420 Stainless Steel

Introduction

420 is a martensitic stainless steel with rust resistant properties. It is characterised by a high hardness and high carbon content which provides both outstanding corrosion resistance and exceptional wear resistance. 

420 stainless steel is a higher carbon version of 410; and like most non-stainless steels it can be hardened by heat treatment.

We supply 420 stainless steel sheet and 420 stainless steel coil.  

Properties

It contains a minimum of 12 per cent chromium, just sufficient to give corrosion resistance properties. It has good ductility in the annealed condition but is capable of being hardened up to Rockwell Hardness 52HRC, the highest hardness of the 12 per cent chromium grades. 

Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.

Typical applications include fine cutlery, machine knives, surgical instruments, wear plates, cutting tools and knives and blades for the food processing industries.

Composition

 

Grade 420S37   (1.4021)

Carbon0.16-0.25%Chromium12.00-14.00%
Manganese Sulphur0.030% max
Silicon1.00% maxPhosphorous0.040% max
 

Grade 420S45 (1.4034  –   X46Cr13)

Carbon0.28-0.36%Chromium12.00-14.00%
Manganese1.00% maxSulphur0.030% max
Silicon1.00% maxPhosphorous0.040% max
Nickel1.00% maxMolybdenum0.300% max
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