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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 Predecessor VDA 231-106 classification
1.7220 (DIN EN 10250-3 : 2022-07) 34CrMo4 1.7220 DIN EN 10250-3 : 2022-07 Supersedes DIN EN 10250-3 : 1999-12 Valid Germany 34CrMo4 1.1.1 1)
1) Remark: Alloy steel for open-die forgings, forged bars and products pre-forged and finished in ring mills and supplied in the quenched and tempered condition for general engineering purposes.

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

Condition Temperature [°C] 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)
A291 Grade 4135 USA ASTM A29 2)
A434 Grade 4135 USA ASTM A434 2)
4135 USA SAE 2)
G41350 USA UNS 2)
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
F 65 Aubert&Duval Special Steel GmbH, Mönchengladbach 1)
1.7220 Fritz Baumann GmbH & Co. KG, Güglingen 1)
BGH 7220 BGH Edelstahl Siegen GmbH 1)
34CrMo4 Buderus Edelstahl GmbH, Wetzlar 1)
Aerodur 7220 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten 1)
Firmodur 7220 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten 1)
34CrMo4 DIROSTAHL, Remscheid 1)
DE 7220 Dörrenberg Edelstahl GmbH, Engelskirchen 1)
34CrMo4 Edelstahlwerk C. & F. vom Brocke e.K., Altena-Altroggenrahmede 1)
1.7220.00 Edelstahlwerk W. Ossenberg & Cie. GmbH, Altena 1)
34CrMo4 Hammerwerk Erft, G. Diederichs GmbH & Co. KG, Bad Münstereifel-Arloff 1)
34CrMo4 Hermann Stahlschmidt Stahlgesellschaft m. b. H., Willich 1)
1.7220 Chr. Höver & Sohn GmbH & Co KG, Lindlar 1)
1.7220 INTERSTAHL Service GmbH, Wetter 1)
1.7220 IMBACH & CIE AG, Nebikon 1)
1.7220 Rosswag GmbH, Pfinztal-Kleinsteinbach 1)
1.7220 Platestahl Umformtechnik GmbH, Lüdenscheid 1)
34CrMo4 Schmiedewerke Gröditz GmbH, Gröditz 1)
BÖHLER V330 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf 1)
V330 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf 1)
1.7220 von Schaewen AG, Essen 1)
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach