Stainless Steel 303

Material details

Stainless Steel 303 is a machinable austenitic stainless steel known for its excellent corrosion resistance, high strength, and superior machinability due to added sulfur and phosphorus. It offers good wear resistance and maintains structural integrity in moderate corrosive environments, making it ideal for precision components that require complex shapes or tight tolerances. Commonly used in fasteners, gears, bushings, shafts, and small mechanical parts, 303 SS is favored in automotive, aerospace, industrial machinery, and instrumentation applications. Its combination of corrosion resistance, mechanical performance, and ease of machining makes it a reliable choice for both functional prototypes and small-batch production parts.

Technical properties

Tensile strength

500 - 750 MPa

Tensile modulus

190 - 200 MPa