METALS

METALS

1. Characteristics

   • Conductor materials
   • Can be melted easily
   • Very dense
   • Reflect light
   • Solid at room temperature (except mercury)
   • Can be mixed with other metals to improve their properties

2. Simple metals

   • Iron
   • Copper
   • Silver
   • Tin
   • Gold
   • Mercury
   • Lead

3. Alloys

   • An alloy is a combination of several elements, at least one of wich is a metal.
   • Bronze
     • Copper and tin
   • Brass
     • Copper and zinc
   • Steel
     • Iron and carbon
   • Stainless steel
     • Steel and 10% chromium

4. Technological progress

   • Castability
   • Weldability
   • Ductility
   • Malleability
   • Foldability
   • Machinability

5. Obtaning metals

   • Open-pit mines
   • Underground mines

6. FERROUS METALS

   • Contain iron
     • Pure iron
       • Blast furnaces -> to remove impurities from the iron
     • Cast iron
     • Steel
       • Stainless steel

7. NON FERROUS METALS

   • Without iron

8. Metalworking

   • Tools
     • Drilling tools
     • Filing tools
     • Cutting tools
   • Joints
     • Permanent Joints
       • Soldered joints
       • Welding
       • Riveted joints
     • Temporaty joints
       • screws & nuts
   • Other types
     • Forging
     • Miling
     • Turning
     • Wire drawing
     • Rolling
     • Stamping
     • Die cutting