Metal Work Crossword

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Across
  1. 2. iron oxide that forms on the surface of steel
  2. 3. Compound that forms on aluminium's surface, protecting it
  3. 7. A mixture of two or more metals (e.g. brass, steel)
  4. 10. Rock or mineral that contains a useful metal
  5. 12. Workshop machine that spins metal so it can be cut or shaped
  6. 13. The main element in ferrous metals
  7. 14. Iron alloyed with a small amount of carbon
Down
  1. 1. Computer ___ Control: automated precision machining
  2. 4. reprocessing old metal to make new products
  3. 5. the ore that Aluminium is extracted from
  4. 6. Property that allows a metal to be hammered into shape
  5. 8. Reddish-brown non-ferrous metal used in electrical wiring
  6. 9. joining metals by melting and fusing them together with heat
  7. 11. Property that lets a metal be drawn out into wire