Key Considerations When Choosing the Correct Gas for MIG Welding

Published on 26 February 2024

5 min

Choosing the Right Gas for MIG Welding: Factors to Consider

MIG welding is a process of welding that has been around since the 1940s. The process uses a wire that acts as an electrode to join two pieces of metal.
One crucial aspect of MIG welding is the choice of gas used in the process. The right gas for MIG welding ensures that the process is efficient and produces high-quality welds.
There are various types of gas-based consumables involved - helium or argon gas tanks, carbon-dioxide+argon blend gas tanks, shielding gas for MIG welding and so on. Therefore, it is important to know how to choose the right gas type for MIG welding
Let us look at the factors to consider when choosing the right gas for a MIG welder.

Factor 1: Type of Metal being Welded

One of the most critical factors to consider when choosing the right gas for MIG welding is the type of metal being welded. Different metals require different gases to produce high-quality welds.
For instance, if you are welding aluminium (MIG aluminium gas welding) or other non-ferrous metals, you will need to use a gas that contains helium or argon. On the other hand, if you are welding steel, you will need to use a gas that contains a blend of carbon dioxide and argon.
Knowing the type of metal being welded is crucial in determining what kind of gas a MIG welder uses.

Factor 2: Thickness of the Metal being Welded

Another factor to consider when choosing the right gas for a MIG welder is the thickness of the metal being welded. Thick metals require more heat, and as such, they require a gas that can produce a hotter flame.
For instance, if you are welding thick steel, you may need to use a gas that contains a higher percentage of carbon dioxide to produce a hotter flame.

Factor 3: Cost of the Gas

The expense towards purchasing the gas will determine what kind of gas a MIG welder uses. The cost of the gas varies depending on the type of gas and the supplier. It is essential to shop around for the best prices and to compare the cost of different types of gas.
However, it is important not to compromise on the quality of the gas for the sake of cost.

Factor 4: Availability of the Gas

The availability of the gas does impact its usability in MIG welding. Some gases may not be readily available in your area, and as such, it may be challenging to obtain them.
It is important to research the availability and accessibility of various welding gases before finalising one for your MIG welding process.

Conclusion

Choosing the right gas for MIG welding is crucial in producing high-quality welds. Take into account the factors mentioned above and choose the right gas for your MIG welding needs.
If you are looking for high-quality welding solutions, check out D&H Sécheron. We offer a wide range of welding consumables for a variety of welding techniques.
Contact us today to find out more.

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