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Year 9 Engineering Enrichment    Lachlan Murphy

Materials Technology

All materials used in Engineering can be classified using the following Terminology:

Ferrous Metals Non-Ferrous Metals Metals Non-Metals

Composite Materials Thermosoftening Polymers Thermosetting Polymers

Elastomers

1. Find the meanings of these Terms. Create a Glossary of Terms where the meaning of each

word is given.

Term Definition

Ferrous Metals Metals that consist primarily of iron.

Non-Ferrous Metals Metals or alloys that are free of iron or

comparatively so.

Metals An opaque, lustrous, elemental substance

that is a good conductor of heat and

electricity. Most metals are malleable and

ductile and are, in general, denser than

other substances.

Non-Metals An element or substance that is not a metal.

Composite Materials A combination of two or more materials

(reinforcing elements,fillers and composite

matrix binder), differing in forms or

composition on a macroscale. The

constituents retain their identities,that is,

they do not dissolve or merge completely

into one another although they act in

concert. Normally, the components can be

physically identified and exhibit an interfacebetween one another.

Elastomers A natural or synthetic polymer having

elastic properties.

Thermosetting Polymers a prepolymer in a soft solid or viscous state

that changes irreversibly into an infusible,

insoluble polymer network induced by the

action of heat, suitable radiation, or both.

Thermosoftening Polymers A polymer that becomes pliable or moldableabove a specific temperature and solidifies

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upon cooling. Most thermoplastics have a

high molecular weight.

2. Use the knowledge you have gained to create a Classification Flow Chart, similar to this.

Each box should have one of the above Terms in it.

3. Complete the following table:

Term Examples Typical Application (use)

Ferrous MetalsSteel, Cast Iron, Carbon steel,

Wrought iron, Stainless steel

Cutting tools, surgical

equipment, consumer use

Non-Ferrous

Metals

Aluminium, Copper, Brass,

Silver, Lead, Titanium, Zinc

Building materials,

consumer use, pipes

Metals All of the aboveConductivity, decoration,

structures

Non-MetalsElastomers, Polymers,

Leather, Plastics

Low cost manufacturing,

aesthetics, industrial

Composite

Materials

Glass, Carbon, Silicon Carbide,

Concrete

Military uses, transportation,

electrical

ElastomersRubber, Silicon, Neoprene,

Polyurethanes

Wheels/tyres, elastomer

adhesives, electronics

Thermosetting

Polymers

Vulcanized rubber, Polyester

fibreglass

Reactive injection molding,

compression molding

Thermosoftening

Polymers

Polyethylene, Polystyrene,

Polyvinyl Chloride

Manufacturing, pipes,

lubrication, fibre glass

4. What is an Alloy? Give 6 examples, and state where they may be used.

A metal made by combining two or more metallic elements, especially to give greater strength

to resistance or corrosion.

Brass, Bronze, Silver, Duralumin, Sterling, Pewter