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254SMO/UNS S31254/F44

254SMO/UNS S31254/F44

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  1. Brief introduction:

    254SMO is described as a 6% Mo super austenitic stainless steel.

    It is  is much more resistant than ASTM TP316, and in naturally aerated sulphuric acid containing chloride ions Sandvik 254 SMO exhibits higher resistance than 904L grade.

    It is used in Equipment for handling of seawater,Hydraulic and instrumentation tubing,Equipment in pulp bleaching plants,Components in gas cleaning systems,Tanks and pipelines for chemicals with high halide contents,etc.


  2. Main specifications:

    OutokumpuUNSEN No.W.Nr
    254SMOS312541.45471.4529**


  3. Chemical composition under ASTM A240 standard:

    Gradechemical composition,%
    UNS S31254NiCrMoMnNCuSiCPSFe
    17.5-18.519.5-20.56.0-6.5≤1.00.18-0.250.5-1.0≤0.8≤0.02≤0.03≤0.01Bal.


  4. Main product types:

    wire,rod, bar,strip,sheet/plate,tube/pipe,flanges, etc.


  5. Main produce standards:

    Wire, rod, Bar, forgingSheet/plate,Strippipe,flange,fitting,valve
    EN 10088-3ASME SA240ASTM A269/A213/A312
    ASTM A276ASTM A240NFA 49-217
    ASTM A479EN 10088-2EN 10216-5
    ASTM A473
    ASTM A182


254SMo, S31252, 015cr20ni18mo6CuN,00Cr20Ni18Mo6CuN 254SMO document:
254smo.pdf