GB/T 13925-2025: Metallographic test method for high manganese cast steel

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Scope

This document specifies the metallographic sampling methods and microstructure, as well as
the basis for evaluating the carbide content, grain size and non-metallic inclusion grade of high
manganese cast steel.
This document applies to the metallographic test of water-toughened austenitic manganese steel
castings, except for medium manganese steel ZG120Mn7Mo, as specified in GB/T 5680.The
metallographic test of other water-toughened high manganese cast steel may take this as a
reference.

Basic Data

Standard ID	GB/T 13925-2025 (GB/T13925-2025)
Description (Translated English)	Metallographic test method for high manganese cast steel
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J31
Classification of International Standard	77.040.01
Word Count Estimation	14,161
Date of Issue	2025-06-30
Date of Implementation	2026-01-01
Older Standard (superseded by this standard)	GB/T 13925-2010
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration