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HS6-5-2-5 | 1.3243 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Predecessor VDA 231-106 classification Application temperature [°C]
1.3243 (DIN EN ISO 4957 : 2018-11) HS6-5-2-5 1.3243 DIN EN ISO 4957 : 2018-11 Supersedes DIN EN ISO 4957 : 2001-02 Valid Germany HS6-5-2-5 1.1.2 ≤ 600 1)
1) Remark: Very ductile wear resistant tungsten-molybdenum-cobalt-based high-speed steel with high red hardness and tempering resistance. Application: all kinds of cutters esp. tunnel cutters, roll tools. High-loaded twist drills and screw taps, shape rollers, broaches.

Chemical Composition

C [%] Co [%] Cr [%] Mn [%] Mo [%] P [%] S [%] Si [%] V [%] W [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Condition Temperature [°C] Hardness HB | HBW Hardness HRC
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Physical Properties

Temperature [°C] Density [g/cm³] Young's Modulus [GPa] Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] Differential Coefficient of Thermal Expansion [10^-6*K^-1] Thermal Conductivity [W/(m*K)] Specific Electrical Resistance [µΩm]
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Heat Treatment

Heat Treatment Step Temperature [°C]
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Cross Reference

Material Name Country Standard
W6Mo5Cr4V2Co5 China GB/T 9943 1)
T76545 China GB/T 9943 1)
HS6-5-2-5 Europe EN ISO 4957
XT90W6Co5Mo5Cr4V2 India IS 1570 : Part 6 1)
THS8 India IS 1570 : Part 6 1)
HS 6-5-2-5 International ISO 4957
SKH55 Japan JIS G 4403 2)
SKH55 South Korea KS D 3522 1)
R6M5K5 Russia GOST 19265 1)
Р6M5К5 Russia ГОСТ 19265 1)
A600 Type M36 USA ASTM A600 3)
M36 USA AISI 3)
T11336 USA UNS 3)
S 6-5-2-5 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
2) Source: EN ISO 4957 : 2018-07
3) Source: Metals & Alloys in the Unified Numbering System, SAE/ASTM, 11th Edition, 2008

Producer/Supplier/Trade names

Tradename Supplier
BGH 3243 BGH Edelstahl Siegen GmbH 1)
S705 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf 1)
Rapidur 3243 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Siegen 1)
EMo5Co5 Dörrenberg Edelstahl GmbH, Engelskirchen 1)
EM35 ERASTEEL GmbH, Hilden 1)
Rasant Mo5Co Hagenkötter GmbH & Co., Solingen 1)
Presto 3243 Remystahl GmbH & Co. KG, Hagen 1)
Garant EMO Willy Haecker GmbH, Hückeswagen 1)
Co5Mo W.S.M. Werkzeugstahl Handelsgesellschaft mbH & Co. KG, Meinerzhagen 1)
BM55K ZAPP AG, Ratingen 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach