GB/T 25744-2010: Metallographic examination for carburizing quenching and tempering of steel parts

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Scope

This standard specifies the method for the inspection of the carburizing
quenching and tempering metallographic structure of steel parts, the level of
the metallographic structure, the determination of the effective depth of
hardened layer of the carburizing quenching.
This standard is applicable to workpieces, whose effective hardened layer
depth is greater than 0.3 mm by carburizing quenching.

Basic Data

Standard ID	GB/T 25744-2010 (GB/T25744-2010)
Description (Translated English)	Metallographic examination for carburizing quenching and tempering of steel parts
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J36
Classification of International Standard	25.200
Word Count Estimation	21,222
Date of Issue	2010-12-23
Date of Implementation	2011-06-01
Quoted Standard	GB/T 7232; GB/T 9450; GB/T 13298
Regulation (derived from)	National Standard Approval Announcement 2010 No.10 (Total No.165)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the test carburizing quenching and tempering of steel microstructure, microstructure level and carburizing effective hardened layer depth determination. This standard applies to steel carburizing effective hardened layer depth greater than 0. 3 mm of the workpiece.