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34CrMo4 | 1.7220 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Successor VDA 231-106 classification
1.7220 (DIN EN 10250-3 : 1999-12) 34CrMo4 1.7220 DIN EN 10250-3 : 1999-12 DIN EN 10250-3 : 1999-12 replaced by DIN EN 10250-3 : 2022-07 Replaced Germany 34CrMo4 1.1.1 1)
1) Remark: Steel 34CrMo4 is suitable for parts of high strength and ductility requirements and mean and higher heat-treatment sections (also large forged parts) in vehicle, engine and machine engineering (e.g. shafts, gear wheels, steering knuckles). The steel shows a high specific resistance to static and dynamic load.

Chemical Composition

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

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Direction Tensile Strength [MPa] Yield Strength [MPa] Elongation A [%]
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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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Toughness Data (Impact)

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Shape Specimen Direction Notch Impact Energy [J]
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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]
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Fracture Toughness

Temperature [°C] Yield Strength [MPa] Plane-Strain Fracture Toughness KIc [MPa*m^½]
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Heat Treatment

Heat Treatment Step Temperature [°C] Medium
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Cross Reference

Material Name Country Standard
35CrMo China GB/T 3077 1)
A30352 China GB/T 3077 1)
34 CrMo 4 Germany SEW 550
34CrMo4 Europe EN 10250-3
SCM432 Japan JIS G 4053 1)
SCM435 Japan JIS G 4053 1)
SCM432 South Korea KS D 3867 1)
SCM435 South Korea KS D 3867 1)
A521 Grade 4135 USA ASTM A521 2)
A711 Grade 4135 USA ASTM A711 2)
4135 USA SAE 2)
G41350 USA UNS 2)
1) Source: Stahlschlüssel 2016, 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
34CrMo4 Salzgitter Flachstahl GmbH, Salzgitter
34CrMo4 Saarstahl AG, Völklingen
34CrMo4 Georgsmarienhütte GmbH, Georgsmarienhütte
34CrMo4 Buderus Edelstahl GmbH, Wetzlar
34CrMo4 Swiss Steel International GmbH, Düsseldorf
34CrMo4 BGH Edelstahl Siegen GmbH
34CrMo4 Dörrenberg Edelstahl GmbH, Engelskirchen
34CrMo4 Platestahl Umformtechnik GmbH, Lüdenscheid
34CrMo4 Hermann Stahlschmidt Stahlgesellschaft m. b. H., Willich
34CrMo4 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
34CrMo4 Schmiedewerke Gröditz GmbH, Gröditz
34CrMo4 H. Kleineberg GmbH, Stelle
34CrMo4 voestalpine AG, Linz
34CrMo4 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
34CrMo4 INTERSTAHL Service GmbH, Wetter
34CrMo4 Tata Steel, IJmuiden
34CrMo4 Rosswag GmbH, Pfinztal-Kleinsteinbach
34CrMo4 Imet Industriemetall Handelsgesellschaft mbH, Hamburg
34CrMo4 Eisen-Heinzl GmbH, Selb-Erkersreuth
34CrMo4 pauly STAHLHANDEL, Essen
34CrMo4 Quick Metall GmbH, Forst