(of a metal) containing little or no iron.
noting or pertaining to metals other than iron or steel.

1885–90; non- + ferrous Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
nonferrous (ˌnɒnˈfɛrəs)
1.  denoting any metal other than iron
2.  not containing iron: a nonferrous alloy

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
It's not full out creepy but it's not exactly respected: the lurking about
  hunting for nonferrous carrion.
Nonferrous slags are produced during the recovery and processing of nonferrous
  metal from natural ores.
Scrap metals, in general, are divided into two basic categories: ferrous and
Nonferrous scrap metal is scrap metal other than iron and steel.
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