GB/T 230.2-2022: Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters

Delivery: 9 seconds. Download (and Email) true-PDF + Invoice.
Get Quotation: Click GB/T 230.2-2022 (Self-service in 1-minute)
Newer / historical versions: GB/T 230.2-2022

Preview True-PDF

Scope

This document specifies two inspection methods (direct inspection and indirect
inspection) of the Rockwell durometer, for determining the Rockwell hardness,
according to GB/T 230.1; specifies the inspection method of the Rockwell hardness
indenter.
The direct test method is suitable for checking whether the main parameters related to
the function of the durometer are within the specified tolerances, such as test force,
depth measurement, test cycle time. The indirect test method is suitable for using a set
of calibrated reference blocks, to determine the performance of the durometer, when
measuring materials with known hardness.
The indirect test method can be used alone for regular routine inspections, using
medium durometers.
If the durometer can also be used for the hardness test of other hardness test methods,
the durometer shall be tested separately, according to each method.
This document applies to both stationary durometers and portable durometers.
Note that tungsten carbide alloy ball indenters have been considered as Rockwell
hardness standard ball indenters. The steel ball indenter is limited to use, under the
conditions of Appendix A in GB/T 230.1-2018.

Basic Data

Standard ID	GB/T 230.2-2022 (GB/T230.2-2022)
Description (Translated English)	Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	N71
Word Count Estimation	26,229
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration