W6Mo5Cr4V3 T66543 - GB /T 9943-2008

Grade	W6Mo5Cr4V3
China ISC	T66543
Corresponding Standard	GB /T 9943-2008 High-Speed Tool Steels
Classification	Tool Steel

W6Mo5Cr4V3 Chemical Element Composition Content (%)

Component	C	Si ^①	Mn	P	S ^②	Cr	Ni ^③	Cu ^③	Mo	W	V
Minimum Value	1.15	0.2	0.15	-	-	3.8	-	-	4.7	5.9	2.7
Maximum Value	1.25	0.45	0.4	0.03	0.03	4.5	0.3	0.25	5.2	6.7	3.2

① The lower limit of silicon content in electro-slag steel is not specified.
② Upon the request of the buyer, to improve the machinability of the steel, the sulfur content may be specified as 0.06% to 0.15%.
③ Cu and Ni are residual contents.

W6Mo5Cr4V3 Mechanical Properties

condition	Hardness HBW
Delivery condition	≤262
sample	HRC ≥64

Notes:
① When the tempering temperature is 550 to 570°C, temper twice, each time for 1 hour; when the tempering temperature is 540 to 560°C, temper twice, each time for 2 hours; when the tempering temperature is 530 to 550°C, temper three times, each time for 2 hours.
② For annealed and cold-drawn condition, the hardness may be allowed to increase by 50 HBW over the annealed condition.

1 Approximate Comparison Table High-Speed Steel 1

China	Japan	United States	International Organization for Standardization	Germany	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	BS EN/BS
W6Mo5Cr4V3	SK H52	M3-1	HS6-5-3	S6-5-3	BM3

2 Approximate Comparison Table High-Speed Steel 2

China		Taiwan, China	Japan	South Korea	United States		Russia
GB	ISC	CNS	JIS	KS	ASTM	UNS	GOST
W6Mo5Cr4V3	T66543	SKH52	SKH52	SKH52	M3 Class 1	T11313	Р6М5Ф3

W6Mo5Cr4V3 Corresponding Standards(Same grade name, different standards)

1	GB /T 9943-2008
	W6Mo5Cr4V3 T66543
2	GB 9943-1988
	W6Mo5Cr4V3

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!