Product Design AQA
- Created by: izzysalmon
- Created on: 11-03-17 12:00
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- Product Design
- Metals
- Ferrous Metals- Metals that contain iron, and therefore rust.
- Mild Steel- Tough, high tensile strength, can be hardened. Uses- Nuts, bolts, white goods e.g. fridges
- High Carbon Steel- Very strong, harder and harder to form. Uses- springs & high strength wires.
- Medium Carbon Steel- Balances ductility & strength & has good wear resistance. Uses- forging & automotive components
- Cast Iron- Strong but brittle, compressive strength is very high. Uses- castings, manhole covers, engines.
- Stainless Steel- Tough, resistant to rust & stains. Uses-Cutlery & medical instruments
- Non-Ferrous Metals- Metals that do not contain iron and therefore don't rust.
- Aluminium- Ductile, soft malleable, machines well, very light. Uses- Cooking foil, saucepans, window frames & drink cans.
- Copper- Ductile, can be beaten in to shape, conducts electricity & heat. Uses- electrical wiring, tubing kettles, bowls, pipes
- Zinc- Hard & brittle. Uses- Galvanising exterior products to extend lifespan
- Gold- Malleable, ductile, unaffected by air, water, alkalis & acids.
- Titanium- High strength-to-weight ratio, strong metal with a low density. Uses- jewellery, aeronautical application.
- Alloys
- Ferrous Alloys- A mixture of 2 or more metals- at least one of which contains iron.
- Stainless Steel- Tough, resistant to rust & stains. Uses-Cutlery & medical instruments.
- High Speed Steel- Can withstand higher temperatures without losing hardness. Uses- Cutting tools, tool bits on powersaw blades.
- Tool Steel- Hard, resistant to abrasion, hold a cutting edge, resistant to deformation. Uses- Stamping dies, metal cutting tools,
- Non-Ferrous Alloys-Mixture of 2 or more metals- none of which contain iron.
- Brass- Hard, casts & machines well, surface tarnishes, conducts electricity. Uses- Parts for electrical fittings, ornaments.
- Pewter- Malleable, Low melting point (170). Uses-Teapots, sugar bowls, candlesticks, aircraft models, coins
- Bronze- Hard, tough, casts well. Uses- Decorative products, electrical connectors & springs
- Ferrous Alloys- A mixture of 2 or more metals- at least one of which contains iron.
- Ferrous Metals- Metals that contain iron, and therefore rust.
- Polymers
- Thermoplastic Polymers- These materials can be repeatedly reheated & remoulded.
- HIPs-Good impact resistance, good strength & stiffness, lightweight. Uses-Toys, vacuum forming
- HDPE- High density, good stiffness, good chemical resistance. Uses- Crates, bottles, buckets & bowls.
- LDPE- Low density (light weight), low stiffness & rigidity, good chemical resistance. Uses- Detergent bottles, toys, carrier bags.
- PMMA- Food-safe, tough, hard, durable, easily machined. Uses- Light units, illuminted signs.
- PVC- Good Chemical resistance, resistant to weathering, rigid, hard, tough. Uses-Flexible hose.
- PET-Moderate chemical resistance. Uses-bottles for wine/beer, insulation tapes.
- PP- Lightweight, food-safe, good impact resistance even at low temperatures, good chemical resistance. Uses- Kitchen products, medical equipment.
- PS- Lightweight, rigid, colourless, low impact strength. Uses- Packing & disposable cups.
- PS Expanded- Floats, good sound & heat insulator, light weight, low strength. Uses- Packaging, disposable cups/plates, heat & sound insulation.
- Thermoset Polymers-Materials that cannot be repeatedly reheated and remoulded because they have rigid cross links
- Epoxy Resin- High strength when used with glass fibre to create GRP, good chemical resistance. Uses- Adhesives, body panels for cars (GRP).
- Melamine Formaldehyde- Rigid, good strength & hardness, scratch resistance, can be coloured. Uses- Tableware,(outdoors) decorative laminates for work surfaces.
- Thermoplastic Polymers- These materials can be repeatedly reheated & remoulded.
- Metals
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