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Grade HS 6-5-2-5
Germany W-Nr. 1.3243
Corresponding Standard DIN EN ISO 4957-2018
Tool steels
Classification Alloy Steel
Density 8.2 g/cm3
HS 6-5-2-5 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo W V Co
Minimum Value 0.87 - - - - 3.8 4.7 5.9 1.7 4.5
Maximum Value 0.95 0.45 0.4 0.03 0.03 4.5 5.2 6.7 2.1 5
• Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat . All reasonable precautions shall be taken to prevent the addition from scrap or other material used in the manufacture, of such elements which affect the hardenability, mechanical properties and applicability.
HS 6-5-2-5 Mechanical Properties
Hardness
HBW
Softening Annealed ≤269
Quenching and Tempering HRC
≥64
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
SKH55 HS6-5-2-5 HS6-5-2-5
(S 6-5-2-5) 		1.3243 HS6-5-2-5 1.3243
2 Approximate Comparison Table High-speed tool steels
China Japan South Korea International Organization for Standardization Germany
GB JIS KS ISO DIN EN/DIN
W6Mo5Cr4V2Co5 SKH55 SKH55 HS6-5-2-5 HS6-5-2-5
3 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
W6Mo5Cr4V2Co5 T76545 SKH55 SKH55 SKH55 M36 T11336 HS 6-5-2-5 S 6-5-2-5 1.3243 HS 6-5-2-5 Р6М5К5 2723 HS 6-5-2-5
4 Approximate Comparison Table
China Japan South Korea United States Germany France European Standard Russia Sweden United Kingdom
GB JIS KS UNS DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS14 BS EN/BS
W6Mo5Cr4V2Co5 SKH55 SKH55 T11341 S 6-5-2-5
HS 6-5-2-5
S 6-5-2-5S 		1.3243 06-05-05-04-02
HS 6-5-2-5
HS 6-5-2-5HC
HS 6-5-2HC
Z85WDKCV
Z90WDKCV 		HS 6-5-2-5 1.3243 Р6М5К5
R6M5K5 		2723
2733 		3243
BM35
HS6-5-2-5 Corresponding Standards(Same grade name, different standards)
1 DIN EN ISO 4957-2018
HS 6-5-2-5 1.3243
2 ISO 4957-2018
HS 6-5-2-5 1.3243

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