C276: The Ultimate Alloy for Corrosion Resistance

Hastelloy C276

Often simply referred to as C276, is more than just another alloy in the vast world of metallurgy.

It's a nickel-molybdenum-chromium alloy that has carved a niche for itself, primarily due to its unparalleled resistance to corrosion. C276 is highly resistant to harsh and aggressive environments, outperforming other materials even in everyday conditions.

The secret behind its remarkable performance lies in its unique chemical composition. This alloy has nickel, molybdenum, and chromium, which helps it resist corrosion better. But it's not just about the elements present; it's about the precise balance in which they coexist. This balance ensures that C276 remains impervious to a wide range of corrosive agents, from acidic substances to saline environments.

C276 has a strong and durable structure because it combines austenitic and ferritic phases in its dual-phase microstructure. This microstructural advantage, coupled with its chemical robustness, makes C276 a preferred choice for industries that operate under challenging conditions.

C276 is a reliable material for tough environments. It is commonly used in processing plants and offshore drilling rigs. This material can withstand aggressive chemicals, high pressures, and temperatures.

In essence, Hastelloy C276 isn't just about resisting corrosion; it's about delivering consistent performance, longevity, and peace of mind in applications where the stakes are high and the margin for error is minimal.

Applications of C276:

C276 is extensively used across various industries. Its applications span from offshore oil and gas platforms to chemical processing equipment. It's also favoured in the pharmaceutical sector, flue gas desulfurisation systems, and environments that demand high-temperature resilience.

Key Features of C276:

  1. C276 has excellent resistance to corrosion due to its high levels of molybdenum and chromium. It can withstand pitting, crevice corrosion, and stress corrosion cracking.
  2. C276 is a strong and durable choice for various applications, including chemical processing, pharmaceuticals, and high temperatures.
  3. Ease of Fabrication: C276 can be easily fabricated using standard metalworking processes, including welding, forging, and forming.

Chemical Composition of C276:

  • Nickel: Balance
  • Chromium: 15-17%
  • Molybdenum: 15-17%
  • Iron: 4-7%
  • Cobalt: 2.5% max
  • Tungsten: 3-4.5%
  • Manganese: 1% max
  • Carbon: 0.01% max
  • Silicon: 0.08% max
  • Sulfur: 0.03% max
  • Phosphorus: 0.04% max

(Note: The exact composition may vary depending on the manufacturer. Always refer to the manufacturer's data sheet for precise information.)

Physical & Mechanical Properties:

  • Density: 8.1 g/cm3
  • Thermal Conductivity: 17 W/mK
  • Tensile Strength: 800-1000 MPa
  • Yield Strength: 550-750 MPa
  • Elongation: 20-30%
  • Hardness (Brinell): 250-320 HB


Hastelloy C276 is not just another alloy in the vast realm of metallurgical marvels; it stands as a symbol of resilience and reliability. Its unique blend of properties, meticulously engineered over years of research and development, positions it as a frontrunner in the world of corrosion-resistant materials.

At the core of C276's exceptional performance is its unparalleled ability to resist corrosion. But it's not just about resisting rust; it's about doing so under some of the most challenging conditions imaginable.

C276 performs well in harsh conditions. These conditions include the deep ocean with high pressure and salty water. It also performs well in industrial complexes with high temperatures and aggressive chemicals.

What truly sets Hastelloy C276 apart is its balanced composition, which gives it both strength and corrosion resistance. C276 has a dual advantage that allows structures and equipment made from it to thrive. This is especially true in harsh conditions that would quickly damage other materials.

Moreover, its adaptability is evident in its widespread use across various industries. C276 is tough and reliable. It can handle tough conditions like saltwater in subsea drilling and aggressive chemicals in processing plants. It has proven its value many times.

Hastelloy C276 is a symbol of human creativity and the constant quest for greatness, not just a substance. It embodies the promise of longevity, reliability, and consistent performance, making it an invaluable asset to industries worldwide.