Name:…………………………………. Date:………………….

Materials Quiz

For the materials listed below, circle their correct classification

Material Classification

1) Cast Iron Metallic, Non metallic, Ceramic

2) Rubber Composite, Natural, Metallic

3) Glass Fibre Thermoplastic, Composite, Natural

4) Brass Ceramic, Composite, Metallic

5) Wood Composite, Natural, Thermoplastic

6) Nylon Thermoplastic, Natural, Composite

7) Copper Natural, Composite, Metallic

8) Polyvinylchloride ( PVC ) Natural, Composite, Thermoplastic

9) Perspex Metallic,Composite,Thermoplastic

10) Bronze Ceramic, Natural, Metallic

Name a common material that is supplied in the following forms,

Form Material

1. Sheet2. Plate3. Bar4. Wire5. Section6. Extrusions7. Castings

Name:…………………………………. Date:………………….

Mechanical Properties of Materials

Ductility – The ability of a material to be drawn or extruded.Some examples of ductile materials are low carbon steels, Copper. Brass and Wrought iron.

Brittleness – The tendency of a material to break easily or suddenly under a force or shock loading.Some examples of brittle materials are Cast Iron, some polymers and ceramics and high carbon steels.

Malleability – The ability of a material to be deformed and shaped by the application of force such as rolling or forging.Some examples of malleable materials are Gold, Copper and Lead.

Elasticity - The ability of a material to deform or change shape under a force and then return to its original shape.Some examples of elastic materials are Rubber, mild steel and some Plastics.

Plasticity – The ability of a material to stretch when a force is applied then not return to its original shape.A plastic material is Plasticine.

Hardness – The ability of a material to resist indentation, scratching or abrasion by another material.Some hard materials are Diamond and high carbon steel.

Toughness – The ability of a material to withstand shock loading without breaking.

Name:…………………………………. Date:………………….

Alloys

An alloy is a material that has metallic properties and is composed of two or more chemical elements where at least one is a metal. We make alloys to try and get the best properties from all the ingredients in the alloy.

Some common alloys are,

Brass – A mixture of Copper and Zinc, it has the same properties as Copper but is harder.

Bronze – A mixture of Copper and Tin, it has the same properties as Copper but is stronger and resists corrosion.

Pewter – A mixture of Copper, Tin and Antimony, it is harder than Copper and more corrosion resistant.

Steel – A mixture of Iron and Carbon, it is less brittle than iron and has many more uses after heat treatment.

Stainless Steel – A mixture of Steel and Chromium, it is used in applications where there is no corrosion permitted such as food manufacturing machinery.