A large industrial refinery with shiny metal structures under a blue sky.

High-Quality Hastelloy® C-276 Solutions

Hastelloy® C-276

UNS N10276

Hastelloy® C-276 is a nickel-molybdenum-chromium super alloy with added tungsten, engineered for outstanding corrosion resistance in highly aggressive environments. Known for its versatility, this alloy performs exceptionally well in both oxidizing and reducing conditions.

Its high nickel and molybdenum content provide superior resistance to pitting and crevice corrosion, especially in reducing atmospheres. Chromium enhances its resistance to oxidizing agents, while the low carbon content minimizes carbide precipitation during welding—preserving corrosion resistance in welded structures.

One of the key advantages of Alloy C-276 is its resistance to grain boundary precipitates in the weld heat-affected zone, making it ideal for as-welded chemical processing applications.

Common Applications

  • Chemical Processing
  • Pollution Control Systems
  • Pulp and Paper Industry
  • Industrial and Municipal Waste Treatment
  • Sour Natural Gas Recovery

Available From Inventory

  • Pipe: Seamless and Welded
  • Tubing: Seamless and Welded
  • Fittings: Butt Weld, Socket Weld
  • Flanges:
  • ½” Through 12”
  • Schedules: 10s, 40s, 80s, 160, and XXH
  • Pressure Fittings (Threaded):
  • ½” Through 6”
  • Ratings: 150#, 300#, 3000#, 6000#
  • Bar: Round, Flat, Hex
  • Plate and Sheet

Specifications

ASTM / ASME Standards

  • B/SB619
  • B/SB622
  • B/SB626
  • B/SB366
  • B/SB564
  • B/SB574

Chemical Composition %

C Co Cr Fe Mn Mo Ni P S Si V W
MaxMaxMaxMaxMaxMaxMax
0.012.514.5-16.54.0-7.01.015.0-17.0Bal0.040.030.080.353.0-4.5

The information above is not warranted, guaranteed, or for design purposes.