Significados de known metal en inglés

Aluminium is a light, well- known metal with lots of useful properties.

And it's the little- known metal indium that's the problem.

There is no known metal, and perhaps no substance whatever, which demands so high a temperature to fuse it as does the element carbon.

It is a bradawl, and its handle bears the name of Grandidier, which is that of a man who keeps some well- known metal works.