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X7CrNiAl17-7 | 1.4568 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Predecessor VDA 231-106 classification Application temperature [°C]
1.4568 (DIN EN 10151 : 2003-02) X7CrNiAl17-7 1.4568 DIN EN 10151 : 2003-02 With DIN EN 10270-3 : 2001-08 replacement for DIN 17224 : 1982-02 Valid Germany X 7 CrNiAl 17 7 1.1.2 250 - 300 1)
1) Remark: The precipitation hardened steel X7CrNiAl17-7 is used for springs and spring parts. For reaching highest strength the delivery condition is cold rolled. For better formability the delivery in the solution annealed condition or low strain hardened condition can agreed. The steel has a high fatigue strength, is heat resistant but lower corrosion resistant than austenitic steels. The maximum application temperature between 120 and 250 °C, dependent from the load. A certain magnetic permeability exists.

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]
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Physical Properties

Condition Temperature [°C] Young's Modulus [GPa] Poisson's Ratio
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Heat Treatment

Heat Treatment Step Temperature [°C] Holding Time [h] Medium
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Formability - Bending - Folding

Condition Nominal Size [mm] Rolling Direction Bend Factor (90°)
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Cross Reference

Material Name Country Standard
07Cr17Ni7Al China GB/T 5310 1)
S51770 China GB/T 5310 1)
X7CrNiAl17-7 Europe EN 10151
X7CrNiAl17-7 International ISO 6931-2 1)
SUS 631-CSP Japan JIS G 4313 1)
A313 Type 631 USA SAE 2)
631 USA SAE 2)
17-7PH USA 2)
S17700 USA UNS 2)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach
2) Source: Metals & Alloys in the Unified Numbering System, SAE/ASTM, 11th Edition, 2008

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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Linear-elastic

Temperature [°C] Young's modulus [GPa] Bulk modulus [GPa] Shear modulus [GPa] Poisson's ratio
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Alternating stress

Temperature [°C] Stress ratio Mean stress [MPa] Alternating stress [MPa] Cycles
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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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Linear-elastic

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