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Hastelloy C22

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Alloy C22 Manufacturer · Hastelloy C · EN 2.4602

Hastelloy C22 Alloy developed to work where “upset” conditions are likely to occur or in multi-purpose plants.

Hastelloy C22, also known as Alloy C22, is a versatile austenitic nickel-chromium-molybdenum-tungsten alloy with enhanced resistance to pitting, crevice corrosion and stress corrosion cracking. The high chromium content provides good resistance to oxidizing media while the molybdenum and tungsten content give good resistance to reducing media. This nickel steel alloy also has excellent resistance to oxidizing aqueous media including wet chlorine and mixtures containing nitric acid or oxidizing acids with chlorine ions. Other corrosives UNS N06022 Alloy has resistance to are oxidizing acid chlorides, wet chlorine, formic and acetic acids, ferric and cupric chlorides, sea water, brine and many mixed or contaminated chemical solutions, both organic and inorganic. This nickel alloy also offers optimum resistance to environments where reducing and oxidizing conditions are encountered in process streams. This is beneficial in multi- purpose plants where such “upset” conditions occur frequently. This nickel 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. Hastelloy C should not be used in service temperatures above 1250° F due to the formation of detrimental phases which form above this temperature.

Industry Names: Hastelloy, Hastelloy C22, Hastelloy C, UNS N06022
Specifications: UNS N06022, AFNOR NU-30M, WNR/DIN 2.4602, EURONORM NiCr21Mo14W
Applications: Pharmaceutical industries, Cellophane manufacturing, Chlorination systems, Pesticide production
Features: Resistant to pitting, crevice corrosion and stress, Resistance to oxidizing aqueous media, Excellent weldability

Siddhagiri Metals and Tubes is one of the leading suppliers of Hastelloy C22. We supply C22 Alloy in Forms such as Seamless Pipe ASTM B622 UNS N06022, Welded Pipe ASTM B619 UNS N06022, Seamless Tube B622 UNS N06022, Welded Tube ASTM B626 UNS N06022, Flange ASTM B564 UNS N06022, Fasteners, Pipe Fittings ASTM B366 UNS N06022, Tube Fittings, Forged Fittings ASTM B564 UNS N06022, Round Bar ASTM B574 UNS N06022, Sheet Plate ASTM B575 UNS N06022, Wire Mesh. Hastelloy® C-22® is a registered trademark of Haynes International, Inc.


Siddhagiri Metals and Tubes is a global supplier of Hastelloy C22. Our company is CRISIL MSE 4 Rated.
Other Names: Hastelloy C, Alloy C22, Alloy C, UNS N06022
Category: Hastelloy > Hastelloy C22
Material: Hastelloy C22 | Exotic Material
Brand: Siddhagiri Metals and Tubes
Manufacturer: Siddhagiri Metals and Tubes
Rating: 4.4/5 based on 88 customer reviews

Hastelloy C22 Specifications and Standards

Grade North America France Germany Japan Russia European Russian British Other Names
Hastelloy C22 UNS N06022 AFNOR NU-30M WNR/DIN 2.4602 EURONORM NiCr21Mo14W Alloy C22/ Hastelloy C

Properties of Hastelloy C22

  • Chemical Properties
    C W Mn Fe S Si Cr Ni Co Mo P V
    MIN - 2.500 - 2.000 - - 20.000 Bal - 12.500 - -
    MAX 0.015 3.500 0.500 6.000 0.020 0.080 22.500 2.500 14.500 0.020 0.350
  • Mechanical Properties
    Yield Strength
    0.2% Proof
    (MPa)
    Tensile strength
    (MPa)
    Elongation
    (% in 50mm)
    Hardness
    (HRB)
    MIN 310 690 45.00  
    MAX       100
  • Physical Properties
    Density lb/in³ 0.311
    g/cm³ 8.61
    Specific Heat Btu/lb•°F 0.091
    J/kg•°C 381
    Melting Range °F 2464-2529
    °C 1351-1387
    Permeability 200 oersted (15.9 kA/m) ≤1.001
    Young's Modulus 103 ksi 30.3
    GPa 209
    Electrical Resistivity ohm•circ mil/ft 730.7
    microhm•m 1.215
    Coefficient of Expansion 70-200°F,106 in/in•°F 6.9
    21-193°C, μm/m•°C 12.42

Forms of Hastelloy C22

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