Inconel is a group of austenitic nickel-chromium-based super alloys produced by Special Metals Corporation. Super alloys are referred to as high performance alloys that function well in environments with elevated temperatures.
Super alloy INCONEL C-276 has high molybdenum content which provides the material with localized corrosion resistance like pitting. This alloy is generally known for corrosion resistance in a wide range of aggressive media. The low carbon content in this alloy helps to reduce carbide precipitation while performing welding.
The following section explains in detail about super alloy INCONEL C-276.
The chemical composition of INCONEL C-276 is outlined in the following table.
|Cobalt, Co||2.5 max|
|Vanadium, V||0.35 max|
|Silicon, Si||0.08 max|
|Phosphorus, P||0.04 max|
|Sulfur, S||0.03 max|
|Carbon, C||0.01 max|
The physical properties of INCONEL C-276 are tabulated below.
|Density||8.89 g/cm3||0.321 lb/in3|
|Melting point||1325 °C||2417 °F|
The following table shows mechanical properties of INCONEL C-276.
|Tensile strength||740.5 MPa||107400 psi|
|Yield strength||347 MPa||50300 psi|
|Elastic modulus||205 GPa||29700 ksi|
|Elongation at break||67%||67%|
The thermal properties of INCONEL C-276 are tabulated below.
|Thermal conductivity (@23°C/73.4°F)||9.80 W/m-K||68.0 BTU in/hr.ft².°F|
Fabrication and Heat treatment
Weldability of INCONEL alloy C-276 is rated as good. This material can be used as-welded for most applications.
Hot working of this alloy can be performed 870 and 1230°C (1600 and 2250°F). in case of performing heavy working, it has to be above 1090°C (2000°F).
INCONEL alloy C-276 can be annealed at 1150-1175°C (2100-2150°F) and rapidly cooled by water quenching.
INCONEL C-276 is chiefly used in the following areas:
Pulp and paper production
Industrial and municipal waste treatment
Recovery of sour natural gas.
Products made using INCONEL C-276 are as follows:
Air pollution control components such as ducts, stack-gas re-heaters, dampers, stack liners, scrubbers, fans and fan housings
Components required in chemical processing such as reaction vessels, heat exchangers, evaporators, and transfer piping.