Hastelloy^® C-4

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Applications

Springs and components operating in oxidizing and non-oxidizing acids.

Description

Hastelloy^® alloy C-4 is a nickel-chromium-molybdenum alloy with good oxidation resistance and stress-corrosion cracking resistance at  high temperatures.  Hastelloy® alloy C-4 also has high resistance to many chemical process environments and is particularly resistant to hydrochloric acid, sulfuric acid, and chlorides.

Industries Supplied

Chemical Processing

Nominal Composition

Cr: 14.0 – 18.0
Mo: 14.0  – 17.0
Fe: 3.0 max
Co: 2.0 max
Mn: 1.0 max
Ni: balance
C: 0.015 max
Ti: 0.7 max
Si: 0.08 max
P: 0.04 max
S: 0.03 max

Physical Properties

Density: 0.312 lb/in³, (8.64 g/cm³)

Modulus of Elasticity (E): 
At 70°F (20°C): 30.8 x 103 ksi (211 GPa)

Modulus of Rigidity (G): 
At 70°F (20°C): 11.8 x 10³ ksi (81.0 GPa)

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

Electrical Resistivity: 49.1 µΩ.in, (125 µΩ.cm)

Thermal Conductivity: 70 Btu-in/ft²hr-°F, (10.1 W/m-K)

Applicable Specifications

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

Typical Mechanical Properties – Spring Applications

• Annealed
  • Heat Treatment: 1950°F (1066°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: 190 – 220 ksi; (1310 – 1517 MPa)

• Suggested Operating Conditions: -330°F to 750°F (-200°C to 400°C​)

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  Hastelloy® is a registered trademark 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