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    321


    321

    As a kind of steel with the inter-granular corrosion resistance enhanced by adding Ti into 304 steel, it is used for heat exchangers and boiler covers, etc.  

    Features and Applications:

    Type321
    Features-- used in particular Applicationss within the sensitizing temperature range.(450 ℃~850 ℃)
    Applications --Boiler heat exchanger,furnace components, super heater and afterburner parts, compensators and expansion bellows 

    Chemical Composition (wt%)

    SpecsCSiMnPSCrNiOthers
    TYPE
    321
    ≤0.08
     
    ≤1.00
     
    ≤2.00
     
    ≤0.045
     
    ≤0.030
     
    17.00~9.00

     

    9.00~13.00
     
    Ti: ≥ 5 × C%

    Mechanical Properties:

    Specs
    ( Mpa )EL(%)Hv
    TYPE
    321
    ≥205
     
    ≥520
     
    ≥40
     
    ≤200
     

    Applications Example:


     


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