Alloy

    

ARRANGEMENT ATOM IN ALOY

WHAT ARE ALLOYS?

1.Pure metal are usually too soft for most uses. They also have a low resistance tocorrosion. They rush and tarnish easily.

2.To improve the physical properties of metal, a small amount of another element(usually metal) is added to form another an alloy.

3.An alloy is a mixture of two or more metals (something non-metal) in a specific proportion. For example:a.Bronze (90% of copper and 10% of tin) b.Steel (99% of iron and 1% of carbon)

COPPER BASED ALLOY

Examples of copper base alloy are

• Cupro - Nickel 
• Bronze
• Brass

*Most copper base alloy has shiny surface

Cupro-nickel

Component: Cu 75%, Ni 25%

Coins

Bronze

Component: Cu 90%, Sn 10%

stunning chinese bronze vases

Brass

Component: Cu 70%, Zn 30%

Brass pooja item

Nails

IRON BASED ALLOY

Examples of iron base alloy are

• Steel
• Stainless steel
• Manganese steel

*The iron base alloys are usually very hard

Steel 

Component: Fe 99%, C 1%

Ship

Car

Stainless steel

Component: Fe73%, Cr 18%, Ni 8%, C 1%

Watch

Manganese steel

Component: Fe 85%, Mn 13.8%, C 1.2%

Spring