A Comparison Table of Different High Speed Steel (HSS) Grade Standards

by Hanjiang Wang, Diamond Tools Select

There are many standards for High Speed Steel (HSS) grades. We make the comparison table based on Chinese grades to try to tell the counterparts of a HSS grade you know in other standards.

HSS Types		Standards for HSS Grades
HSS Types		Chinese GB9943	AISI	DIN	JIS	ERASTEEL	BOHLER
General		W6Mo5Cr4V2	M2	HS6-5-2	SKH51		S601
		W6Mo5Cr4V2	M2	HS6-5-2C		EM2	S600
		W9Mo3Cr4V
		W2Mo9Cr4V2	M7	HS2-9-2	SKH58	EM7	S400
		W18Cr4V	T1	HS18-0-1	SKH2	ET1	S200
Economical		W4Mo3Cr4VSi
Economical		W3Mo2Cr4V2Si
High Performance	With Cobalt	W2Mo9Cr4VCo8	M42	HS2-9-1-8	SKH59	EM42	S500
		W6Mo5Cr4V2Co5	M35	HS6-5-2-5	SKH55	EM35	S705
		W12Cr4V5Co5	T15	HS12-1-4-5	SKH10
		(W10Mo4Cr4V3Co10)	M48	HS10-4-3-10	SKH57	WKE42	S700
	With Aluminum	W6Mo5Cr4V2Al					S620
	With Aluminum	(W9Mo3Cr4VAl)
	High Carbon & High Vanadium	W6Mo5Cr4V3	M3-2	HS6-5-3	SKH53	EM3:2	S607
		CW6Mo5Cr4V3		HS6-5-3C
		(W7Mo4Cr4V3)
		(W12MoCr4V4)				E EV4

* The grade names in brackets are not included in the Chinese standard.

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