In comparison, oxy cutting will only work on metals that contain iron, as it works through chemical reactions, such as oxidisation (it’s like a sped-up version of rusting) instead. Plasma can cut through anything electrically conductive steel, stainless steel and aluminium are all fair game. Plasma cutting (plasma arc cutting), therefore, is a melting process that uses plasma and an outside power source to create an electric arc between the electrode and the metal being cut to melt and eject it from the cut.
It’s formed when compressed air or compressed gases (like nitrogen or argon) make contact with the electrode (which is inside the torch) and ionise to create plasma. Plasma is a super-heated column of gas (and the fourth state of matter).
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