Argon 16.9kg Air Products

(An empty Air Products cylinder is required for exchange)

Argon gas is used as the shield gas in TIG welding. TIG is an acronym for Tungsten Inert Gas, and it's called this because the heat source is electrified tungsten, and the weld is shielded from the air by an inert gas, argon gas, meaning the gas is not flammable or corrosive, and it prevents oxidizing.

Argon (Ar) is a monatomic, chemically inert gas which constitutes slightly less than 1% of the air. Its gaseous specific gravity is 1.38 and its boiling point is -302.6°F (-185.9°C). Argon is colourless, odourless, tasteless, non-corrosive, non-flammable, and non-toxic. Commercial argon is the product of cryogenic air separation, whereby liquefaction and distillation processes are used to produce a low-purity ‘crude’ argon product which is then purified to produce the commercial product. Argon is used primarily for its properties as an inert gas in applications such as arc welding, steel-making, heat treating, and electronics manufacturing.

You can use 100% Argon to MIG weld steel but this welding gas comes with many pros and cons. It is best to use a combination of the MIG welding gases in order to get the best results for your specific project. Argon is one of the four gases used in MIG welding.