Alloys

• What is an alloy?

  A mixture of metals and/or other elements
• Two alloys of copper

  Brass Bronze
• What is Bronze made out of?

  Copper and tin
• What us brass made out of?

  Copper and Zinc
• What is brass used for?

  Instruments
• What is Bronze used for?

  Medals and coins
• What is 24 carat gold?

  Pure gold
• What is 18 carat gold?

  75% gold 25% silver and nickel
• What is gold used for?

  Jewellery
• Characteristics of high carbon steel

  • High strength
  • Very hard
• What is high carbon steel used for?

  Tools, springs and wires
• Characteristics of low carbon steel

  • Ductile
  • Malleable
  • Relatively lower strength compared to high carbon steel
• What is low carbon steel used for?

  Car parts, pipes and food cans
• What is stainless steel made of?

  Iron and carbon
• Characteristics of stainless steel?

  • Hard
  • Resistant to corrosion
• What is stainless steel used for?

  Cutlery
• Properties of aluminium alloys

  • High strength to weight ratio
  • Resistant to corrosion
• What are aluminium alloys used for?

  Cookware and Packaging