31 CrMo 12 | 1.8515 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
1.8515 (DIN 17211 : 1987-04)	31 CrMo 12	1.8515	DIN 17211 : 1987-04	DIN 17211 : 1987-04 replaced by DIN EN 10085 : 2001-07	Replaced	Germany	31CrMo12	1.1.1	1)
1) Remark: The nitriding steel 31 CrMo 12 can undergo quenchhardening and is used for heavy machine parts that are subjected to wear, have a high surface hardness and have a dimension of up to 250 mm. With parts for hot steam fittings such as valve spindles, it is used for dimensions of up to 100 mm and under highest pressure, the same with grinder valves and milling machine spindles. The steel contains a nitride agent (Cr) which contributes through the nitriding process or the nitro-carburization process with N or N and C to a higher: - case hardness - abrasion resistance - fatigue strength and - corrosion resistance. It is used for forged construction components: quench-hardened, mechanically processed and treated thermo-chemically (for example nitriding).

Chemical Composition

C [%]	Cr [%]	Mn [%]	Mo [%]	Ni [%]	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 [%]	Hardness HB \| HBW	Case Hardness HV
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Physical Properties

Temperature [°C]	Density [g/cm³]	Young's 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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Toughness Data (Impact)

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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Heat Treatment

Heat Treatment	Step	Temperature [°C]	Medium
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Cross Reference

Material Name	Country	Standard
31 CrMo 12	Belgium	NBN 253-04
30 CD 12	France	NF A 35-552
722 M 24	Great Britain	BS 970/1
31 CrMo 12	International	ISO 683/10-85
31 CrMo 12	Italy	UNI 8552
2240	Sweden	MNC 855 E
F.1712-31 CrMo 12	Spain	UNE 36-014
31CrMo12	Germany	DIN EN 10085

Producer/Supplier/Trade names

Tradename	Supplier
1.8515	H. Kleineberg GmbH, Stelle
31CrMo12	Hoesch Hohenlimburg GmbH, Hagen
31CrMo12	ThyssenKrupp Steel Europe AG, Duisburg
31CrMo12	Swiss Steel International GmbH, Düsseldorf
31CrMo12	Hermann Stahlschmidt Stahlgesellschaft m. b. H., Willich
31CrMo12	Haage Anagramm Technologien GmbH, Mülheim a. d. Ruhr
31CrMo12	C.D. Wälzholz GmbH & Co. KG, Hagen
31CrMo12	HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
31CrMo12	Tata Steel, IJmuiden
31CrMo12	Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
31CrMo12	Sidenor Deutschland, Düsseldorf
31CrMo12	ASCOMETAL GmbH, Erkrath
Almenit 8515	Almenit, Mittelberg
BGH 8515	BGH Edelstahl Siegen GmbH
BÖHLER V304	voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg
Buderus 31CrMo12	Buderus Edelstahl GmbH, Wetzlar
DIRO-31CrMo12	DIROSTAHL, Remscheid
EWK 31CrMo12	Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
G.K 3	AUBERT & DUVAL Deutschland GmbH, München
Klöckner 31CrMo12	Klöckner & Co SE, Duisburg

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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Density

Temperature [°C]	Density [g/cm³]
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Linear-elastic

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

Temperature [°C]	Stress ratio	Alternating stress [MPa]	Cycles
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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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Thermal conductivity

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

Temperature [°C]	Specific electrical resistance [µΩm]
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Designation

Designation	Material number	Source
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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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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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31 CrMo 12 | 1.8515 Material Datasheet

Material Test Series Values

Material Standard Values

Material Models for Simulation

Material Description

Chemical Composition

Material Compliance

Mechanical Properties

Physical Properties

Toughness Data (Impact)

FKM Guideline Fatigue Strength

Heat Treatment

Cross Reference

Producer/Supplier/Trade names

31 CrMo 12 (1.8515; DIN 17211 : 1987-04)

Classification

Density

Linear-elastic

Yield strength

Tensile strength

Alternating stress

Coefficient thermal expansion

Specific heat

Thermal conductivity

Electrical resistivity

Designation

31 CrMo 12 (quenched and tempered (+QT); bar; 0.000-100.000mm)

Classification

Yield strength

Tensile strength

31 CrMo 12 (quenched and tempered (+QT); bar; 100.000-250.000mm)

Classification

Yield strength

Tensile strength

31 CrMo 12 (quenched and tempered (+QT); bar; 100.000mm)

Classification

Tensile strength

31 CrMo 12 (quenched and tempered (+QT); hammer forging; 0.000-100.000mm)

Classification

Yield strength

Tensile strength

31 CrMo 12 (quenched and tempered (+QT); hammer forging; 100.000-250.000mm)

Classification

Yield strength

Tensile strength

Similar Materials

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Data Values

Series Points