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Grade HS 2-9-1-8
ISO Numeric Designation 1.3247
Corresponding Standard ISO 4957-2018
Tool steels
Classification Alloy Steel
Density 7.85 g/cm3
HS 2-9-1-8 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo W V Co
Minimum Value 1.05 - - - - 3.5 9 1.2 0.9 7.5
Maximum Value 1.15 0.7 0.4 0.03 0.03 4.5 10 1.9 1.3 8.5
HS 2-9-1-8 Mechanical Properties
Hardness
HBW
Softening Annealed ≤277
Quenching and Tempering HRC
≥66
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
SKH59 HS2-9-1-8
(S 2-10-1-8) 		HS2-9-1-8 1.3247 HS2-9-1-8 1.3247
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/AISI ISO DIN EN/DIN BS EN/BS
W2Mo9Cr4VCo8 SKH59 SKH59 M42 HS2-9-1-8 S2-10-1-8 BM42
3 Approximate Comparison Table High-Speed Steel 1
China Japan United States International Organization for Standardization Germany France United Kingdom
GB JIS ASTM ISO DIN EN/DIN W-Nr. NF EN/NF BS EN/BS
W2Mo9Cr4VCo8 YXM34 M33
M34 		HS2-9-1-8 S2-9-2-8 1.3249 Z110DKCWV09-08-04-02-01 BM34
4 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
W2Mo9Cr4VCo8 T72948 SKH59 SKH59 SKH59 M42 T11342 HS 2-9-1-8 S 2-10-1-8 1.3247 HS 2-9-1-8 2716 HS 2-9-1-8
BM42
5 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
W2Mo9Cr4VCo8 T72948 SKH59 M42 T11342 HS 2-9-1-8 HS 2-9-1-8 Р2АМ9К5
HS2-9-1-8 Corresponding Standards(Same grade name, different standards)
1 DIN EN ISO 4957-2018
HS 2-9-1-8 1.3247
2 ISO 4957-2018
HS 2-9-1-8 1.3247

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