About

CNC machined Stainless Steel 420 is a martensitic stainless steel designed for applications requiring high hardness, strength, and wear resistance. The material can be heat treated to achieve significantly increased hardness, making it well suited for components exposed to friction, mechanical stress, or repeated use.

Stainless Steel 420 provides higher hardness and wear resistance than many other stainless steels, particularly after heat treatment, while maintaining moderate resistance to corrosion in mild environments. Compared to grades such as 304 or 18-8, it offers greater strength and edge retention but lower corrosion resistance, making it better suited for controlled conditions rather than highly corrosive or marine environments.

Typical applications include cutting tools, surgical instruments, valve components, shafts, bearings, molds, and wear-resistant mechanical parts where durability, surface hardness, and long-term performance are critical.

Technical Details

Accuracy

±0.2% (lower limit of ±0.13 mm)

Density

7.7 g/cm³

Min. wall thickness

-

Tensile strength

620 - 850 MPa

Tensile modulus

345 MPa

Tensile elongation

15 - 25%

Flexural strength

200000 MPa

Embossing

min. 0.3 mm

Engraving

min. 0.3 mm

Warping risk

N/A

Maximum printing dimensions