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GMAW welding


Metal Inert Gas (MIG) and Gas Metal Arc Welding (GMAW) Capabilities.

Fusion Welding Services

Providing Nadcap accredited fusion welding services, specializing in GMAW (Gas Metal Arc Welding).


The MIG welding process is different than the TIG welding and has different applications in material joining. GMAW's main character is feeding the electrode/filler material continuously through the welding gun. In this case, the electrode is melted and deposited into the base material to create the weld joint. The shielding gas is created from the welding gun as well to help protect the weld from contamination. GMAW uses inert gas as well by using argon and helium and some would use carbon dioxide as it depends on the type of application and the material you are using. The electrode is consumable and mainly comes in spools. According to the American Welding Society, the electrode is identified by the letters ER, and numbers after that present a unique characteristic. Each character is an identification of the wire, and it is strength.

There are different types of metal transfer and they all use different voltages and currents to achieve the best weld results. GMAW has four-metal transfers which are globular transfer, pulsed arc, short-circuiting, and spray transfer. Each method is used based on the material and application used

The wire and the base material have to be clean to produce a quality weld. Any contamination will affect the weld as the GMAW tends to lose more shielding gas than the GTAW. Lack of penetration is another challenge when using the GMAW process however with an experienced welder, the correct set up, and the right method of depositing, penetration can be achieved. We often consider GMAW as the more heavy-duty process as it is designated for structural welding applications. Our team is well qualified and experienced to perform GTAW and GMAW to produce quality, clean, and successful welds.

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“United Technologies Aerospace systems and the Management of this Program want to express a sincere thank you for your focused efforts to support our hardware needs. Working with Lynn Welding has been very rewarding and we really appreciate everything you have done for us."
LUnited Technologies Aerospace Systems
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Tell Us About Your GMAW Welding Project

To learn more about our GMAW Welding capabilities and to receive a quote please submit a request below. All requests for quotes will be fulfilled within 24 business hours!