Adjective
nonferrous (not comparable)
(of a metal or alloy) Containing no iron.
He showed that a magnetic needle, made to oscillate over nonferrous surfaces, such as water, glass, copper, etc., falls more rapidly in the extent of its oscillations according as it is more or less approached to the surface. Source: Internet
Iron extraction at Kremikovtsi and elsewhere is not sufficient to support the domestic steel industry, but copper, lead, and zinc deposits fully supply the nonferrous metallurgy industries. Source: Internet
Russia also contains most of the nonferrous metals. Source: Internet