This document discusses the properties, forms, uses, and advantages of aluminum. It notes that aluminum is a lightweight, non-ferrous metal commonly used today. It exists naturally in the earth as bauxite ore and can be extracted. Aluminum has high strength to weight ratio, good conductivity, and is corrosion resistant. It is used in various forms like casting, extrusion, sheets, foil and powder. Common applications include doors, windows, siding, kitchenware, cables, and vehicles where its properties allow replacement of heavier metals. Aluminum provides advantages like low weight, corrosion resistance, and ability to form useful alloys.

1. ALUMINIUM
• Properties
• Forms
• Uses
• Advantages
Prof. Suyash Awasthi
Deptt of Civil Engg
GGITS

2. Introduction
• It is a non ferrous material commonly used
• It is present in abundance in earth surface
• Exists in clay in not commercial ore “bauxite”
• Bauxite is Hydrated Aluminium Oxide
• Is present as Mono and Tri hydrates form
• Chief impurities are oxide, silica, clay & titanium
oxide
• Found in Bihar, Tamil Nadu, Madhya Pradesh

3. Properties of Aluminium
• Pure aluminium has silvery color and lusture
• Commercial grades show a bluish tinge
• High purity = Greater resistance to corrosion
• It is ductile and malleable
• Specific gravity is 2.7
• It is strong in proportion to its weight
• Melting point = 658 C; Boiling point = 2057 C
• Its electrical resistivity is 2.669 micro ohms/ cm3
@ 20 C
• Its tensile strength is from 95 – 157 N/m2

4. • It is a good conductor of heat and electricity
• It forms useful alloys with Fe, Cu, Zn & others
• Its is unaffected by ordinary atmospheric
influences but is corroded in sea water
• It is electron positive to most metals.
Properties of Aluminium cont…

5. Forms of Aluminium
Forms of
Aluminium
Casting Based
Extrusion
Based
Sheet Based
Foil &
Powdered
Based
• Doors &
windows
frames
• Green house &
roof top
gardens
• Space dividers/
partition
• Geodesic
domes
• Panels &
curtain walls
• Cable tray
• Flat type false
ceiling
• Prefabricated
House
• Ridging &
angels of roof
• Rain water
• Baluster
head
• Hardware &
fittings
• Security &
decorative
grills
• Decorative
laminates
• Insulative foils
• Paints
• Water
proofing
sheets

6. Casting Based
• Baluster head
• Hardware &
fittings
• Security &
decorative
grills

7. Extrusion Based
• Doors &
windows
frames
• Green house
& roof top
gardens
• Space
dividers/
partition
• Geodesic
domes
• Panels &
curtain walls

8. Sheet Based
• Cable tray
• Flat type false
ceiling
• Prefabricated
House
• Ridging &
angels of roof
• Rain water

9. Foil & Powdered Based
• Decorative
laminates
• Insulative
foils
• Paints
• Water
proofing
sheets

10. Uses of Aluminium
• Because it is soft little pure aluminium is used in cast
form
• After being rolled into sheets it may be stamped into
variety of shapes
• It is often used as an alloy along other metals to make
furniture, rail-road and trolley cars, automobile
bodies and pistons, electric cables & bus bars, kitchen
utensils and collapsible tubes of pastes
• In finely divided form it is used as pigments in paints
~ priming coat for wood/ protective coat for metals
• Is used in deoxidizing molten iron and steel
• Used as foils for wrapping chocolates/ food etc.

11. Advantages of Aluminium
• Can be written by taking points from above Topics
viz. – Forms & Uses
Thank You …