what is an alloy
An alloy is a homogeneous mixture of two or more metals, or a metal mixed with a non-metal, made to improve the properties of the original metal.
Alloys are usually stronger, harder, and more resistant to corrosion than pure metals.
Common examples of alloys
| Alloy | Composition | Uses |
|---|---|---|
| Brass | Copper + Zinc | Utensils, screws |
| Bronze | Copper + Tin | Statues, medals |
| Steel | Iron + Carbon | Buildings, machines |
| Solder | Lead + Tin | Joining wires |
Why alloys are made
To increase strength
To prevent rusting or corrosion
To improve appearance
To make metals more durable
Example
Pure iron rusts easily, but steel is stronger and more useful because it is an alloy of iron and carbon.
Alloys are widely used in construction, transport, tools, electrical work, and household items.