1.4057 (X17CrNi16-2) Material Data Sheet

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1.4057 (X17CrNi16-2) directly from stock & cut to your required dimensions

International identifiers
AISI431, BS431S29, SIS2321, GOST14Ch172N, SUS431, WL4044 , SS2321, 2H17N2

1.4057 is a corrosion and acid resistant martensitic chromium steel with nickel additive. The formation of chromium carbides and the associated chromium-depleted areas makes this material susceptible to intergranular corrosion.

1.4057 is popularly known as AISI 431​​​​​​​​​​​​.

Main application in mechanical engineering, as Pressure Disc, petroleum and petrochemical industry and aviation.

1.4057 Material data sheet


Weldability:         good

Machinability:      5 (1 = very bad - 10 = good)

Polishability:       yes

Corrosion class:   2 (0 = weak - 5 = good)


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Chemical composition
min.0,12    15,0 1,5   
max.0,221,01,50,040,01517,0 2,5   
In stock

flat, forged, quenched and tempered

Advantages of saw cut

The processing with the saw is a mechanical processing of the material, which results in a significantly lower unintended deformation and increased hardness for the existing structure, such as the thermal cutting. Thus, the machined workpiece has a homogeneous structure even at the edge, which does not change in the continuation of the material.

This circumstance allows immediate finishing of the workpiece with milling or drilling . So it is not necessary to anneal the material or make a similar operation beforehand.

Do you have any questions?

We are happy to answer your questions and make you an offer for these and other materials. Contact us now for more information.

Yoseli Gättner

Your contact person Yoseli Gättner+49 (0) 35263-665-19+49 (0) 35263-665-35

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Notice: Specifications contained in following data sheet are provided as a description, liability is excluded!


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