420A ( 1.4021, X20Cr13 ) stainless steel
Martensite grade AISI 420A ( EN 1.4021 / DIN X20Cr13 ), used mostly for cutting tools, blades, knives, scissors, files,
and for many other applications requiring good sharp edge retention, or high strength properties.
Alloy 420 is used for a variety of applications where good corrosion and outstanding hardness is necessary.
It is not usually used at temperatures exceeding 800°F (427°C) due to quick hardening and loss of corrosion resistance.
Examples of applications that use alloy 420 include:
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