Stainless Steel 420 is a martensitic stainless steel grade and is generally preferred for applications such as cutting tools and surgical instruments because of its high hardness and strength.

The main features of Stainless Steel 420 are:

High Hardness: Stainless Steel 420 is a hard steel grade and typically reaches a hardness range of 50-55 HRC. This makes it suitable for cutting and drilling applications.

Strength: 420 stainless steel has good strength, which supports durability and long service life.

Cutting Tools and Knife Making: Stainless Steel 420 is widely used in knives, surgical instruments and other cutting tools. It is preferred because of its high hardness and long-lasting cutting edge performance.

Corrosion Resistance: Like other stainless steel grades, 420 stainless steel provides a certain level of corrosion resistance, although it is not as high as that of some other grades.

Heat Treatment Response: Stainless Steel 420 responds well to heat treatment and can achieve optimum properties with the correct process. Hardening and tempering can be used to tailor its properties.

Machinability: Stainless Steel 420 offers good machinability, making it easier to process for different applications.

Typical Uses:
Forks, knives and spoons
Knife edges
Surgical instruments
Needle valves
Scissor blades

Stainless Steel 420 is used in cutting and surgical tools as well as medical devices, dental instruments, bearings and other industrial applications. Since its corrosion resistance is lower than some other stainless steel grades, it is generally preferred in applications that are not exposed to severe corrosion.