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Grade S 6-5-3
Germany W-Nr. 1.3344
Corresponding Standard DIN 17350-1980
Tool steels; technical terms of delivery
Classification Alloy Steel
S 6-5-3 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo W V
Minimum Value 1.17 - - - - 3.8 4.7 6 2.7
Maximum Value 1.27 0.45 0.4 0.03 0.03 4.5 5.2 6.7 3.2
S 6-5-3 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Steel Softening Annealing 240~300
Steel Quenching and Tempering ≥65HRC；≥880HV
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17350-1980
Grade
Germany W-Nr.
DIN EN ISO 4957-2018
Grade
Germany W-Nr.
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
SKH53 HS6-5-3 HS6-5-3 1.3344 HS6-5-3 1.3344
2 Approximate Comparison Table High-speed tool steels
Japan United States International Organization for Standardization Germany France
JIS ASTM/AISI ISO DIN EN/DIN NF EN/NF
SKH53 M3-2 HS6-5-3 S6-5-3 HS6-5-3
3 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany United Kingdom
GB JIS ASTM ISO DIN EN/DIN BS EN/BS
W6Mo5Cr4V3 SK H52 M3-1 HS6-5-3 S6-5-3 BM3
4 Approximate Comparison Table
China Japan United States Germany
GB JIS ASTM DIN EN/DIN W-Nr.
CW6Mo5Cr4V3 SK H53 M3-2 S6-5-3 1.3344
5 Approximate Comparison Table
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
CW6Mo5Cr4V3 T66545 SKH53 SKH53 SKH53 M3 Class 2 T11323 HS 6-5-3 S 6-5-3 1.3344 HS 6-5-3 2725 HS 6-5-3

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