Application Segments

    Oil & Gas/CPI Land Based Turbines

    Melting Route


    Product Description

    BÖHLER N400 is a stainless soft martensitic Cr steel with 4% nickel with molybdenum addition and medium corrosion resistance in media with only a low chloride content. To achieve the best possible corrosion resistance with BÖHLER N400, it is essential to polish the surfaces concerned. Good mechanical properties in the quenched and tempered condition. This makes this material very suitable for use in turbine and power plant construction. Very good low-temperature properties. Recommended temperature of use: – 60 to 350°C.
    Use for valves, pumps, compressors, centrifuges, hydroelectric machines, turbines, reactor technology, shipbuilding, chemicals.
    Special heat treatment to max. 23 HRC is required for sour gas enviroment in petroleum engineering.

    Property Features

    Soft martensitic chromium stainless steel with 4% nickel addition. Good properties at subzero temperature. The alternative to conventionally melted BÖHLER N400 EXTRA is BÖHLER N400 ISOEXTRA produced by the Electroslag remelting procedure (ESR).

    Technical Specifications

    Material Numbers

    F6NM 1.4313 X3CrNiMo13-4 S41500


    10088-3 A182/A182M

    Chemical Composition

    Chemical composition (average %)
    max. 0.05 max. 0.70 max. 1.50 max. 0.040 max. 0.015 12.0 to 14.0 0.30 to 0.70 3.5 to 4.5 min. 0.020

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