Alloy C276

C276, commonly known as HASTELLOY®, is a solid-solution- strengthened, nickel-molybdenum-chromium alloy with a small amount of tungsten, which exhibits excellent corrosion resistance in an assortment of harsh environments. C276 is known as the most universally corrosion resistant material available today. It is used in a variety of environments from moderately oxidizing to strong reducing conditions. Industries where C276 can be utilized are petrochemical and chemical processing, power generation, pharmaceutical, pulp and paper production and waste treatment to name a few.

UNS: N10276
Stock Sizes: 1/8” – 1” OD


  • Seamless Tube: ASTM B622
  • NACE MR0175/MR0103

Available Processing:

  • Cold Worked and Bright Annealed

Common Testing: Eddy Current, Flare, Flattening, Positive Material Identification

Chemical Composition (%)

Iron (Fe)4-7%
Chromium (Cr)14.5-16.5%
Nickel (Ni)Balance
Manganese (Mn)1% Max
Silicon (Si)0.08% Max
Carbon (C)0.010% Max
Sulfur (S)0.03% Max
Molybdenum (Mo)15-17%
Tungsten (W)3-4.5%
Cobalt (Co)2.5% Max
Vanadium (V)0.35% Max
Phosphorus (P)0.04% Max

Physical Properties

Density (lb/in3)0.321
Elongation (min %)40
Minimum Yield (psi) – Gr. 141,000
Minimum Tensile (psi) – Gr. 2100,000
Max Hardness (HRB)100