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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Predecessor VDA 231-106 classification
1.1248 (DIN EN 10132 : 2022-04) C75S 1.1248 DIN EN 10132 : 2022-04 Supersedes DIN EN 10132 : 2021-11 Valid Germany C75S 1.1.1 1)
1) Remark: The steel C75S is used as cold rolled strip for springs and special applications in thicknesses of up to 6 mm and as tempered cold strip in thicknesses from 0.30 to 3.00 mm. The cold-rolled steel strip for springs possess a very high precision of measurements and very good state of the surface.

Chemical Composition

C [%] Cr [%] Cu [%] Mn [%] Mo [%] Ni [%] P [%] S [%] Si [%] Cr+Mo+Ni [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A80 [%] Hardness HRB Hardness HRC Hardness HV
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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)] Thermal Diffusivity [10^-6 m²/s] Specific Electrical Resistance [µΩm] Mean Specific Heat Capacity [kJ/(kg*K)] True Specific Heat Capacity [kJ/(kg*K)]
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Heat Treatment

Heat Treatment Temperature [°C] Medium
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Cross Reference

Material Name Country Standard
75 China GB/T 699 1)
U20752 China GB/T 699 1)
C75S Europe EN 10132
75C6 India IS 2507 1)
5 India IS 2507 1)
CS 75 International ISO 4960 1)
S75CM Japan JIS G 3311 1)
75 Russia GOST 14959 1)
75A Russia GOST 14959 1)
A684 Grade 1074 USA ASTM A684 2)
Grade 1074 USA ASTM A684 2)
1074 USA AISI 2)
G10740 USA ASTM A684 2)
Ck 75 Germany DIN 17222
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
2) Source: Metals & Alloys in the Unified Numbering System, SAE/ASTM, 11th Edition, 2008

Producer/Supplier/Trade names

Tradename Supplier
BE1248 BESTAR Stahlhandelgesellschaft Remscheid mbH, Remscheid 1)
Ck 75 Buderus Edelstahl GmbH, Wetzlar 1)
DE1248 Dörrenberg Edelstahl GmbH, Engelskirchen 1)
EBERLE 13 J. N. Eberle & Cie. GmbH, Augsburg 1)
C75S Flender-Stahl Handelsgesellschaft mbh & Co. KG, Sundern 1)
15LM SANDVIK Materials TEchnology Deutschland GmbH, Düsseldorf 1)
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach