Значения термина nonmetal на английском

At the same time, other high-stretchable nonmetal materials such as conductive polymers generally have a limitation of low electroconductivity, restricting their further applications.

It's been a while since my nonmetal days, and I've kind of forgotten how this goes, but I bet I can figure it out.

Hoping that the nonmetal handle would interrupt a lethal electrical shock, in seconds I was hacking at the conduit like a demented ax murderer.