403 is a general-purpose martensitic stainless steel that can be heat-treated to achieve high hardness and strength. It offers moderate corrosion resistance and is widely used in turbine and industrial components.
Key Properties
Hardness: Can be hardened by heat treatment to achieve high tensile strength.
Wear Resistance: Excellent resistance to abrasion after hardening.
Corrosion: Moderate resistance to mild atmospheres and fresh water.
Machinability: Good machinability in the annealed condition.
Common Applications
Turbines: Steam turbine blades, diaphragms, and shaft components.
Cutlery: High-quality knives, scissors, and surgical instruments.
Fasteners: High-strength bolts, nuts, and screws.
Pumps: Shafts, bushings, and wear rings for abrasive media.