Supreme Steels

Alloy 420

Alloy 420 - Martensitic Stainless Steel

Alloy 420 is a high-carbon martensitic stainless steel known for its excellent hardness, wear resistance, and moderate corrosion resistance. It is commonly used in applications that require high strength and hardness, such as cutting tools, surgical instruments, and industrial equipment. Alloy 420 can be hardened through heat treatment, offering good mechanical properties and resistance to wear and tear.

Features of Alloy 420:

Specifications:

Applicable Standards:

Mechanical Properties:

Property Value
Tensile Strength ~550 MPa
Yield Strength ~250 MPa
Elongation ~18%
Hardness (BHN) 200-400
Density 7.75 g/cm³

Thermal Properties:

Chemical Composition:

Element Percentage (%)
Chromium (Cr) 12.0-14.0
Nickel (Ni) ≤0.75
Manganese (Mn) ≤1.0
Silicon (Si) ≤1.0
Carbon (C) 0.15-0.40
Phosphorus (P) ≤0.04
Sulfur (S) ≤0.03