Section 3 Flashcards
dt gcse
What is hardwood?
Comes from broad-leaved, deciduous trees. Examples include: ash, beech, birch, mahogany, oak, and teak. Takes about 100+ years to mature.
What is softwood?
Comes from coniferous trees which are evergreen, cone-bearing trees including cedar and pine. Takes about 30+ years to mature.
What are the properties and uses of ash?
Light, creamy-brown colour, tough and flexible. Used for sports equipment, wooden ladders, and tool handles.
What are the properties and uses of beech?
White to pinkish-brown colour, hard, tough, strong, warps easily. Used for furniture, toys, and tool handles.
What are the properties and uses of mahogany?
Pink to reddish-brown color, tough, durable, resists splitting, durable in water. Used for good quality furniture.
What are the properties and uses of oak?
Light brown colour, strong, hard, tough, corrodes steel. Used for interior woodwork and good quality furniture.
What does deciduous mean?
Loses its leaves.
What does evergreen mean?
Doesn’t lose leaves and stays green all year round.
What are the properties and uses of teak?
Strong, durable, resistant to moisture, dark in colour. Used for outdoor furniture, traditional science labs, and boats.
What does ferrous mean?
Contains iron.
What does non-ferrous mean?
Doesn’t contain iron.
What is an alloy?
A mixture of two or more metals to improve and get a mix of their properties.
What are the properties and uses of cast iron?
Melting point at 1200°c, hard skin, softer underneath, brittle, corrodes by rusting. Used for parts with complex shapes.
What are the properties and uses of mild steel?
Melting point at 1600°, tough, ductile, malleable, good tension, poor corrosion resistance. Used for general purpose engineering material.
What are the properties and uses of high carbon steel?
Melting point at 1800°c, very hard, brittle, can be heat treated. Used for cutting tools and ball bearings.
What are the properties and uses of stainless steel?
Melting point at 1400°c, hard, tough, resistant to wear and corrosion. Used for cutlery and kitchen equipment.
What are the properties and uses of aluminium?
Melting point at 660°c, pure, good strength to weight ratio, light, soft, ductile, good conductor. Used for kitchen equipment, window frames, and general cast components.
What are the properties and uses of copper?
Melting point at 1080°c, pure, malleable, ductile, good conductor, resistant to corrosion. Used for water pipes, electrical wires, and decorative goods.
What are the properties and uses of brass?
Melting point at 900-1000°c, alloy, resistant to corrosion, fairly hard, good conductor. Used for ornaments, cast items such as water taps.
What are the properties and uses of tin?
Melting point at 230°c, pure, soft, weak, malleable, ductile, resistant to corrosion. Used for coating steel as tin plate, soft solder.
What are thermo plastics?
Can be reheated and reformed, making them recyclable. When heated, they have memory and will try to return to their original shape. When heated they’re soft and pliable. Examples include: PET, HDPE, PVC, LDPE, PP, PS, HIPS, PMM acrylic, nylon, and ABS.
What are thermosetting plastics?
Made with covalent bonding. They can’t be reformed. Examples include: epoxy resins, melamine formaldehyde, phenol formaldehyde, polyester resins, urea formaldehyde.
