Application Segments

    Oil & Gas/CPI

    Melting Route

    Airmelted

    Product Description

    BÖHLER A911SA is a ferritic-austenitic stainless steel of Type 25%Cr with PREN of min. 40. It offers excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties. However, it contains less copper compared to other super Duplex SS but a deliberate addition of tungsten instead, claimed to selectively improve corrosion resistance. Good weldability, post weld heat treatment not necessary.
    Max. temperature for long periods of service: 280°C (535°F ) / (300°C/570°F possible for short
    periods).
    Surface condition for optimum corrosion resistance: pickled or machined.
    Components in offshore, waste water, sea water desalination and chemical plants with aggressive chloride-containing media e.g. heat exchangers, separator parts, compressor and pump components, turbine blades.

    Property Features

    Ferritic-austenitic stainless steel. Excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties. Good weldability, post weld heat treatment not necessary. Max. temperature for long periods of service: 280°C (535°F) / (300°C/570°F possible for short periods). Surface condition for optimum corrosion resistance: pickled or machined.

    Technical Specifications

    Material Numbers


    F55 1.4501 X2CrNiMoNCuW25-7-4 S32760


    Standards


    10088-3 A182/A182M A276/A276M A479/A479M MDS D57

    Chemical Composition

    Chemical composition (average %)
    max. 0.030 max. 1.00 max. 1.00 max. 0.030 max. 0.010 24.0 to 26.0 3.0 to 4.0 6.0 to 8.0 0.50 to 1.00 0.50 to 1.00 0.20 to 0.30

    Available product shapes

    Information on Long Products ) Presented data refer exclusively to long products. Please observe the detailed explanations at the end of the data sheet (pdf).

    • Long Products

      Long Products

    • Plates

      Plates

    • Semi-Finished Products / Billet

      Semi-Finished Products / Billet

    Contacts

    BÖHLER Special Products

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