1.4028 (X30Cr13) Material Data Sheet

1.4028 is a stainless martensitic chromium steel. A higher carbon content is 1.4028 more hardenable than 1.4021. Good corrosion resistance in moderately aggressive, chlorine-free media, organic acids, soaps and solvents.

1.4028 is popularly known as AISI 420​​​​​.
 

Main applications: automotive industry, electronic equipment, machine, pump and valve components, cutlery industry.

Weldability:       medium

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

Polishability:     yes

Corrosion class: 3 (0 = weak - 5 = good)

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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.