About Smiths Advanced

We are a leading stockholder and global supplier of metals and plastics into Aerospace & Space, Chemical, Defence, Medical, MRO, Naval, Nuclear, Oil & Gas and Power industries.

We make high quality materials available in a fast, cost-effective and convenient package and provide a consistent supply path for all our customers.

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321 Stainless Steel Sheet

Strength and toughness at sub-zero temperatures.


321 stainless is easily welded and formed and is resistant in oxidating environments.

321 stainless steel sheet is an austenitic material that is stabilised with titanium.


321 stainless steel sheets offer as the primary advantage of an excellent resistance to intergranular corrosion to temperatures in the chromium carbide precipitation range from 427 to 816°C (800 to 1500°F). The titanium stabilised product benefits from reduced carbide precipitation during welding and improves the alloy's suitability for use in elevated temperatures. 321 stainless is easily welded and formed and is resistant in oxidating environments. The alloy maintains strength and toughness in sub-zero temperatures.


Commercial Applications

Typical applications include heat exchangers, petrochemical processing equipment, pressure vessels, boilers and aerospace engine components. The alloy offers improved creep and stress rupture properties compared to 304/304L in the annealed condition.



321 Stainless Steel Sheet Datasheet

Stock Availability

Smiths Advanced Metals stocks 321 stainless steel sheets in the solution heat-treated (annealed) condition. Sheet stock from grade 321 are available in various thicknesses.



Product Features:


    1.4541
    AMS5510
    ASME SA240
    ASNA3106
    ASTM A240
    BS S526, BS S500
    NACE MR0103, NACE MR0175
    UNS S32100
    Z6CNT18.10

    Heat exchangers
    Pressure vessels
    Boilers
    Aerospace engine components

    Good mechanical properties
    Excellent toughness at sub-zero temperatures
    Excellent oxidation resistance
    Easily welded and formed

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