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  • Stainless Steel 303


    ASTM/AISI:303   BS:303S21

    JIS:SUS303  NF:Z10CNF18.09



    Stainless Steel 303


    Type 303 Stainless Steel, also referred to as A1, is an often used non-magnetic, austenitic stainless steel. Type 303 is known for a number of important characteristics including:


    • Ease of fabrication
    • Outstanding heat resistance and oxidation when intermittently exposed to temperatures up to 760°C
    • Slightly higher corrosion resistance than Type 304


    Performance Table


    Grade and Main Chemical Composition%

    Grade C Si Mn P≤ S≤ Cr Mo Ni Other
    303 ≤0.10 ≤1.00 ≤2.00 0.045 0.03 17-19 8.0-10.0 Cu≤1.0



    Mechanical Properties


    Grade YS(Mpa) ≥ TS (Mpa) ≥ El (%) ≥ Hardness(HV) ≤
    303 190 500 35


    A wide number of industries use Type 303 Stainless Steel for many different applications including:


    • Aircraft fittings
    • Screws
    • Nuts and bolts
    • Gears
    • Bushings
    • Shafts
    • Food production


    Continental Steel is a supplier and distributor of Type 303 Stainless Steel in a variety of forms and shapes like flat, round, and square bar.