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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Predecessor Successor VDA 231-106 classification
1.4568 (DIN EN 10088-1 : 2014-12) X7CrNiAl17-7 1.4568 DIN EN 10088-1 : 2014-12 DIN EN 10088-1 : 2014-12 replaced by DIN EN 10088-1 : 2024-04 Replaced Germany X7CrNiAl17-7 X7CrNiAl17-7 1.1.2 1)
1) Remark: Precipitation hardening corrosion resisting steel.

Chemical Composition

Al [%] C [%] Cr [%] Mn [%] 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 (0.2% offset) [MPa] Elongation A [%] Elongation A80 [%] Hardness HB | HBW
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Physical Properties

Temperature [°C] Density [g/cm³] Young's Modulus [GPa] Poisson's Ratio 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)] Magnetizeability
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Heat Treatment

Semi-finished Product Heat Treatment Step Temperature [°C] Holding Time [h] Medium
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Cross Reference

Material Name Country Standard
07Cr17Ni7Al China GB/T 1220 1)
07Cr17Ni7Al China GB/T 3280 1)
07Cr17Ni7Al China GB/T 4226 1)
07Cr17Ni7Al China GB/T 4237 1)
07Cr17Ni7Al China GB/T 4238 1)
S51770 China GB/T 20878 2)
X7CrNiAl17-7 Europe DIN EN 10088-2
X7CrNiAl17-7 Europe DIN EN 10088-3
X7CrNiAl17-7 Europe EN 10088-2
X7CrNiAl17-7 Europe EN 10088-3
X7CrNiAl17-7 International ISO 15510 1)
PP24L International ISO 15510 1)
4568-327-07-U International ISO 15510 2)
SUS631 Japan JIS G 4303 1)
SUS631 Japan JIS G 4304 1)
SUS631 Japan JIS G 4305 1)
09Ch17N7Ju Russia GOST 5632 1)
09Х17Н7Ю Russia ГОСТ 5632 1)
STS631 South Korea KS D 3698 1)
STS631 South Korea KS D 3705 1)
STS631 South Korea KS D 3706 1)
S17700 USA UNS 1)
A480 Type 631 USA ASTM A480 1)
A564 Type 631 USA ASTM A564 1)
A693 Type 631 USA ASTM A693 1)
A959 UNS S17700 USA ASTM A959 2)
631 USA AISI 1)
Type 631 USA AISI 1)
X 7 CrNiAl 17 7 Germany DIN 17224
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
2) Source: EN 10088-1 : 2014-10

Producer/Supplier/Trade names

Tradename Supplier
1.4568 Rolf Kind GmbH, Gummersbach
1.4568 Sprint Metal Edelstahlziehereien GmbH, Hemer
1.4568 INOX SERVICE CENTER GmbH, Krefeld
1.4568 INTERSTAHL Service GmbH, Wetter
1.4568 Imet Industriemetall Handelsgesellschaft mbH, Hamburg
17-7 PH Enpar Sonderwerkstoffe GmbH, Gummersbach
AL 17-7 ATI Flat Rolled Products GmbH, Remscheid
Alloy 17-7PH ROPA STAHLVERTRIEB GMBH, Bad Bergzabern
ARGESTE 1.4568 Zapp Precision Metals GmbH, Schwerte
AVESTA-Polarit 4568 Outokumpu GmbH, Willich
BEKINOX PH1 Bekaert GmbH, Friedrichsdorf
BGH 4568 BGH Edelstahl Siegen GmbH
BÖHLER N750 voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg
Cogne 631 COGNE Edelstahl GmbH, Neuss
NIROSTA 4568 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
NIROSTA 4568 Outokumpu Nirosta GmbH, Krefeld
Puro 1.4568 Remystahl GmbH & Co. KG, Hagen
SANDVIK 9RU10 SANDVIK Materials TEchnology Deutschland GmbH, Düsseldorf
THENOX 4568 C.D. Wälzholz GmbH & Co. KG, Hagen
UGINE S4568 Ugitech SA, Ugine
X7CrNiAl17-7 Hoesch Hohenlimburg GmbH, Hagen
X7CrNiAl17-7 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
X7CrNiAl17-7 Tata Steel, IJmuiden
X7CrNiAl17-7 EZM Edelstahlzieherei Mark GmbH, Wetter
X7CrNiAl17-7 pauly STAHLHANDEL, Essen

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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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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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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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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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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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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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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