20MoCr4 | 1.7321 Material Datasheet

Material Test Series Values

Material Standard Values

Material Models for Simulation

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Material Description

Material Number	Material Number (single)	Standard	Range of Application	Standard Status	Country	Predecessor	Remark
1.7321 (DIN EN ISO 683-3 : 2022-06)	1.7321	DIN EN ISO 683-3 : 2022-06	Supersedes DIN EN ISO 683-3 : 2019-04	Valid	Germany	20MoCr4	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 [%]	Cu [%]	Mn [%]	Mo [%]	P [%]	S [%]	Si [%]	Source
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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	Source	Remark
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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)]	Source
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Young's Modulus [GPa] vs Temperature [°C]

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Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] vs Temperature [°C]

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Differential Coefficient of Thermal Expansion [10^-6*K^-1] vs Temperature [°C]

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Heat Treatment

Heat Treatment	Step	Temperature [°C]	Holding Time [h]	Source
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Cross Reference

Material Name	Country	Standard	Source
G20CrMo	China	GB/T 3203	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
B10200	China	ISC	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
1.7321	Europe	EN 10084	EN ISO 683-3:2022-02
20MoCr4	Europe	EN 10084	EN ISO 683-3:2022-02
20MoCr4	Europe	EN ISO 683-3
20MoCr4	International	ISO 683-3
A434 Grade 4118	USA	ASTM A434	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
A914 Grade 4118RH	USA	ASTM A914	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
4118	USA	SAE	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
4118H	USA	SAE	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
G41180	USA	UNS	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
H41180	USA	UNS	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename	Supplier	Source
E320	voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf	Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
Carbodur 7321	Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten	Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
20MoCr4	Georgsmarienhütte GmbH, Georgsmarienhütte	Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
20MoCr4	HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach	Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
20MoCr4	pauly STAHLHANDEL, Essen	Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
20MoCr4	Salzgitter Mannesmann Stahlhandel GmbH, Düsseldorf	Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
20MoCr4	Stahlwerk Annahütte Max Aicher GmbH & Co. KG, Hammerau	Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
Ovako 124	OVAKO STAHL GmbH, Erkrath

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	Source	Remark
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Hardenability (Jominy test)

Condition	Front Distance [mm]	Hardness HRC (+H grade)	Hardness HRC (+HH grade)	Hardness HRC (+HL grade)	Source
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Fracture Toughness

Temperature [°C]	Plane-Strain Fracture Toughness KIc [MPa*m^½]	Source	Remark
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20MoCr4 (1.7321; DIN EN ISO 683-3 : 2022-06)

Linear-elastic

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

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

Temperature [°C]	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	Source description
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Designation

Designation	Material number	Source
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20MoCr4 (simulated case-hardened; bar; 11.000mm)

Yield strength

Temperature [°C]	Yield strength [MPa]
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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20MoCr4 (simulated case-hardened; bar; 30.000mm)

Yield strength

Temperature [°C]	Yield strength [MPa]
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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20MoCr4 (quenched (+Q); drop forging; 0.000-16.000mm)

Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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20MoCr4 (quenched (+Q); drop forging; 16.000-40.000mm)

Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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20MoCr4 (simulated case-hardened; bar; 16.000mm)

Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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20MoCr4 | 1.7321 Material Datasheet

Material Test Series Values

Material Standard Values

Material Models for Simulation

Material Description

Chemical Composition

Mechanical Properties

Physical Properties

Young's Modulus [GPa] vs Temperature [°C]

Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] vs Temperature [°C]

Differential Coefficient of Thermal Expansion [10^-6*K^-1] vs Temperature [°C]

Heat Treatment

Cross Reference

Producer/Supplier/Trade names

Material Compliance

FKM Guideline Fatigue Strength

Hardenability (Jominy test)

Fracture Toughness

20MoCr4 (1.7321; DIN EN ISO 683-3 : 2022-06)

Linear-elastic

Alternating stress

Yield strength

Electrical resistivity

Coefficient thermal expansion

Specific heat

Density

Tensile strength

Thermal conductivity

Classification

Designation

20MoCr4 (simulated case-hardened; bar; 11.000mm)

Yield strength

Tensile strength

Classification

20MoCr4 (simulated case-hardened; bar; 30.000mm)

Yield strength

Tensile strength

Classification

20MoCr4 (quenched (+Q); drop forging; 0.000-16.000mm)

Tensile strength

Classification

20MoCr4 (quenched (+Q); drop forging; 16.000-40.000mm)

Tensile strength

Classification

20MoCr4 (simulated case-hardened; bar; 16.000mm)

Tensile strength

Classification

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