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Home Material GB 9943-1988
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Grade W18Cr4V2Co 8
Corresponding Standard GB 9943-1988
High Speed Tool Steel Bars-Technical Requirement
Classification Tool Steel
W18Cr4V2Co 8 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo W V Co
Minimum Value 0.75 0.2 0.2 - - 3.75 - - 0.5 17.5 1.8 7
Maximum Value 0.85 0.4 0.4 0.03 0.03 5 0.3 0.25 1.25 19 2.4 9.5
W18Cr4V2Co 8 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Delivery condition Annealing ≤285
Delivery condition Other Processing Methods ≤302
sample Quenching and Tempering HRC
≥63
1 Approximate Comparison Table High-Speed Steel 2
China Taiwan, China Japan South Korea United States Germany France Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr. NF EN/NF SS14 BS EN/BS
W18Cr4V2Co8 T71848 ≈SKH 4 ≈SKH 4 ≈SKH 4 T5 T12005 ≈S 18-1-2 1.3265 HS 18-0-2-9 2756 BT5
2 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 W-Nr. BS EN/BS
W18Cr4V2Co8 SKH4A T5 HS18-0-1-10 S18-1-2-10 1.3265 BT5

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