Materials Flashcards
Materials
Wood
Hardwoods - slow growing, expensive (balsa, jelutong)
Softwoods - fast growing, cheap, easy to cut (pine)
Materials
Plastics
Thermoplastics - plastics which can be re-heated
Acrylic, styrofoam, expanded polystyrene, polyethylene (PET), polypropylene (PP), polyvinyl chloride (PVC)
Thermosetting - plastics which cannot be re-heated
Materials
Metal
Ferrous - metals containing iron (steel)
Non-ferrous - mats not containing iron (aluminium, tin)
Materials
Glass
Raw materials are Quartz sand, limestone and soda heated and either pressed or blown
Materials
Composites
MDF (medium density fibreboard) - fibres of soft wood formed under pressure to make smooth sheets
Carbon fibre - fine strands of carbon woven into a fabric sheet. Extremely thin but extremely strong
Materials
Paper
GSM - grams per square meter
Tracing, cartridge, copier, folding box board, corrugated board