately for each test method. This document also applies to portable testing machines.

GB/T 21838.2-2022 Referenced Document

• GB/T 21838.1-2019 Metallic materials—Instrumented indentation test for hardness and materials parameters—Part 1:Test method
• ISO 14577-3 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 3: Calibration of reference blocks
• ISO 376 Metallic materials - Calibration of force-proving instruments used for the verification of uniaxial testing machines
• ISO 3878 Hardmetals; Vickers hardness test

GB/T 21838.2-2022 history

• 2022 GB/T 21838.2-2022 Metallic materials—Instrumented indentation test for hardness and materials parameters—Part 2: Verification and calibration of testing machines
• 2008 GB/T 21838.2-2008 Metallic materials. Instrumented indentation test for hardness and materials parameters. Part 2: Verification and calibration of testing machines

GB/T 21838.2-2022 -All Parts