1.4021 (X20Cr13) Material Data Sheet

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1.4021 (X20Cr13) directly from stock & cut to your required dimensions

International identifiers
AISI420, UNS S42000, AFNOR Z20C13, BS 420S37, BS 420S29, UNI X20Cr13, SS 2303, JIS SUS420J1, JIS SUS420J1, JIS SUS 420J1, GOST 20Ch13, GB 2Cr13

1.4021 is a corrosion and acid resistant martensitic chromium steel with good corrosion resistance in moderately corrosive, chloride-free media, such as organic acids, soaps and solvents.

1.4021 is popularly known as AISI 420​​​​​.


Main application in mechanical engineering, petroleum and petrochemical industry, hydraulic industry.


Weldability:         good

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

Polishability:        yes

Corrosion class:  1 (0 = weak - 5 = good)


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Chemical composition
min.0,16    12,0       
In stock

Round, forged, quenched and tempered, machined
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.

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


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