Alloy C276 nickel alloy plate (UNS N10276) is an austenitic nickel-molybdenum-chromium alloy with a small addition of tungsten. It is one of the premier corrosion resistant materials available for process industries. Alloy C276 nickel alloy plate has excellent corrosion resistance in both oxidizing and reducing environments.
The combination of the high molybdenum and chromium content, along with the addition of tungsten, make Alloy C276 nickel alloy plate highly resistant to chloride stress corrosion cracking, pitting, crevice corrosion and general corrosion.
Alloy C276 nickel alloy plate can operate in oxidizing atmospheres up to 1900oF (1038oC), however, the alloy lacks sufficient chromium content to operate successfully in the most strongly oxidizing environments like hot, concentrated nitric acid.
The low carbon content of Alloy C276 nickel alloy plate enables the alloy to be utilized in the as-welded condition. It cannot be hardened by heat treatment, but can be hardened by cold working. The alloy has a higher work-hardening rate than the austenitic stainless steels which should be taken into consideration.
Alloy C276 nickel alloy plate can be easily welded and processed utilizing standard shop fabrication practices for austenitic stainless steels and nickel based alloys.
Weight % (all values are maximum unless a range is otherwise indicated)
|Molybdenum||15.0 min.-17.0 max.||Carbon||0.01|
|Chromium||14.5 min.-16.5 max.||Vanadium||0.35|
|Iron||4.0 min.-7.0 max.||Phosphorous||0.04|
|Tungsten||3.0 min.-4.5 max.||Sulfur||0.03|
0.102 BTU/lb-°F (70°F)
427 J/kg-°K (20°C)
Modulus of Elasticity
29.8 x 106 psi
Thermal Conductivity 212°F (100°C)
2415 – 2500°F
1325 – 1370°C
51 Microhm-in at 75°C
1.30 Microhm-cm at 24°C
Mean Coefficient of Thermal Expansion
|200||93||6.8 x 10-6||12.24 x 10-6|
|400||204||7.0 x 10-6||12.60 x 10-6|
|600||316||7.2 x 10-6||12.96 x 10-6|
|800||427||7.4 x 10-6||13.32 x 10-6|
|1000||538||7.8 x 10-6||14.0 x 10-6|
|1200||649||8.2 x 10-6||14.8 x 10-6|
|1400||760||8.5 x 10-6||15.3 x 10-6|
|1600||871||8.8 x 10-6||15.8 x 10-6|
|1700||927||9.0 x 10-6||16.2 x 10-6|
Typicals Values at 68°F (20°C)
in 2 in.
|psi (min.)||(MPa)||psi (min.)||(MPa)||% (min.)||(max.)|
|41,000||283||100,000||690||40||100 Rockwell B|