FERROUS METAL Contain large % of iron (Fe)

Subject to attack rust

Wrought iron and cast iron are less affected

Example :

IRON

CAST IRON

WROUGHT

IRONSTEEL

IRON With Carbon :

- Increase metal strength and hardness

- Reduce ductility

Without Carbon :

- Soft

- Malleable

- Silver-white look

- Will rust and corrode when expose to acids

CAST IRON

Hard

Corrosion-resistant

Strong and cheap

Malleable when carbon remove

Application : stove, stairs, pipe,

decorative pieces

WROUGHT IRON

Tough and ductile Relatively soft Purest form of iron, contain about 0.02%

carbon Corrosion of resistance Applicable : - Gates - Railings - Fences

NON-FERROUS METAL

Metals not made of iron but made of other metallic

elements

More expensive than iron or steel

No contain iron, therefore no rust

Example :

NON-FERROUS METALS

Aluminum Brass Bronze Copper Lead Magnesi

um Tin Zinc

ALUMINUM

Silver-white metallic Soft & flexible Ductile Good conductivity of heat and electricity High resistance to corrosion Applications :

- Section for window and door frames

- Door and window furniture

COPPER Malleable and ductile Corrosion-resistant High thermal and electricity conductivity Application : - Pipes - Roofing - Gutters

LEAD

Soft but heavy Poor electrical conductor Corrosion-resistant Application : -

BRASS An alloy mixture of copper & zinc Strength and hardness depends on zinc

content Yellow in color Improve strength and corrosion-resistant Application : - Soft brass for door & window - Furniture - Hard brass for plumbing connections

BRONZE Pinkish Mixture of copper & tin Greater % of tin, more stronger Applications : -