Super Duplex UNS S32750

    High resistance to pitting, crevice and chloride stress corrosion, high resistance to general corrosion in acids, high corrosion fatigue and erosion corrosion, good weldability, High Pitting Resistance Equivalent Number (>40).

     

    Super Duplex Specification/Condition

    • ASTM A182/ ASTM A479 / NACE MR0175

    Super Duplex applications

    • O&G equipment
    • offshore platforms
    • heat exchangers
    • water injection systems
    • chemical industries

    Super Duplex technical data

    • UTS (KSI): 116-145 Min
    • Yield 0.2% Offset (KSI): 80 Min
    • EL (% Min): 25
    • RA (% Min): –
    • Hardness (HRC): 18-32
    • Charpy Impact Min. ft-lbs: 50 @-50°F

    Super Duplex dimensions

    • 0.5 – 10.0 in

    Super Duplex Chemical composition (Wt %)

     

    Carbon
    (C)
    Manganes
    (Mn)
    Phosphorus
    (P)
    Sulfur
    (S)
    Silicon
    (Si)
    Nickel
    (Ni)
    Cobalt
    (Co)
    0.030 Max 1.2 Max 0.025 Max 0.015 Max 0.8 Max 6.0-8.0

     

    Chromium
    (Cr)
    Manganese
    (Mo)
    Niobium + Tantalum
    (Nb (Cb) + Ta)
    Titanium
    (Ti)
    Copper
    (Cu)
    Aluminum
    (Al)
    Iron (Fe) & Others
    24.0-26.0 3.0-4.0 PREN– 40 Min, Nitrogen– 0.3,
    Fe– Balance

     

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