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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Successor VDA 231-106 classification
1.8519 (DIN 17211 : 1987-04) 31 CrMoV 9 1.8519 DIN 17211 : 1987-04 DIN 17211 : 1987-04 replaced by DIN EN 10085 : 2001-07 Replaced Germany 31CrMoV9 1.1.1 1)
1) Remark: The nitriding steel 31 CrMoV 9 can undergo quenchhardening and is used for parts for hot steam fittings, valve spindles, crank shafts, and similarly stressed wear parts that have a dimension of up to 100 mm. 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 [%] P [%] S [%] Si [%] V [%] 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] 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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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 CrMoV 10 Italy UNI 8552
F.1721-31 CrMoV 10 Spain UNE 36-014
31CrMoV9 Germany DIN EN 10085

Producer/Supplier/Trade names

Tradename Supplier
1.8519 H. Kleineberg GmbH, Stelle
30 CrMoV 9 Sidenor Deutschland, Düsseldorf
31 CrMoV 9 BÖHLER V 350 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf
31CrMoV9 Hoesch Hohenlimburg GmbH, Hagen
31CrMoV9 ThyssenKrupp Steel Europe AG, Duisburg
31CrMoV9 Georgsmarienhütte GmbH, Georgsmarienhütte
31CrMoV9 Swiss Steel International GmbH, Düsseldorf
31CrMoV9 Walzwerke Einsal GmbH, Nachrodt
31CrMoV9 Willy Haecker GmbH, Hückeswagen
31CrMoV9 Hagenkötter GmbH & Co., Solingen
31CrMoV9 Platestahl Umformtechnik GmbH, Lüdenscheid
31CrMoV9 Hermann Stahlschmidt Stahlgesellschaft m. b. H., Willich
31CrMoV9 Haage Anagramm Technologien GmbH, Mülheim a. d. Ruhr
31CrMoV9 C.D. Wälzholz GmbH & Co. KG, Hagen
31CrMoV9 Vallourec Deutschland GmbH, Mülheim
31CrMoV9 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
31CrMoV9 Tata Steel, IJmuiden
31CrMoV9 Günther + Schramm GmbH, Oberkochen
31CrMoV9 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
31CrMoV9 ASCOMETAL GmbH, Erkrath
Almenit 8519 Almenit, Mittelberg
BGH 8519 BGH Edelstahl Siegen GmbH
BÖHLER V350 voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg
Buderus 31CrMoV9 Buderus Edelstahl GmbH, Wetzlar
DIRO-31CrMoV9 DIROSTAHL, Remscheid
Eschmann 8519 EschmannStahl GmbH, Reichshof-Wehnrath
EWK 31CrMoV9 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
G.K.J. AUBERT & DUVAL Deutschland GmbH, München
Heros 8519 Aubert&Duval Special Steel GmbH, Mönchengladbach
KHD Dörrenberg Edelstahl GmbH, Engelskirchen
Klöckner 31CrMoV9 Klöckner & Co SE, Duisburg
N 31 ZAPP AG, Ratingen
NS 54 Gustav Grimm Edelstahlwerk GmbH & Co. KG, Remscheid

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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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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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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