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Home Material GB /T 9943-2008
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Grade CW6Mo5Cr4V3
China ISC T66545
Corresponding Standard GB /T 9943-2008
High-Speed Tool Steels
Classification Tool Steel
CW6Mo5Cr4V3 Chemical Element Composition Content (%)
Component C Si ① Mn P S ② Cr Ni ③ Cu ③ Mo W V
Minimum Value 1.25 - 0.15 - - 3.75 - - 4.7 5.9 2.7
Maximum Value 1.32 0.7 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.
CW6Mo5Cr4V3 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Delivery condition Annealing ≤262
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.
1 Approximate Comparison Table High-Speed Tool Steels
China Japan South Korea United States International Organization for Standardization Germany
GB JIS KS ASTM/AISI ISO DIN EN/DIN
CW6Mo5Cr4V3 SKH53 SKH53 M3 HS6-5-3 HS6-5-3
2 Approximate Comparison Table High-Speed Steel 1
China Japan United States Germany
GB JIS ASTM DIN EN/DIN W-Nr.
CW6Mo5Cr4V3 SK H53 M3-2 S6-5-3 1.3344
3 Approximate Comparison Table High-Speed Steel 2
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF SS14 BS EN/BS
CW6Mo5Cr4V3 T66545 SKH53 SKH53 SKH53 M3 Class 2 T11323 HS 6-5-3 S 6-5-3 1.3344 HS 6-5-3 2725 HS 6-5-3
4 Approximate Comparison Table High-Speed Steel 3
China Japan United States International Organization for Standardization European Standard Russia
GB ISC JIS ASTM UNS ISO EN GOST
CW6Mo5Cr4V3 T66545 SKH53 M3(高碳) T11323 HS 6-5-3C HS 6-5-3C Р6М5Ф3
CW6Mo5Cr4V3 Corresponding Standards(Same grade name, different standards)
1 GB /T 9943-2008
CW6Mo5Cr4V3 T66545
2 GB 9943-1988
CW6Mo5Cr4V3

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