metal

• What do ferrous metals contain?

  Iron and other elements
• Which ferrous metals are known to be magnetic?

  Mild steel, cast iron, and tool steel
• What processes are involved in converting ore into usable material?

  • Washing
  • Grading
  • Crushing
• What is produced when iron ore is refined in a blast furnace?

  Pig-iron
• What are examples of ferrous metals and alloys?

  • Mild steel
  • Medium carbon steel
  • High carbon steel
  • Stainless steel
  • Iron
  • Cast iron
• What do non-ferrous metals contain?

  No iron
• Name some examples of non-ferrous metals.

  Aluminium, copper, brass, zinc
• What are the common forms in which metals are supplied?

  • Sheet form
  • Round section
  • Round tube
  • Hexagonal section
  • Square section
  • L-section
  • Hexagonal tube
  • Square tube
  • L-section tube
• What is the purpose of beams in construction?

  To span distances between walls
• What is the most plentiful metal in the Earth's crust?

  Aluminium
• Why is aluminium significant in the non-ferrous category?

  It has high production output
• From what does aluminium come?

  Hydrated form, Bauxite
• What are alloys?

  • Mixture of two or more metals
  • Formed with other elements
  • Create new metals with improved properties
• What are the two groups of alloys?

  • Ferrous alloys
  • Non-ferrous alloys
• What is an example of a ferrous alloy?

  Stainless steel
• What is an example of a non-ferrous alloy?

  Brass
• How are properties of alloy steel improved?

  By adding other metals
• What is the melting point of cast iron?

  1200°C
• What is the composition of stainless steel?

  10.5%-18% chromium and nickel
• What are the properties of alloy steel?

  • Increased hardness
  • Maintains hardness at high temperatures
  • Used for cutting tools and drill bits
• What are the properties of aluminium?

  • High strength-to-weight ratio
  • Light, soft, and ductile
  • Good conductor of heat and electricity
• What are the uses of various metals?

  • Heavy machinery: Cast iron
  • Cutlery: Stainless steel
  • Fasteners: Mild steel
  • Cutting tools: High-speed steel
  • Packaging: Aluminium
• What is the melting point of copper?

  1083°C
• What is the melting point of zinc?

  232°C
• What are the characteristics of cast iron?

  • Hard skin, brittle soft core
  • Strong under compression
  • Self-lubricating
• What are the characteristics of stainless steel?

  • Corrosion-resistant
  • Increased hardness
  • Easily joined
• What are the characteristics of mild steel?

  • Tough, ductile, and malleable
  • High tensile strength
  • Poor corrosion resistance
• What are the characteristics of high-speed steel?

  • Very hard, resistant to frictional heat
  • Maintains hardness at red heat
  • Used for cutting tools
• What are the characteristics of aluminium?

  • Light, soft, and ductile
  • Good conductor of heat and electricity
  • Corrosion-resistant
• What are the characteristics of brass?

  • Malleable, ductile, tough
  • Good conductor of heat and electricity
  • Corrosion-resistant
• What are the characteristics of zinc?

  • Very weak, poor strength-to-weight ratio
  • Extremely resistant to atmospheric corrosion
  • Low melting point
• What are the uses of aluminium?

  • Kitchen utensils
  • Packaging
  • Window frames
• What are the uses of copper?

  • Electrical wiring
  • PCB boards
  • Plumbing
• What are the uses of brass?

  • Musical instruments
  • Plumbing fittings
  • Decorative items
• What are the uses of zinc?

  • Galvanizing steel
  • Dustbins
  • Rust-proof paints
• What are the uses of cast iron?

  • Heavy machinery
  • Car brake drums
  • Vices
• What are the uses of stainless steel?

  • Cutlery
  • Sinks
  • Dishes
• What are the uses of mild steel?

  • Nails
  • Screws
  • Car bodies
• What are the uses of high-speed steel?

  • Lathe cutting tools
  • Drill bits
  • Milling cutters
• What are the uses of aluminium alloys?

  • Aircraft components
  • Automotive parts
  • Structural applications