Wst. 2.4819

UNS N10276

Stock program:
1.5 – 25 mm OD
1/16” – 1.1/2” OD

ASTM B 622/ASTM B 626/ASME SB-622/ASME SB-626
NACE MR0175/ PED 97/23 EC

Maximum service temperature: 1038°C / 1900°F

Alloy C276 is an nickel-molybdenum-chromium super alloy with a small amount of tungsten, designed to have excellent corrosion resistance in a wide range of severe environments. These contents make the nickel alloy C276 especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures.

Characteristics alloy C276:

  • High nickel and molybdenum contents providing good corrosion resistance in reducing environments
  • Resistance to localized corrosion such as pitting and stress-corrosion cracking
  • Excellent resistance to phosphoric acid at all temperatures
  • Alloy C276 exhibit a good resistance to corrosion by seawater especially under crevice conditions

Market applications:

  •    Chemical processes
  •    Oil and gas industry
  •    Pulp and paper production
  •    Very high chloride environments
  •    Pollution control

Technical details

Technical composition (%) Fe Cr Ni Mo Mn Cu Si P C S V
C276 min 4.0 14.5 Bal. 15.0 3.0
max 7.0 16.5 17.0 2.50 4.5 0.80 0.300 0.020 0.350 1.00
Mechanical properties C276
Tensile strenght (mpa, min) nl 690
Yield strength (0.2% offset mpa, min) 290
Elongation (%, min) 40
Density / weight (g / cm3 / kg) 8.88