GB/T 9450-2025: Determination of the case hardening depth for steel

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Scope

This Document specifies the principles, test equipment, specimens, determination methods,
result evaluation, and test report of the case hardening depth for steel.
This Document applies to workpieces that have been carburized or carbonitrided and then
quenched, tempered and heat treated.

Basic Data

Standard ID	GB/T 9450-2025 (GB/T9450-2025)
Description (Translated English)	Determination of the case hardening depth for steel
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J36
Classification of International Standard	25.200
Word Count Estimation	14,171
Date of Issue	2025-08-29
Date of Implementation	2026-03-01
Older Standard (superseded by this standard)	GB/T 9450-2005
Issuing agency(ies)	State Administration for Market Regulation, National Standardization Administration