Materials Flashcards
What are hardwoods
Trees which stop growing in winter (deciduous)
What’s more expensive hardwood or softwood
Hardwood
What are softwoods
Trees which grow all year (coniferous)
What are manufactured boards often made from
Waste wood, low grade or recycled timber
What is a veneer
A thin slice of more expensive wood, which typically covers a cheaper manufactured board
On average how long does it take softwoods to grow
25 years
What colour is ash, and what properties does it have
It is pale, and is flexible
What colour is beech and what are its properties
Beech is pink, and is very durable
What colour is mahogany and what are its properties
Deep reddish brown, very durable
What colour is pine what are its properties
Pine is pale yellow, and is lightweight and easy to work with
Name 3 softwoods
Pine, Spruce and Larch
What are ferrous metals
Metal containing iron
Qualities of ferrous metals
they rust
the are magnetic
Name 3 ferrous metals
Mild steel
Steel
Cast iron
What are Non-ferrous metals
metals which do not contain iron
Qualities of non ferrous metals
Not magnetic
Do not rust
3 Non ferrous metals
Copper
Gold
Silver
What are alloys
2 or more metals mixed together
2 Alloys
Brass
Stainless steel
Qualities of aluminium
Lightweight, strong, ductile
What type of metal is aluminium
non ferrous
Qualities of copper
When oxidised, turns green
very good electrical conductor
What are thermoforming polymers
Polymers which can be re heated and shaped multiple times
What are some uses of thermoforming plastics
Vacuum forming
Blow moulding
