420 Stainless Steel

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

 Grade specifications for 420 grade stainless steel

Grade

UNS No

Old British

Euronorm

Swedish SS

Japanese JIS

BS

En

No

Name

420

S42000

420S37

56C

1.4021

X20Cr13

2303

SUS 420J1

These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

Grade 420S45

Carbon 0.28-0.36% Chromium 12.00-14.00%
Manganese 1.00% max Sulphur 0.030% max
Silicon 1.00% max Phosphorous 0.040% max
Nickel 1.00% max Molybdenum 0.300% max
Our 420 hardened and tempered stock range

420 hardened and tempered stainless

360 0.50 1250 1.75
360 0.80 1250 2.80
360 1.00 1250 3.53
360 1.20 1250 4.25
380 1.50 2500 11.20
360 1.60 1250 5.65
380 1.80 2500 13.68
500 1.80 2500 17.60
360 2.00 1250 7.10
360 2.50 1250 8.85
360 3.00 1250 10.60
Most of the above sizes are available for next day delivery

We hold some stock in 420 annealed from 1.5 mm to 6.5mm thickness

Alternatively we stock 301 grade strip which is an austenitic grade. 301 is suitable for forming springs without the need for subsequent hardening.

Contact Details
  • Telephone 01709 820070
  • Fax 0114 244 5922
  • email bss@steelstrip.co.uk
  • Office Hours Monday to Thursday 09.00-17.00
  • Office Hours Friday 09.00-16.00
  • Fernite Works, Coleford Rd, Sheffield S9 5NJ

made-in-Sheffield3

iso

Need Spring Steel Fast? Order before 12  and we can deliver next day on a wide range of stock sheets

apc