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
g/L |
Appearance | Atomic Number | Crystal Structure |
| Argon | 1.784 | Colorless gas
Deep Purple when electrified |
18 | Face-centered-cubic |
| Hydrogen
|
.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 |
8 |
Cubic |
