Non ferrous metals

• What materials have been used for thousands of years along with metals?

  Woods
• Why are metals suited to different jobs?

  Because they have a variety of useful characteristics/properties
• What are the main categories of metals?

  • Ferrous Metals
  • Non-Ferrous Metals
  • Alloys
• Name some examples of ferrous metals.

  • Cast Iron
  • Steels
  • Mild Steel
  • Stainless Steel
• Name some examples of non-ferrous metals.

  • Aluminium
  • Copper
  • Tin
  • Lead
• What is brass classified as?

  Non-ferrous alloy
• What defines non-ferrous metals?

  They do not contain iron
• What is the melting temperature of aluminium?

  660°C
• What is the melting temperature of copper?

  1083°C
• What are common uses and properties of aluminium?

  • Used in kitchenware, such as saucepans
  • Excellent conductor of electricity when drawn into wire
  • Used in overhead power cables
• What are common uses of copper?

  • Electrical contacts
  • Domestic pipework for central heating and water
  • Used in jewellery
• Why are non-ferrous metals often more expensive than ferrous metals?

  Due to their desirable properties
• What are the desirable properties of non-ferrous metals?

  • Lightweight
  • Good conductivity
  • Ductile and malleable
  • Resistant to corrosion
• What is the purpose of galvanising iron and steel?

  To add a protective coat of zinc to help prevent rusting
• How are alloys created?

  • By mixing two or more metals together
  • To give the new alloy a combination of the properties of the original metals
• What is an example of a non-metal that can be added to alloys?

  Silicon
• What are the benefits of creating alloys?

  • Changes the melting point
  • Changes colors
  • Increases strength, hardness, and ductility
  • Enhances resistance to corrosion and oxidation
  • Changes electrical/thermal properties
  • Improves flow properties for better castings
• What is the base metal used in the structural components for aircraft?

  Copper
• What is produced by alloying steel with chromium and nickel?

  Stainless steel
• What are the properties of stainless steel?

  • Good corrosion resistance
  • Hardness
  • Strength
  • Toughness
• What elements are commonly used to alloy steel to produce stainless steel?

  Chromium and nickel
• What are the main characteristics of stainless steel?

  Good corrosion resistance, hardness, strength, and toughness
• What happens to most metals, including steel, when heated?

  They become less hard and more ductile
• What is the purpose of alloying steel with tungsten, chromium, and cobalt?

  To produce high-speed steels that retain cutting edges at working temperatures
• What are the common uses of stainless steel?

  • Sinks
  • Cutlery
  • Sanitary-ware
• What are the properties of hard materials?

  • Resist deformation, indentation, or penetration
  • Resist abrasion, drilling, impact, scratching, and wear
• What is ductility in materials?

  The ability of a material to deform by bending, twisting, or stretching without breaking
• How does ductility change with heat in metals?

  Ductility increases with heat
• What is malleability in materials?

  The ability of a material to be permanently deformed in all directions without fracture
• How does temperature affect malleability?

  Malleability increases with temperature
• What does conductivity measure in materials?

  The ease at which an electric charge or heat can pass through a material
• What is the definition of conductivity?

  The measure of the ease at which an electric charge or heat can pass through a material
• What are the key properties of materials discussed in the study material?

  • Hardness
  • Ductility
  • Malleability
  • Conductivity
• What is a property of aluminium?

  Lightweight and malleable
• Why is copper considered an excellent electrical conductor?

  Because it conducts heat and electricity very well
• What happens to copper when it oxidizes?

  It turns into a green color
• What is one use of aluminium?

  It is used for drink cans
• What is one use of copper?

  It is used for plumbing fittings
• What is a property of metals in general?

  They are strong and corrosion resistant
• What are the properties of metals mentioned in the study material?

  • Lightweight
  • Malleable
  • Strong
  • Good conductor of heat
  • Corrosion resistant