Hastelloy® C-22

UNS N06022
W.Nr 2.4602

Applications

Springs, fasteners, seals, medical devices, and components used in flue gas equipment.

Description

Hastelloy® alloy C-22 is a Nickel-Chromium-Molybdenum alloy with excellent corrosion resistance to a wide variety of environments.  It is also resistant to oxidation, pitting, crevice corrosion, intergranular attack,and stress corrosion cracking.

Industries Supplied

Chemical Processing, Oil & Gas Extraction, and Power Generation.

Nominal Composition

Cr: 20.0 - 22.5
Mo: 12.5  - 14.5
Fe: 2.0 - 6.0
W: 2.5 to 3.5
Co: 2.5 max
Ni: balance
V: 0.35 max
C: 0.015 max
Mn: 0.50 max
S: 0.02 max
Si: 0.08 max

Physical Properties

Density: 0.311 lb/in3, (8.61 g/cm3)

Modulus of Elasticity (E): 
At 70°F (20°C): 29.9 x 103 ksi (206 GPa)

Modulus of Rigidity (G): 
At 70°F (20°C): 11.4 x 103 ksi (79 GPa)

Coefficient of Expansion:
7 µin/in.-°F (70°F to 600°F)
12.6 µm/m-°C (20°C to 300°C)

Electrical Resistivity: 44.8 µΩ.in, (114 µΩ.cm)

Thermal Conductivity: 91 Btu-in/ft2hr-°F, (13.2 W/m-K)

Applicable Specifications

Wire & Bar: ASTM B574, AWS A5.14, NACE MR0175 (ISO 15156-3)

Typical Mechanical Properties – Spring Applications

  • Annealed
    • Heat Treatment: 2048°F (1120°C)
    • Tensile Strength: 110 - 150 ksi; (758-1034 MPa)
    • Suggested Operating Conditions: -330°F to 750°F (-200°C to 400°C)

  • Spring Temper
  • Tensile Strength: 200 – 240 ksi; (1379 – 1655 MPa)
  • Suggested Operating Conditions: -330°F to 750°F (-200°C to 400°C‚Äč)


  • Hastelloy® is a registered trade mark of Haynes International, Inc..

    For further information Contact:

    Email: wireinfo@elgiloy.com
    Phone: 1 847 695 1900 
    Elgiloy Specialty Metals - Wire Products
    356 N.Cross Street
    Sycamore, IL 60178 USA