Tig Welding Inconel – What You Need to Know

Tig welding Inconel is a complex process, but when done correctly, the results speak for themselves. Inconel is a family of nickel-chromium-based superalloys that offer superior performance in extreme environments. It is a highly corrosion-resistant material that is often used in industrial applications such as aircraft engine exhaust systems and gas turbine components.

Tig welding Inconel has always been a challenge for welders due to its high melting temperature and the need for a precise and controlled heat input. However, with the right welding technique and proper preparation, tig welding of Inconel can be successful and yield excellent results.

What You Need to Know Before Starting

Before starting your tig welding project on Inconel, there are a few things that you need to know.

First, the type of welding you are going to use is important. You will need to select a tig welding process that is compatible with the Inconel material you are working with. For example, if you are working with a thin sheet of Inconel, a pulsed tig welding process may be the best choice for you.

Second, you will need to select the right welding filler material. Inconel and its alloys require specific filler rods that are designed to match the material being welded. The filler material should be of a similar composition to the base material, so make sure to select a filler material that is compatible with Inconel.

Finally, you need to use the right tig welding parameters. Inconel is a highly heat-sensitive material, so the welding parameters should be carefully selected to prevent over-heating or distortion of the material. The welding current, arc length, and travel speed should all be carefully monitored throughout the welding process to ensure the best results.

Tips for Welding Inconel

When tig welding Inconel, there are a few tips that can help you achieve the best results.

First, it is important to ensure that the base material is clean and free of any contaminants before starting the welding process. This will help prevent any porosity or other defects from forming during the welding process.

Second, you should use a tig welding machine with a high-frequency start. This will help ensure that the arc stays consistent and avoids any porosity that may occur from an uneven start.

Third, you should use a backgouging technique to ensure complete penetration of the weld. This will help eliminate any incomplete welds and ensure that the weld is strong and free of any defects.


Tig welding Inconel can be a challenging process, but with the right knowledge and preparation, you can achieve excellent results. Make sure to select the right welding process, filler material, and welding parameters, and use the tips above to ensure the best results. With the right technique and preparation, tig welding Inconel can be successful and yield strong and reliable welds.

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