Paper 1 Unit 2 Classification of Materials
Classification of Materials - Answer>> Metals
Woods
Polymers
Papers and Boards
Composites
Smart Materials
Modern Materials
Metals - Answer>> Ferrous
Non-ferrous
Alloy
Ferrous - Answer>> A metal containing mostly iron and carbon.
They are magnetic and rust.
Non-ferrous - Answer>> A metal that doesn't contain iron, not
magnetic and do not rust.
Non-ferrous Metals - Answer>> Aluminium, copper, zinc, silver,
gold, titanium, tin.
Ferrous Metals - Answer>> Low carbon steel, medium carbon
steel, cast iron.
Alloy - Answer>> A metal made of two or more metals, or
combining two or more elements, one which must be a metal.
They can also be sub-categorized as ferrous and non-ferrous.
Alloy Metals - Answer>> Ferrous - stainless steel, die steel (tool
steel)
, Non - Ferrous - Bronze, brass, duralumin, pewter
Woods - Answer>> Hardwood
Softwood
Manufactured Board
Hardwood - Answer>> A wood from broad-leafed trees. Slow
growing and lose their leaves in autumn.
Hardwoods - Answer>> Oak, ash, mahogany, teak, birch,
beech.
Softwood - Answer>> A wood from coniferous trees, fast
growing and tend to be evergreen.
Softwoods - Answer>> Pine, spruce, Douglas fir, redwood,
ceder, larch.
Manufactured Board - Answer>> A man-made wood-based
composite material. Available in much larger sizes than solid
wood.
Manufactured Boards - Answer>> Plywood, marine plywood,
aeroply, flexible plywood, chipboard, MDF.
Polymers - Answer>> Thermoplastic
Thermosetting polymer
Elastomer
Thermoplastic - Answer>> A materials which can be repeatedly
reheated and reshaped, allowing it to be recycled after its initial
use. Long linear chain molecules held by van der Walls forces.