Stainless Steel Alloy 420

Type 420 Stainless Steel, popularly known as "surgical steel," is a commonly employed martensitic stainless steel with a high carbon content. It is comparable to Type 410, but is stronger and harder. It can be toughened through heat treatment, which provides metal fabricators with outstanding ductility and polishability.

It is resistant to corrosion in fresh water, alkaline solutions, air, foods, crude oil, gasoline, and mild acids. In its annealed or hardened/tempered state, Type 420 Stainless Steel is extremely robust and can be difficult to weld. However, in its annealed state, it may be easily machined.

Due to its superior qualities, Type 420 Stainless Steel is utilized in a wide range of industries and applications, including:

Dental and surgical instruments

Pump shafts

Plastic dies and molds

Steel balls

Scissors

Gear shafts

Cams

Pivots

Lens molds

The unique chemical formula for producing Type 420 stainless steel includes the following elements:

Cr 12-14%

Mn 1% 

Si 1% 

C 0.15% 

P 0.04% 

S 0.03%

All of the Type 420 that SSM provides to our clients meets or exceeds the most stringent industry standards.