420A – AISI 420/SUS420J2

420A – AISI 420/SUS420J2

420A – AISI 420/SUS420J2

(South America offer) 12% chromium Martensitic Stainless Steel with 0.30% C content. This grade is characterised by its ability to be hardened by heat treatment.

Main features

The characteristic of this Martensitic grade is its ability to be hardened by heat treatment. Thus, when quenched they attain high levels of resistance enabling the achievement of a cutting edge. Combined with their good corrosion resistance, this aptitude meets the requirements of many applications. Delivered by Aperam South America.


  • Blades for knives and various utensils for food preparation
  • Blades for industrial equipment
  • Cutting tools
  • Mechanical parts and other tools
420A – AISI 420/SUS420J2


  • AISI 420
  • UNS S42000
  • EN 1.4028
  • SUS420J2
  • IMDS ID 336811249

Chemical Composition

Typical values

  • C=0.32
  • Si=0.40
  • Mn=0.30
  • Cr=12.20
  • P=0.031
  • S=0.001

Dimensional range

Coils & Sheets

  • Thickness: from 0.60 up to 6.35 mm
  • Width: from 1,200 to 1,220 mm

Surface aspects

  • Hot rolled & Cold rolled
  • NR1/1D, 2D, 2B

According to forms & dimensions.

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