Liquid Argon

The most important chemical property of argon is its inertness, which makes it an ideal protective gas even at temperatures used in metallurgy or in arc welding. For example, at 200 bar, a gas cylinder contains approximately 7% more argon than expected in case of an ideal gas. Argon gas becomes liquid at a temperature of minus 185.90 C, under normal conditions it is always a gas. Argon is used in liquid form for transport and prior to use is converted to a gaseous state.

This colourless rare gas is odourless. Argon is not toxic, and like nitrogen, can be used as a substitute for breathing oxygen. Moreover, because argon is heavier than air, it can accumulate close to the ground, particularly in valleys.

Gaseous and liquid argon is used as a protective environment for welding, cutting and melting active and rare metals and their alloys, such as aluminium, aluminium and magnesium alloys, stainless chrome-nickel heat resistant alloys and alloy steels of various grades, as well as for refining metals in metallurgy.

 

  
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