中文版
Home Material GB /T 9943-2008
简体 | 繁體
Grade W6Mo5Cr4V2
China ISC T66541
Corresponding Standard GB /T 9943-2008
High-Speed Tool Steels
Classification Tool Steel
W6Mo5Cr4V2 Chemical Element Composition Content (%)
Component C Si ① Mn P S ② Cr Ni ③ Cu ③ Mo W V
Minimum Value 0.8 0.2 0.15 - - 3.8 - - 4.5 5.5 1.75
Maximum Value 0.9 0.45 0.4 0.03 0.03 4.4 0.3 0.25 5.5 6.75 2.2
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.
W6Mo5Cr4V2 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Delivery condition Annealing ≤255
sample Quenching and Tempering 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.
New and Old Grade Replacement List
Corresponding Standard Grade
GB /T 9943-2008
Grade
China ISC
GB /T 9943-2025
Grade
China ISC
1 Approximate Comparison Table High-Speed Tool Steels
China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
W6Mo5Cr4V2 SKH51 M2 HS6-5-2 HS6-5-2 Z85WDCV06-05-04-02 HS6-5-2 1.3339 R6M5
Р6М5 		2722 BM2
2 Approximate Comparison Table High-Speed Tool Steels
China Japan South Korea United States International Organization for Standardization Germany United Kingdom
GB JIS KS ASTM ISO DIN EN/DIN BS EN/BS
W6Mo5Cr4V2 SKH9
(SKH51) 		SKH9 M2 HS6-5-2 S6-5-2 BM2
3 Approximate Comparison Table High-Speed Steel 1
China Japan United States International Organization for Standardization Germany France Russia United Kingdom
GB JIS ASTM ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
W6Mo5Cr4V2 SK H51 M2(一般含碳量) HS6-5-2 S6-5-2 1.3343 Z85WDCV06-05-04-02 Р6М3 BM2
4 Approximate Comparison Table High-Speed Steel 2
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS14 BS EN/BS
W6Mo5Cr4V2 T66541 SKH 51 SKH 51 SKH 51 M2(正常C) T11302 HS 6-5-2 S 6-5-2 1.3339 HS 6-5-2 Р6М5 2722 HS 6-5-2
BM2
5 Approximate Comparison Table High-Speed Steel 4
China Japan South Korea United States Germany France European Standard Russia Sweden United Kingdom
GB JIS KS ASTM UNS DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
W6Mo5Cr4V2 SKH51 SKH51 M2 T11302 HS6-5-2
S6-5-2
S6-5-2S
SC6-5-2
X82WMoCrV6-5-4 		HS6-5-2
HS6-5-2HC
X85WMoCrV6-5-4
Z85WDCV 		HS6-5-2
HS6-5-2C 		1.3339
1.3343 		Р6М5
R6M5 		2722 3343
BM2
W6Mo5Cr4V2 Corresponding Standards(Same grade name, different standards)
1 GB /T 1299-2014
W6Mo5Cr4V2 T21830
2 GB /T 9943-2008
W6Mo5Cr4V2 T66541
3 YB /T 084-2016
W6Mo5Cr4V2
4 GB /T 3080-2001
W6Mo5Cr4V2 T66541
5 JB /T 7715-1995
W6Mo5Cr4V2
6 GB 9943-1988
W6Mo5Cr4V2
7 GB /T 9943-2025
W6Mo5Cr4V2 T33390
8 GB /T 1299-2025
W6Mo5Cr4V2 T33390

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