Paper 1 Unit 2 Classification of Materials
Revision Book
Classification of Materials - correct answer Metals
Woods
Polymers
Papers and Boards
Composites
Smart Materials
Modern Materials
Metals - correct answer Ferrous
Non-ferrous
Alloy
Ferrous - correct answer A metal containing mostly iron and carbon. They are magnetic and rust.
Non-ferrous - correct answer A metal that doesn't contain iron, not magnetic and do not rust.
Non-ferrous Metals - correct answer Aluminium, copper, zinc, silver, gold, titanium, tin.
Ferrous Metals - correct answer Low carbon steel, medium carbon steel, cast iron.
Alloy - correct 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 - correct answer Ferrous - stainless steel, die steel (tool steel)
Non - Ferrous - Bronze, brass, duralumin, pewter
Woods - correct answer Hardwood
Softwood
Manufactured Board
Hardwood - correct answer A wood from broad-leafed trees. Slow growing and lose their leaves in
autumn.
Hardwoods - correct answer Oak, ash, mahogany, teak, birch, beech.
Softwood - correct answer A wood from coniferous trees, fast growing and tend to be evergreen.
Softwoods - correct answer Pine, spruce, Douglas fir, redwood, ceder, larch.
Manufactured Board - correct answer A man-made wood-based composite material. Available in much
larger sizes than solid wood.
Manufactured Boards - correct answer Plywood, marine plywood, aeroply, flexible plywood, chipboard,
MDF.
Polymers - correct answer Thermoplastic
Thermosetting polymer
Elastomer
Thermoplastic - correct 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.