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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 ISO 683-2 : 2018-09) 34CrMo4 1.7220 DIN EN ISO 683-2 : 2018-09 Supersedes DIN EN 10083-3 : 2007-01 Valid Germany 34CrMo4 1.1.1 1)
1) Remark: Steel 34CrMo4 is applicable for parts with high strength and high toughness requirements at mean and higher heat-treatment cross sections (also large forged parts) in vehicle manufacturing, engine and machine engineering (e.g. shafts, gear wheels, steering knuckles). The steel shows high resistivity to static and dynamic loading.

Chemical Composition

C [%] Cr [%] Cu [%] 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] Tensile Strength [MPa] Yield Strength [MPa] Elongation A [%] Reduction of Area [%] 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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Toughness Data (Impact)

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Shape Specimen Direction Notch Impact Energy [J]
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Hardenability (Jominy test)

Condition Front Distance [mm] Hardness HRC (+H grade) Hardness HRC (+HH grade) Hardness HRC (+HL grade)
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FKM Guideline Fatigue Strength

Condition Nominal Size [mm] Temperature [°C] Number of Cycles 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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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] Holding Time [h] Medium
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Cross Reference

Material Name Country Standard
35CrMo China GB/T 3077 1)
35CrMo China GB/T 4373 1)
35CrMo China GB/T 11251 1)
35CrMo China YB/T 5132 1)
A30352 China ISC 1)
34CrMo4 Germany DIN 743-3
1.7220 Europe EN 10083-3 2)
34CrMo4 Europe EN 10083-3 2)
963 India IS 963 1)
34CrMo4 Europe EN ISO 683-2
34CrMo4 International ISO 683-2
SCM435H Japan JIS G 4052 1)
35ChM Russia GOST 4543 1)
35ХM Russia ГОСТ 4543 1)
SCM435 South Korea KS D 3867 1)
A29 Grade 4135 USA ASTM A29 1)
A304 Grade 4135H USA ASTM A304 1)
A434 Grade 4135 USA ASTM A434 1)
H41350 USA UNS 1)
4135H USA SAE 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
2) Source: EN ISO 683-2 : 2018-06

Producer/Supplier/Trade names

Tradename Supplier
34CrMo4 AG der Dillinger Hüttenwerke, Dillingen
34CrMo4 ASCOMETAL GmbH, Erkrath
F 65 AUBERT & DUVAL Deutschland GmbH, München
BGH 7220 BGH Edelstahl Siegen GmbH
Buderus 34CrMo4 Buderus Edelstahl GmbH, Wetzlar
VCMo 135 BFG Feinguss Niederrhein GmbH, Moers
BÖHLER V 330 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf
34CrMo4 Tata Steel, IJmuiden
DIRO-34CrMo4 DIROSTAHL, Remscheid
SCM 435 H Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Siegen
34CrMo4 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Siegen
THYROFORT 34CrMo4 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
DE 7220 Dörrenberg Edelstahl GmbH, Engelskirchen
1.7220 ET Edelstahl-Trading GmbH, Willich
34CrMo4 EZM Edelstahlzieherei Mark GmbH, Wetter
1.7220 Rosswag GmbH, Pfinztal-Kleinsteinbach
34CrMo4 Edelstahlwerk C. & F. vom Brocke e.K., Altena-Altroggenrahmede
34CrMo4 Haage Anagramm Technologien GmbH, Mülheim a. d. Ruhr
34CrMo4 C.D. Wälzholz GmbH & Co. KG, Hagen
34CrMo4 Georgsmarienhütte GmbH, Georgsmarienhütte
1.7220 H. Kleineberg GmbH, Stelle
34CrMo4 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
34CrMo4 Hagenkötter GmbH & Co., Solingen
34CrMo4 Hammerwerk Erft, G. Diederichs GmbH & Co. KG, Bad Münstereifel-Arloff
34CrMo4 Hayes-Lemmerz-Werke GmbH, Königswinter
34CrMo4 Hermann Stahlschmidt Stahlgesellschaft m. b. H., Willich
34CrMo4 Hoesch Hohenlimburg GmbH, Hagen
1.7220 INOX SERVICE CENTER GmbH, Krefeld
1.7220 INTERSTAHL Service GmbH, Wetter
34CrMo4 Ilsenburger Grobblech GmbH, Ilsenburg
1.7220 Imet Industriemetall Handelsgesellschaft mbH, Hamburg
34CrMo4 Klöckner & Co SE, Duisburg
1.7220 SIJ MWT GmbH, Landsberg am Lech
34CrMo4 ORI MARTIN Deutschland GmbH, Duisburg
34CrMo4 OVAKO STAHL GmbH, Erkrath
1.7220 Platestahl Umformtechnik GmbH, Lüdenscheid
34CrMo4 ZAPP AG, Ratingen
34CrMo4 Swiss Steel International GmbH, Düsseldorf
34CrMo4 STM Stahl Vertriebs GmbH, Gräfelfing
34CrMo4 Saarstahl AG, Völklingen
CrMoII Björneborg Steel AB, Björneborg, Sweden
G34CrMo4 Schmiedewerke Gröditz GmbH, Gröditz
34CrMo4 Schmiedewerke Gröditz GmbH, Gröditz
34CrMo4 Stahlwerk Annahütte Max Aicher GmbH & Co. KG, Hammerau
CR 34 M Aubert&Duval Special Steel GmbH, Mönchengladbach
34CrMo4 Stahlwerk Unna GmbH & Co.KG, Unna
34CrMo4 Swiss Steel AG, Emmenbrücke
34CrMo4 ThyssenKrupp Steel Europe AG, Duisburg
34CrMo4 Vallourec Deutschland GmbH, Düsseldorf
34CrMo4 WDI - Westfälische Drahtindustrie GmbH, Hamm
34CrMo4 Walzwerke Einsal GmbH, Nachrodt
1.7220 Wilhelm Oberste-Beulmann GmbH & Co. KG, Remscheid
34CrMo4 Willy Haecker GmbH, Hückeswagen
34CrMo4 pauly STAHLHANDEL, Essen
GS-34 CrMo 4 voestalpine AG, Linz
34CrMo4 voestalpine AG, Linz

Linear-elastic

Temperature [°C] Young's modulus [GPa] Bulk modulus [GPa] Shear modulus [GPa] Poisson's ratio
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Alternating stress

Temperature [°C] Stress ratio Mean stress [MPa] Alternating stress [MPa] Cycles
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Electrical resistivity

Temperature [°C] Specific electrical resistance [µΩm]
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Coefficient thermal expansion

Related Temperature [°C] Temperature [°C] Coefficient thermal expansion [10^-6*K^-1]
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Specific heat

Temperature [°C] Specific heat [kJ/(kg*K)]
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Density

Temperature [°C] Density [g/cm³]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Thermal conductivity

Temperature [°C] Thermal conductivity [W/(m*K)]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Designation

Designation Material number Source
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Strain life

Temperature [°C] Static hardening coefficient [MPa] Static hardening exponent Cyclic fatigue strength coefficient [MPa] Cyclic fatigue strength exponent Ductility coefficient [Pa] Ductility exponent Cyclic strength coefficient [MPa] Cyclic strain hardening exponent Young's modulus [GPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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