Alloy C-276

Principal Design Features: C-276 is a wrought corrosion-resistant alloy. A prime advantage of this alloy is that it generally does not require solution heat treatment after welding. It resists the formation of grain boundary precipitates that would degrade corrosion resistance.

Partial List of Applications: Chemical process equipment and desulfurization of flue gas equipment.

Machinability: Good machinability, although the alloy work hardens as is true of the nickel base alloys in general.

Forming: Can be cold worked by all conventional methods.

Welding: Weldable by all common methods except that excessive heat input should be avoided. Can be used in the “as-welded” condition without further heat treatment for most corrosive applications.

Alloy C-276 Chemistry

Carbon0.02 max
Chromium14.5 - 16.5
Cobalt2.5 max
Iron4 - 7
Manganese1 max
Molybdenum15 - 17
Phosphorus0.03 max
Silicon0.08 max
Sulphur0.03 max
Tungsten3 - 4.5
Vanadium0.35 max

Alloy C-276 Physical Data

Density (lb / cu. in.)0.321
Specific Gravity8.89
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])0.102
Electrical Resistivity (microhm-cm (at 68 Deg F))779
Melting Point (Deg F)2500
Thermal Conductivity78
Mean Coeff Thermal Expansion6.2
Modulus of Elasticity Tension29.8


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