iii. metals

What are ferrous metals?

Contains steel

What are non-ferrous metals?

Does not contain iron

Is ferrous metals vulnerable to rust?

Yes ( except for stainless steel and wrought iron)

Is non-ferrous metals vulnerable to rust

No - higher resistance

What’s more malleable, fervour or non-ferrous metals?

Non-ferrous

Are ferrous metals magnetic?

Yes

What are alloys?

A mixture 2 or more metals to improve properties/ characteristics

Properties of mild steel

• Tough

• Malleable

• Ductile

• High tensile strength

Composition of mild steel

Carbon+iron

What is the melting point of mild steel?

1350-1530°C

Properties of stainless steel

• Difficult to cut

• Hard/tough

• Sometimes magnetic

• Resistant to wear

Composition of stainless steel

Chromium+carbon

What is the melting point of stainless steel?

1400-1530°C

Properties of cast iron

• brittle

• Hard skin-soft core

• Good compression

• Self-lubricantly

Properties of copper

• Excellent electrical+thermal conductivity

• Ductility

• Malleability

Composition of copper

Copper-63+copper-65

What is the melting point of copper?

1085°C

Where might copper be used?

• Electrical cable

• Water+thermal heating

Properties of aluminium

• Low density

• High strength to weight ratio

• Highly conductive

• Highly reflective

Composition of aluminium

Aluminium?

What is the melting point of aluminium?

660°C

Where might aluminium be used?

• Packaging

• Containers for food products

• Computers