2470174
Description
Flashcards by Tom Fitzgerald, updated more than 1 year ago
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Created by Tom Fitzgerald
over 9 years ago
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| Question | Answer |
| Types of wood Pine | - Softwood - Light weight, straight grained - Can grow quickly - Soft - |
| Types of wood Birch | - Hard, heavy & close grained - european birch = fine grained, rare & expensive - |
| Types of wood Plywood | - strong - Can be ordered in large sheets - multiple layers mean helps prevent cracking and twisting - |
| Types of wood MDF | - Cheap - Recycled - Can be ordered in large sheets and different thicknesses - No grain |
| Types of wood Oak | - heavy - strong, hard & tough - light coloured - open grained |
| Types of wood Mahogany | - fairly strong - durable - some interlocking grain - pink to red/brown colour |
| Types of wood Beech | - close grained - hard & tough - strong - warps easily |
| Types of wood Ash | - open grained - tough - flexible |
| Types of metals Aluminium | - low density - doesn't corrode |
| Types of metals copper | - good conductor - doesn't react with water - used for electrical wires |
| Types of metals steel | - cheap - strong - used for building materials |
| Types of metals gold | - good conductor - unreactive - expensive - used for circuit boards and jewellery |
| Types of metals steel | low carbon: easily shaped, used for car body panels high carbon: hard, used for cutting tools stainless: resistant to corrosion, used for cutlery and sinks ect. |
| Types of thermoplastics Polyamide | - resistant to chemicals - tough - resists wear - self lubricating |
| Types of thermoplastics Polymethyl methacrylate (acrylic) | - scratches easily - durable - brittle (in small sections) - electrical insulator - polishes well -used for signs, wash basins, baths, aircraft canopies and windows |
| Types of thermoplastics polypropylene | - light - hard - scratches easily - resistant to chemicals - resists work fatigue - used for medical / laberatorty equipment, containers with built in hinges |
| Types of thermoplastics Polystyrene | - Hard - stiff - water resistant - brittle - used for toys (e.g. model kits), packaging etc. |
| composite materials concrete | - versatile, cheap - can be purchased ready mixed - used for brick laying, constructing paths etc. |
| composite materials glass reinforced plastic | - very fine fibres with a small diameter - woven to form a flexible fabric - lightweight - good heat insulator |
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