Talk:Toaru Kagaku no Railgun S Episode 20/@comment-5230978-20130831111740/@comment-49.144.2.13-20130901060202

It's called composite materials. It's either made with carbon fiber, fiberglass, or other non-metal alloys. It's also possible to be made from Aluminum alloy. You should know that aluminum isn't magnetic, which is why most modern aricrafts are made from aluminum + composite to make it lightweight. There are bunch of metals that aren't magnetic btw, eg. copper. Also, this is a real life fact.

This isn't new, as to so they make suits from Aluminum to anticipate espers that have powe over magnetism.