JSS2 First Term Basic Technology Lesson Note – Uses of Materials – Metals

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WEEK:   SIX                                                                                           

TOPIC: USES OF MATERIALS – METALS

SUB-TOPICS:

1. Common Uses of Ferrous and Non-Ferrous Metals
2. Brass
3. Bronze

Sub-Topic I: Common Uses of Ferrous and Non-Ferrous Metals

Metals could be ferrous when it contains iron and non-ferrous when it does not contain iron. The things that we use that are made of metal or having metal parts in them are pots, radio, television sets, knives and forks, bicycles and motor cars. The uses of some common metals are as follows:

Ferrous Metal	Uses
Mild steel	General structural work, bolts, nuts, tubes, tin plate and non-cutting tools.
Wrought iron	Chairs, crane hooks, haulage gear and boiler plates.
Cast iron	Cylinder blocks, piston rings, vice bodies, machine tool beds, marking-out tables and surface plates.
Medium carbon steel	Nails, hammers, screws, springs and tensile wires
High carbon steel	Pliers, cutting tool, chisels, taps, hacksaw blades punches, knives

Materials made from wrought iron.

Non-ferrous metals	Uses
Copper	Wires, boxes, electrical points, bowls, water pipes
Lead	Battery element, water piping, sheeting for roofing

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