Can Inconel be welded?
Friction welding of Inconel, a high-performance nickel-chromium alloy, is a highly effective and efficient joining process used in various industries. Inconel alloys are known for their exceptional strength, heat, and corrosion resistance, making them ideal for aerospace, power generation, and oil and gas applications. Inconel is available in various grades, compared to stainless steel limitations, but is also more expensive. Rotary friction welding generates heat through friction between two surfaces and applies pressure to create a solid-state bond.
One of the significant advantages of friction welding Inconel is its ability to produce high-quality, defect-free joints. The process is performed without the need for melting the material, minimizing the formation of undesirable porosity, oxides, or voids that can weaken the joint. This results in welds with superior mechanical properties, including high tensile strength.
Friction welding also offers other notable benefits. It is a relatively quick process, with rapid cycle times and minimal post-weld cleaning or finishing required. The process can be automated, providing consistency and repeatability in production. Additionally, friction welding Inconel allows for joining dissimilar metals or alloys, expanding the possibilities for complex engineering designs and multi-material assemblies.
Inconel
Melting Point: 2,350 - 2,460°F | 1,290 - 1,350°C
Thermal Conductivity: 15 W/m-K (watts per meter per kelvin)
Grades: Inconel Alloy 600, 601, 617, 625, Inconel 625 filler metal, 625LCF, 686, 690, 693, 706, 718, 718SPF, 725, 740H, X-750, 75, 783, 22, C-276, G-3, HX, and N06230
