Gases Used in Plasma Cutting

In plasma cutting, there are two different types of gas. These are the swirl gas which covers the plasma beam, and the plasma gas that is used to generate the beam. Cutting different materials requires the use of different gases. This is because the different properties of each gas will cut the material in a different way.

Name Of Element Density


Appearance Atomic Number Crystal Structure
Argon 1.784 Colorless gas

Deep Purple when electrified

18 Face-centered-cubic


.089 Colorless gas

Violet/Pink when electrified

1 Hexagonal
Nitrogen 1.251 Colorless gas

Reddish Purple when electrified

7 Hexagonal
Oxygen 1.429 Colorless gas

Light Blue when electrified