GB/T 42670-2023: Test method for Rockwell hardness of carbon materials

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Scope

This document describes the principle, instrument and equipment, specimens, test procedures,
precision and test report of the test method for Rockwell hardness of carbon materials.
This document is applicable to the determination of Rockwell hardness of carbon materials with
aggregate particles less than 0.8 mm. Other carbon materials may take this as a reference.

Basic Data

Standard ID	GB/T 42670-2023 (GB/T42670-2023)
Description (Translated English)	Test method for Rockwell hardness of carbon materials
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Q52
Classification of International Standard	29.050
Word Count Estimation	10,143
Date of Issue	2023-08-06
Date of Implementation	2024-03-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration