Metals

Metals

1. Heat treatments

   • Annealing - heating the metal and leaving it to cool slowly. To make the metal softer
   • Hardening - Heating and rapidly cooling a metal. To make harder.
     • Heated until red hot, then plunged into cold water or oil.
   • Tempering - makes the metal tougher (less likely to break).

2. Finishes

   • Painting
   • Plastic coating
   • Polishing