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Grade SKH 2
Corresponding Standard JIS G 4403-2022
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
sample Quenching + Tempering HV: 772
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
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
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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