C-276
UNS #N10276
C-276 is a nickel-molybdenum-chromium-tungsten alloy with excellent general corrosion resistance and good fabricability. The alloy should be considered for use in environments where resistance to hot contaminated mineral acids, organic and inorganic chloride-contaminated media, chlorine, formic and acetic acids, acetic anhydride, sea water, and brine solutions is desired. C-276 has resisted the formation of grain boundary precipitates in the weld heat-affected zone, making it a candidate for most chemical and petrochemical processing applications in the as-welded condition. The alloy has resisted both general and localized corrosion, including pitting, crevice corrosion, and stress corrosion cracking. C-276 is readily fabricated by welding, using methods similar to those utilized for nickel-based alloys.
Type Analysis
- Carbon (Maximum) 0.02
- Phosphorus (Maximum) 0.03
- Silicon (Maximum) 0.08
- Nickel (Nominal) Balance
- Tungsten (Nominal) 3.00-4.50
- Manganese (Maximum) 1
- Sulfur (Maximum) 0.03
- Chromium (Nominal) 14.50-16.50
- Molybdenum (Nominal) 15.00-17.00
- Iron (Nominal) 4.00-7.00
- Vanadium (Maximum) 0.35
- Cobalt (Maximum) 2.5
