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Grade SKH 2
Corresponding Standard JIS G 4403-2005
High speed tool steels
Classification Tool Steel
SKH 2 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu W V
Minimum Value 0.73 - - - - 3.8 - 17.2 1
Maximum Value 0.83 0.45 0.4 0.03 0.03 4.5 0.25 18.7 1.2
SKH 2 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Bar, forging Annealing ≤269
Bar, forging Quenching + Tempering HRC
≥63
1 Approximate Comparison Table High-Speed Tool Steels
Japan International Organization for Standardization Germany European Standard
JIS ISO DIN EN/DIN W-Nr. EN Numerical Grade
SKH2 HS18-0-1 HS18-0-1 1.3355 HS18-0-1 1.3355
2 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 SS14 BS EN/BS
W18Cr4V SKH
SKH2 		T1 HS18-0-1 HS18-0-1 Z80WCV18-04-01 HS18-0-1 1.3355 R18 2750 BT1
3 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
W18Cr4V SKH2 SKH2 T1 HS18-0-1 S18-0-1 BT1
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
W18Cr4V T51841 SKH 2 SKH 2 SKH 2 T1 T12001 HS 18-0-1 S 18-0-1 1.3355 HS 18-0-1 Р18 2750 HS 18-0-1
BT1
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 W-Nr. NF EN/NF EN Numerical Grade GOST SS14 BS EN/BS
W18Cr4V SKH2 SKH2 T1 T12001 HS18-0-1
S18-0-1
X75WCrV18-4-1 		1.3355 18-04-01
HS18-0-1
Z80WCV
Z80WCV18-04-01 		HS18-0-1
HSv18-0-1
X75WCrV18-4-1 		1.3355 Р18
R18 		2750 3355
BT1
SKH2 Corresponding Standards(Same grade name, different standards)
1 YJT
SKH2 1.3355（VDEh） SKH2（JIS） T1
2 JIS G 4403-2005
SKH 2
3 JIS G 4403-2022
SKH 2

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