hardwoods, metals and plastic: properties and uses 0.0 / 5 ? Design & Technology: Resistant MaterialsMaterials GCSEOCR Created by: Ciana dsouzaCreated on: 20-06-17 10:02 Hardwood shed leaves in summer 1 of 33 Beech withstands weather conditions- chairs, toys and flooring 2 of 33 Ash very flexible and finishes well - hockey sticks, sports equipment 3 of 33 Elm warps easily, cross grain makes it difficult to work-indoor and outdoor furniture 4 of 33 teak expensive,natrual oils make it resistant to fire-lab benches 5 of 33 ferrous metals contain iron- will rust 6 of 33 alloy mixture of 2 or more elements 7 of 33 cast iron hard outside and soft inside, canno be bent or forged- vices, crushing machines 8 of 33 mild steel malleable,corrodes easily- car bodies, nails and screws 9 of 33 high- carbon steel hard, tough not ductile- taps,dies,screwdrivers, hammers 10 of 33 stainless steel does not corrode, difficult to work - sink,dishes,cutlery 11 of 33 high-tensile steel hard,tough- engine parts, turbines and gears 12 of 33 non-ferrous metals do not contain iron 13 of 33 duralumin ductile, hard when worked,light- aircraft and car parts 14 of 33 gliding metal attractive, solers easily - jewellery, metalwork 15 of 33 brass god conductor, resistance to corrson - coins, valves, bearings 16 of 33 copper mallable,goood conductor- circuits, conducts well 17 of 33 tinplate non-toxic, bends well, strong - cans, light metal work 18 of 33 thermoplastics can be heated again and again and will return to its original shape 19 of 33 LDPE range of colours, good insulator- squeezy boottles, bags 20 of 33 HDPE range of colours, stiff, high impact strength - milk crates, buckets 21 of 33 UPVc chemical and weather resistance - pipes, window frames 22 of 33 Polystyrene water resistaance, safe with food, hard,stiff -dispsable cups, food containers 23 of 33 Polypropylene can be sterillised, resistant to work faitigue - syringes, string, containers 24 of 33 Nylon resistant to chemicals, hard, tough - clothing, combs 25 of 33 Acrylic scratches easily, durable, cheaper alternative to glass - perspex, illuminated signs 26 of 33 ABS hard, tough, good appearance- lego, helmets 27 of 33 thermosetting plastics can oly be heated and modellde once 28 of 33 Urea- Formaldehyde good insulator, brittle,range of colours- wood glue, white electrical fittings 29 of 33 Melamine- fomaldehyde range of colours, oudourless- tableware,laminates 30 of 33 Phenol formaldehyde stiff, brittle, heat-resistant- saucepan and kettle handles 31 of 33 Epoxy resin good insulator, resits heat- bending, adhesive 32 of 33 polyester resin becomes tough with glass fibre- car bodies,chair shells 33 of 33
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