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20MoCr4 | 1.7321 Material Datasheet

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Material Description

Material Number Material Number (single) Standard Range of Application Standard Status Country Predecessor Successor
1.7321 (DIN EN 10084 : 2008-06) 1.7321 DIN EN 10084 : 2008-06 DIN EN 10084 : 2008-06 replaced by DIN EN ISO 683-3 : 2018-09 Replaced Germany 20MoCr4 20MoCr4 1)
1) Remark: Steel 20MoCr4 is suitable for parts in vehicle manufacturing and machine engineering, which are wear loaded at mean core strength, high ductility and fatigue strength (e.g. gear wheels, shafts, axles).

Chemical Composition

C [%] Cr [%] Mn [%] Mo [%] P [%] S [%] Si [%]
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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] 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 Step Temperature [°C] Holding Time [h]
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Cross Reference

Material Name Country Standard
G20CrMo China GB/T 3203 1)
B10200 China GB/T 3203 1)
20MoCr4 Europe EN 10084
20MoCr4 International ISO 683-3 1)
A434 Grade 4118 USA ASTM A434 1)
A914 Grade 4118RH USA ASTM A914 1)
4118 USA SAE 1)
4118H USA SAE 1)
G41180 USA UNS 1)
H41180 USA UNS 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename Supplier
1.7321 H. Kleineberg GmbH, Stelle
1.7321 INTERSTAHL Service GmbH, Wetter
1.7321 Rosswag GmbH, Pfinztal-Kleinsteinbach
1.7321 Imet Industriemetall Handelsgesellschaft mbH, Hamburg
20MoCr4 Hoesch Hohenlimburg GmbH, Hagen
20MoCr4 Salzgitter Flachstahl GmbH, Salzgitter
20MoCr4 ThyssenKrupp Steel Europe AG, Duisburg
20MoCr4 Georgsmarienhütte GmbH, Georgsmarienhütte
20MoCr4 Buderus Edelstahl GmbH, Wetzlar
20MoCr4 Swiss Steel International GmbH, Düsseldorf
20MoCr4 Walzwerke Einsal GmbH, Nachrodt
20MoCr4 Hermann Stahlschmidt Stahlgesellschaft m. b. H., Willich
20MoCr4 Stahlwerk Unna GmbH & Co.KG, Unna
20MoCr4 C.D. Wälzholz GmbH & Co. KG, Hagen
20MoCr4 ROPA STAHLVERTRIEB GMBH, Bad Bergzabern
20MoCr4 Vallourec Deutschland GmbH, Düsseldorf
20MoCr4 Stahlwerk Annahütte Max Aicher GmbH & Co. KG, Hammerau
20MoCr4 voestalpine AG, Linz
20MoCr4 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
20MoCr4 Tata Steel, IJmuiden
20MoCr4 Günther + Schramm GmbH, Oberkochen
20MoCr4 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
20MoCr4 Sidenor Deutschland, Düsseldorf
20MoCr4 ASCOMETAL GmbH, Erkrath
20MoCr4 Salzgitter Mannesmann Stahlhandel GmbH, Düsseldorf
20MoCr4 Hammerwerk Erft, G. Diederichs GmbH & Co. KG, Bad Münstereifel-Arloff
20MoCr4 Swiss Steel AG, Emmenbrücke
BGH 7321 BGH Edelstahl Siegen GmbH
BÖHLER E 320 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf
BÖHLER E320 voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg
CARBODUR 20MoCr4 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
G-20 MoCr 4 BFG Feinguss Niederrhein GmbH, Moers
Klöckner 20MoCr4 Klöckner & Co SE, Duisburg
OVAKO 124 D OVAKO STAHL GmbH, Erkrath
Plate 20MoCr4 Platestahl Umformtechnik GmbH, Lüdenscheid

Material Compliance

REACh RoHS
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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] Constant a for size factor Kd for yield stress Rp Constant a for size factor Kd for tensile strength Rm
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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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Fracture Toughness

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