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    Hastelloy C22®, Nicrofer® 5621

    A most versatile product like nickel-chromium-molybdenum-tungsten alloy available today with improved resistance to both localized and uniform corrosion as well as to a variety of mixed industrial chemicals but the Hastelloy C-22 alloy exhibits superior weldability and is used as weld overlay consumablesover and alloy filler wire to improve resistance to corrosion.

    Hastelloy C-22 alloy has exceptional resistance to a wide variety of chemical process environments, including strong oxidizers such as cupric and ferric chlorides, chlorine, hot contaminated solutions like (inorganic and organic), acetic anhydride and acetic acids, formic, and seawater and brine solutions. Hastelloy C-22 alloy resists the formation of grain-boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition.

    Regent Steel supplies Hastelloy C22 in the form of Hastelloy plate, Hastelloy sheet, Hastelloy strip, Hastelloy bar, Hastelloy wire, Hastelloy pipe, Hastelloy tubing, Hastelloy pipe fittings and Hastelloy flanges.

    Hastelloy C-22 should not be used in service temperatures above 1250° F due to the formation of detrimental phases which form above this temperature.

    Hastelloy C22® provides resistance to general corrosion, pitting, crevice corrosion, intergranular attack, and stress corrosion cracking. Hastelloy C22® can be used for many applications such as marine, power, chemical processing, pollution control, paper processing, and waste disposal industries. Hastelloy C22® contains chromium, molybdenum, tungsten, and iron which makes the alloy resistant to corrosion in stagnant or flowing seawater. The alloy is formed by gas tungsten-arc, gas metal - arc, and shielded metal-arc processes.

    Available forms are Hastelloy C22 Seamless Pipe, Hastelloy C22 Welded Pipe,Hastelloy C22 Seamless Tube,Hastelloy C22 Welded Tube, Hastelloy C22 Round Bars,Hastelloy C22 Wire,Hastelloy C22 Sheet,Hastelloy C22 Plate,Hastelloy C22 Forgings,Hastelloy C22 Pipe Fittings, Hastelloy C22 Flanges, Hastelloy C22 elbow, Hastelloy C22 tee, Hastelloy C22 ring, Hastelloy C22 perforated sheet, Hastelloy C22 cladding, Hastelloy C22 tubes, Hastelloy C22 fasteners, Hastelloy C22 mesh, Hastelloy C22 electrodes, Hastelloy C22 welding consumables, Hastelloy C22 efw pipe and Hastelloy C22 fabricated pipe.

    Chemical Analysis of Alloy C22 (UNS N06022)

    C MN P S Si Cr Ni Mo Co Fe W V
    0.015 max 0.50 max 0.02
    0.02 max 0.08 max 20.0 - 22.5 rem
    12.5 - 14.5 2.5 max 2.0 - 6.0 2.5 - 3.5 0.35 max


      Sheet / Plate   ASME SB-575
      Round Bar   ASME SB-574
      Pipe   ASME SB-622 / ASME SB-619 / ASME SB-775
      Tube   ASME SB-622 / ASME SB-516 / ASME SB-626
      Fittings   ASME SB-366
      Forgings   ASME SB-564

    Mechanical Properties - Typical Room Temperature Tensile Properties of Annealed Material

    Product Form Tensile (ksi) .2% Yield (ksi) Elongation % Hardness (HRb)
    Plate (.25”-1.75”) 112 53 62 89
    Sheet (.038”-.15”) 122 63 54 93
    Bar (.50”-5.50”) 115 55 60 89