Stainless steel

AISI 420A
1.4021

420A is a martensitic stainless steel with high mechanical properties and a good corrosion resistance in oxidizing environments.

Key benefits

  • High mechanical resistance

Standards

  • ASTM F899

  • EN10088-3

Forms available in stock

Diameter
  • 1 mm to 30 mm
Dimensions
  • 3000 mm around

Chemical composition

Reference standard : ASTM F899
C
  • 0,26% min
  • 0,35% max
Si
  • 0% min
  • 1% max
Mn
  • 0% min
  • 1% max
P
  • 0% min
  • 0,04% max
S
  • 0% min
  • 0,03% max
Cr
  • 12% min
  • 14% max
Ni
  • 0% min
  • 1% max
Fe
  • Balance
Back

Mechanical properties

Rm (Mpa) according to diameter
600 - 875
Rp 0,2 (Mpa) according to quenching (QT)
450 - 600
Density (g/cm3)
7,70
A (%)
15