Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in the Earth’s atmosphere at 0.9%
Argon is the most common shielding gas, widely used as the base for the more specialized gas mixes. Argon is used when welding to displace oxygen around the weld to prevent it from oxidizing.
• Metal Inert Gas (MIG) and Tungsten Inert Gas (TIG) welding
• Inert atmospheres
• Filler gas in incandescent and neon lamps
• Plasma cutting
• Gas chromatography