Analysis of performance parameters of Inconel 686 high temperature alloy
Inconel 686 high temperature alloy is a nickel-based alloy whose chemical composition includes nickel, chromium, molybdenum, titanium, aluminum and other elements. It has excellent high-temperature strength and corrosion resistance, and can operate stably in harsh environments such as high temperature, strong acid, and strong alkali. In addition, Inconel 686 alloy also has good resistance to stress corrosion cracking and oxidation. This makes it widely used in aerospace, petrochemical, energy and other fields. Its chemical composition and physical properties are described in detail below.
The chemical composition of Inconel 686 superalloy is as follows:
Nickel (Ni): 50-60%
Chromium (Cr): 19-23%
Molybdenum (Mo): 15-17%
Iron (Fe): 5-8%
Cobalt (Co): 2-4%
Copper (Cu): 0.5-2.5%
Titanium (Ti): 0.3-0.9%
Aluminum (Al): 0.2-0.8%
physical properties;
Density: 8.95 g/cm³
Melting point: 1340-1390℃
Thermal expansion coefficient: 12.6×10^-6/℃ (20-1000℃)
Thermal conductivity: 11.5 W/(m·K) (20℃)
Resistivity: 1.18×10^-6 Ω·m (20℃)
Modulus of elasticity: 214 GPa (20℃)
Inconel 686 annealed mechanical properties:
Tensile strength: 550 MPa
Yield strength (0.2% offset yield point): 240 MPa
Elongation: 35%
Thermal conductivity: Inconel 686 alloy has good thermal conductivity, can effectively transfer heat, and is suitable for manufacturing high-temperature heat transfer equipment.
Coefficient of thermal expansion: Inconel 686 alloy has a low coefficient of thermal expansion, which allows it to maintain relatively stable dimensions at high temperatures.
Tensile Strength: Inconel 686 alloy has excellent tensile strength at high temperatures and can withstand high loads and severe thermal stress.
Corrosion resistance: Inconel 686 alloy has excellent corrosion resistance and can resist corrosion from corrosive media such as acids, alkalis, and salts, and is suitable for harsh corrosive environments.
Inconel 686 alloy is used in the harshest working conditions, including chemical processing, pollution prevention, pulp and paper, industrial waste and domestic waste treatment. Chemical processing includes heat exchangers, reactors, evaporators and transfer piping. Air pollution prevention and control includes chimney linings, pipes, furnace doors, scrubbers, flue gas reheaters, propellers, and outer covers. Products available include tubes, sheets, plates, strips, round bars, hexagonal bars, wire rods and forgings.
