GB/T 231.3-2022: Metallic materials - Brinell hardness test - Part 3: Calibration of reference blocks

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Scope

This document specifies a method for the calibration of reference blocks to be used in
the indirect verification of Brinell hardness testing machines as described in GB/T
231.2 and for the calibration of reference blocks to be used in the regular verification
as described in GB/T 231.1. The procedures necessary to ensure metrological
traceability of the calibration machine are also specified.
This Standard applies to the calibration of reference Brinell hardness blocks (hereinafter
referred to as “reference blocks”).

Basic Data

Standard ID	GB/T 231.3-2022 (GB/T231.3-2022)
Description (Translated English)	Metallic materials - Brinell hardness test - Part 3: Calibration of reference blocks
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	N71
Word Count Estimation	13,129
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration