Plasma can be used to cut any electrically-conductive metal, including stainless steel, aluminum, copper and brass. In contrast, oxyfuel cuts by creating a chemical reaction between the oxygen and the iron in mild steel, so it can only be used to cut mild (carbon) steel.
(Click for larger photos)
Vessel fabrication with a Powermax85

M85 machine torch on a Powermax85

Gouging with a Powermax1650

Creating metal art with a Powermax30

Shipbuilding with a Powermax45

Powermax system with FineCut consumables

Bevel cutting with an HPR260

Cutting flanges with an HSD130

Greater productivity with the HSD130

Powermax105 in use for vessel fabrication

Samples of different metals cut with plasma

Part cut with the HyPerformance HPR400XD
Additionally, plasma systems can be used to gouge,
mark, or cut rusty, painted, or even stacked metal. In addition, you can bevel cut or cut expanded metal with plasma, both of which are difficult to cut with oxyfuel.
"They're a lot quicker . . . And they cut anything."
Mike Morse, Quality Control Manager
Superior Fabrication