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Alloy Portfolio

Nickel C-276

Hastelloy C-276 is a highly corrosion-resistant nickel-molybdenum-chromium alloy that belongs to the Hastelloy family of alloys, known for their outstanding performance in aggressive chemical environments. Developed by Haynes International, Hastelloy C-276 is celebrated for its versatility and reliability in challenging applications where corrosion resistance is paramount.

Key Characteristics of NICKEL C-276:

  1. Corrosion Resistance: Hastelloy C-276 is renowned for its exceptional corrosion resistance in a wide range of aggressive chemical environments, including strong acids, chlorides, and reducing conditions.
  2. Versatility: The alloy is highly versatile, making it suitable for applications in various industries where corrosion resistance is a critical factor.
  3. High Temperature Stability: Hastelloy C-276 maintains its mechanical properties and corrosion resistance at elevated temperatures, making it suitable for high-temperature applications.
  4. Excellent Weldability: Hastelloy C-276 is easily weldable using various welding techniques, allowing for ease of fabrication and repair.
  5. Resistance to Pitting and Crevice Corrosion: The alloy has excellent resistance to pitting and crevice corrosion, making it suitable for applications in aggressive environments.
  6. Resistance to Stress Corrosion Cracking: Hastelloy C-276 exhibits good resistance to stress corrosion cracking, which is crucial in applications where metals are subjected to both corrosion and mechanical stress.
  7. Good Fabricability: The alloy is easily fabricated through various processes, including welding, forming, and machining.

Applications of NICKEL C-276:

  1. Chemical Processing: Hastelloy C-276 is widely used in the chemical processing industry for applications such as reactors, vessels, and pipes, where resistance to a wide range of corrosive chemicals is essential.
  2. Petrochemical Industry: Used in various petrochemical applications, including equipment for the production and processing of petrochemicals, where resistance to aggressive chemicals is crucial.
  3. Power Generation: Hastelloy C-276 finds applications in power generation systems, such as components in coal-fired and nuclear power plants, where corrosion resistance and high-temperature stability are critical.
  4. Aerospace Industry: In certain aerospace applications, Hastelloy C-276 may be used due to its corrosion resistance, particularly in components exposed to harsh environments.
  5. Marine Applications: Due to its resistance to chloride-induced corrosion, Hastelloy C-276 is used in marine applications, including components exposed to seawater.
  6. Pharmaceutical Industry: The alloy is employed in pharmaceutical manufacturing equipment where resistance to corrosive chemicals is required.
Here is the chemical composition of Hastelloy C-276, presented in a tabular format:
  • Nickel

    (Ni)

    50.99%

  • Chromium

    (Cr)

    14.5%

  • Molybdenum

    (Mo)

    15.5%

  • Iron

    (Fe)

    4.0% max

  • Cobalt

    (Co)

    2.5% max

  • Tungsten

    (W)

    3.0% max

  • Manganese

    (Mn)

    1.0% max

  • Vanadium

    (V)

    0.35% max

  • Silicon

    (Si)

    0.08% max

  • Carbon

    (C)

    0.01% max

  • Phosphorus

    (P)

    0.04% max

  • Sulfur

    (S)

    0.03% max

Here are the typical mechanical properties of Hastelloy C-276, presented in a tabular format:
Property Value
Tensile Strength 690 MPa (100,000 psi) minimum
Yield Strength (0.2% offset) 310 MPa (45,000 psi) minimum
Elongation 40% minimum
Hardness (Brinell) Not typically specified
Modulus of Elasticity 205 GPa (29,800 ksi)