[quote=ASTA]
Actually, they can. Plasmas can retain temparures measured in the millions of Celsius. Unless you're using bullshitium, your metals arent immune to plasma. Even if the armor you're using is respectively thick.
[/quote]

Plasma torch. I'm not talking about futuristic super-length anti-armor cutting tools, I'm talking about a handheld plasma torch of the modern day, which can only cut through about half an inch.

And a plasma bolt, or a plasma cannon, or some other plasma [i]weapon[/i] will very obviously have much more ability against armor than a handheld cutting torch of the modern day.

Nothing is immune to anything, except maybe organic creatures and a disease or virus. Everything is affected by everything, though effectiveness varies