34 CrAlNi 7 | 1.8550 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	Successor	Remark
1.8550 (DIN 17211 : 1987-04)	1.8550	DIN 17211 : 1987-04	DIN 17211 : 1987-04 replaced by DIN EN 10085 : 2001-07	Replaced	Germany	34CrAlNi7-10	The nitriding steel 34 CrAlNi 7 can undergo quenchhardening and is used for heavy machine parts, piston rods, plunger pistons, spindles with particularly large dimensions. The steel contains a nitride agent (Cr and Al) 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). The steel with an increased Al-content is susceptible to increased case decarbonization. The forging requires sufficient additives for processing so that the finished construction component can undergo the nitriding process without decarburization.

Chemical Composition

Al [%]	C [%]	Cr [%]	Mn [%]	Mo [%]	Ni [%]	P [%]	S [%]	Si [%]	Source
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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	Source	Remark
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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)]	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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Toughness Data (Impact)

Condition	Nominal Size [mm]	Temperature [°C]	Specimen Shape	Specimen Direction	Notch Impact Energy [J]	Source
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Heat Treatment

Heat Treatment	Step	Temperature [°C]	Medium	Source	Remark
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Cross Reference

Material Name	Country	Standard
40 CAD 6 12	France	NF A 35-552
A355 Grade C	USA	ASTM A355
34CrAlNi7-10	Germany	DIN EN 10085

Producer/Supplier/Trade names

Tradename	Supplier
1.8550	H. Kleineberg GmbH, Stelle
34 CrAlNi 7 BÖHLER V 820	voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf
34CrAlNi7	Hoesch Hohenlimburg GmbH, Hagen
34CrAlNi7	ThyssenKrupp Steel Europe AG, Duisburg
34CrAlNi7	voestalpine AG, Linz
34CrAlNi7	Georgsmarienhütte GmbH, Georgsmarienhütte
34CrAlNi7	Swiss Steel International GmbH, Düsseldorf
34CrAlNi7	Dörrenberg Edelstahl GmbH, Engelskirchen
34CrAlNi7	Walzwerke Einsal GmbH, Nachrodt
34CrAlNi7	Willy Haecker GmbH, Hückeswagen
34CrAlNi7	Hagenkötter GmbH & Co., Solingen
34CrAlNi7	Platestahl Umformtechnik GmbH, Lüdenscheid
34CrAlNi7	Hermann Stahlschmidt Stahlgesellschaft m. b. H., Willich
34CrAlNi7	Haage Anagramm Technologien GmbH, Mülheim a. d. Ruhr
34CrAlNi7	C.D. Wälzholz GmbH & Co. KG, Hagen
34CrAlNi7	HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
34CrAlNi7	Tata Steel, IJmuiden
34CrAlNi7	Günther + Schramm GmbH, Oberkochen
34CrAlNi7	Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
34CrAlNi7	Sidenor Deutschland, Düsseldorf
34CrAlNi7	ASCOMETAL GmbH, Erkrath
Almenit 8550	Almenit, Mittelberg
BGH 8550	BGH Edelstahl Siegen GmbH
BÖHLER V820	voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg
Buderus 34CrAlNi7	Buderus Edelstahl GmbH, Wetzlar
DIRO-34CrAlNi7	DIROSTAHL, Remscheid
Eschmann 8550	EschmannStahl GmbH, Reichshof-Wehnrath
EWK 34CrAlNi7	Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
Heros 8550	Aubert&Duval Special Steel GmbH, Mönchengladbach
Klöckner 34CrAlNi7	Klöckner & Co SE, Duisburg
N 35	ZAPP AG, Ratingen
NS 23	Gustav Grimm Edelstahlwerk GmbH & Co. KG, Remscheid
P.K 3	AUBERT & DUVAL Deutschland GmbH, München

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]	Source	Remark
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34 CrAlNi 7 (1.8550; DIN 17211 : 1987-04)

Linear-elastic

Temperature [°C]	Young's 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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34 CrAlNi 7 (quenched and tempered (+QT); bar; 0.000-100.000mm)

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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34 CrAlNi 7 (quenched and tempered (+QT); bar; 100.000-250.000mm)

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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34 CrAlNi 7 (quenched and tempered (+QT); hammer forging; 0.000-100.000mm)

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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34 CrAlNi 7 (quenched and tempered (+QT); hammer forging; 100.000-250.000mm)

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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34 CrAlNi 7 (quenched and tempered (+QT); bar; 100.000mm)

Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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34 CrAlNi 7 | 1.8550 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]

Toughness Data (Impact)

Heat Treatment

Cross Reference

Producer/Supplier/Trade names

Material Compliance

FKM Guideline Fatigue Strength

34 CrAlNi 7 (1.8550; DIN 17211 : 1987-04)

Linear-elastic

Alternating stress

Yield strength

Electrical resistivity

Coefficient thermal expansion

Specific heat

Density

Tensile strength

Thermal conductivity

Classification

Designation

34 CrAlNi 7 (quenched and tempered (+QT); bar; 0.000-100.000mm)

Yield strength

Tensile strength

Classification

34 CrAlNi 7 (quenched and tempered (+QT); bar; 100.000-250.000mm)

Yield strength

Tensile strength

Classification

34 CrAlNi 7 (quenched and tempered (+QT); hammer forging; 0.000-100.000mm)

Yield strength

Tensile strength

Classification

34 CrAlNi 7 (quenched and tempered (+QT); hammer forging; 100.000-250.000mm)

Yield strength

Tensile strength

Classification

34 CrAlNi 7 (quenched and tempered (+QT); bar; 100.000mm)

Tensile strength

Classification

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