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Home Material DIN 17350-1980
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Grade S18-1-2-5
Germany W-Nr. 1.3255
Corresponding Standard DIN 17350-1980
Tool steels; technical terms of delivery
Classification Tool Steel
S18-1-2-5 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo W V Co
Minimum Value 0.75 - - - - 3.8 0.5 17.5 1.4 4.5
Maximum Value 0.83 0.45 0.4 0.03 0.03 4.5 0.8 18.5 1.7 5
S18-1-2-5 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Steel Softening Annealing 240~300
Steel Quenching + Tempering ≥64HRC；≥850HV
1 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
W18Cr4VCo5 SKH3 SKH3 T4 HS18-1-1-5 S18-1-2-5 T4
2 Approximate Comparison Table High-Speed Steel 2
China Taiwan, China Japan South Korea United States Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr. NF EN/NF GOST SS14 BS EN/BS
W18Cr4VCo5 T71845 SKH 3 SKH 3 SKH 3 T4 T12004 S 18-1-2-5 1.3255 HS 18-1-2-5 ≈Р18К5Ф2 254 HS 18-1-2-5
BT4

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