1. Metals

2. Ferrous metals – contain iron Non-ferrous – contain no iron Alloys – a mixture of two or more metals

3. Ferrous metals Will rust Often mixed with carbon and other metals Available in sheet, rod, flat, tube, angle… Mild Steel Stainless Steel Cast Iron High Speed Steel

4. Non-ferrous metals Do not rust Often used in alloys Often used for plating or coating onto other metals Available in sheet, rod, flat, tube angle… Copper Aluminium Tin Zinc

5. Alloys Typical alloys: Brass – 65%copper/35%zinc Pewter – Mainly tin with antimony and copper LM4 – 92% aluminium/3% copper/5% silicon

6. The Environment Non renewable resource Can be recycled especially Aluminium Energy intensive manufacturing processes