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303 Stainless Steel | Stainless Steel Supply

303 stainless steel is an easy-to-process stainless steel, which is a kind of austenitic stainless steel. Its chemical composition includes elements such as chromium, nickel and small amounts of sulfur and phosphorus. Compared with other stainless steels, 303 stainless steel has better machinability and corrosion resistance.

Chemical composition


Note: These values are typical

Mechanical properties

Tensile strengthYield strengthElongation
620 Mpa415 Mpa35%

Note: These values are approximate

Physical properties

Density8.03 g/cm³
Melting Point1455°C
Thermal Expansion Coefficient17.3 x 10^-6/°C
Thermal Conductivity16.3 W/m-K
Specific Heat Capacity500 J/kg-K
Electrical Resistivity72.0 x 10^-9 Ω-m
Magnetic Permeability1.02
Young’s Modulus193 GPa

Note: These values are approximate

303 stainless steel is usually used in fields that require high processability and good corrosion resistance, such as aviation, automotive and medical equipment and other manufacturing industries. Additionally, it is suitable for applications such as the manufacture of shafts, gears and fasteners. However, it should be noted that 303 stainless steel has relatively low corrosion resistance and is not suitable for use in marine or acidic environments.

As a premium supplier of stainless steel, we offer a wide range of grades, sizes and finishes to suit your needs.
Size: according to customer requirements
Standards: GB, ASTM, EN, JIS, etc.
Austenitic type
Ferritic type
Martensitic type

Looking forward to your inquiry!