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C45 | 1.0503 Material Datasheet

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Material Description

Material Number Material Number (single) Standard Scope Standard Status Country Predecessor VDA 231-106 classification
1.0503 (DIN EN ISO 683-7 : 2025-02) 1.0503 DIN EN ISO 683-7 : 2025-02 Supersedes DIN EN 10277 : 2018-09 Valid Germany C45 1.1 1)
1) Remark: The non-alloy quality steel is used as levelled and bright steel sheared to length in the drawn, peeled or grinded condition for general technical use.

Chemical Composition

C [%] Cr [%] Cu [%] Mn [%] Mo [%] Ni [%] P [%] S [%] Si [%] Cr+Mo+Ni [%]
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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 A [%] Hardness HB | HBW
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Physical Properties

Temperature [°C] Density [g/cm³] Young's Modulus [GPa] Shear Modulus [GPa] Poisson's Ratio 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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Cross Reference

Material Name Country Standard
1045 Australia AS 1443 1)
45 China GB/T 699 2)
U20452 China ISC 1)
C45 Europe EN ISO 683-7
C40 India IS 7226 1)
C45 International ISO 683-7
S45C Japan JIS G 3311 2)
45 Russia GOST 1050 1)
45 Russia ГОСТ 1050 1)
A108 Grade 1045 USA ASTM A108 3)
1045 USA SAE 3)
G10450 USA UNS 3)
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
2) Source: EN ISO 683-7:2024-10
3) Source: SAE HS-1086, ASTM DS56M, Metals & Alloys in the Unified Numbering System, 14th Edition, SAE International, 2023

Producer/Supplier/Trade names

Tradename Supplier
C45 Andernach & Bleck GmbH & Co. KG, Hagen
C45 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
C45 KSM Stahl GmbH, Empfingen
C45 LSV Lech-Stahl Veredelung GmbH, Landsberg am Lech
C45 Swiss Steel AG, Emmenbrücke
C45 ThyssenKrupp Schulte GmbH, Essen

FKM Guideline Fatigue Strength

Semi-finished Product Condition Nominal Size [mm] Tensile Strength [MPa] Yield Strength [MPa] Fatigue Limit under rev. Tension-Compression Stresses [MPa] Fatigue Strength under pulsating Tensile Stresses [MPa] Bending Fatigue Strength [MPa] Shear Fatigue Strength [MPa] Torsion Fatigue Strength [MPa] Constant a for size factor Kd for yield stress Rp Constant a for size factor Kd for tensile strength Rm
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