RM materials

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  • R.M materials
    • Plastics
      • Thermoset plastic
        • Can only be heated and shaped once.
      • Thermoplastics
        • can be heated and shaped many times.
    • composite materials
      • Are formed by combining and bonding 2 or more materials.
      • MDF
        • Density of fiberboard.
      • Alloys
        • mixtures of 2 or more metals
    • Metals
      • Ferrous
        • contain iron
      • Non-ferrous
        • dose not contain iron
    • woods
      • Hardwoods
        • From trees that shed their leaves  in the winter.
        • E.G. oak, beech, ash, maple, cherry
        • Properties:
      • Softwoods
        • Are from coniferous tress which have needles instead of leaves.
        • E.G. pine, redwood
        • Properties:  less dense, less durable.
  • engineered wood made of compressed wood and fiber partials held together with glue.
    • MDF
      • Density of fiberboard.
  • A pure metal is an element eg iron, copper, gold
    • Metals
      • Ferrous
        • contain iron
      • Non-ferrous
        • dose not contain iron

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