Aluminium basic concepts
Aluminium ore, proparties, uses, Alloy
( Al) :-
Atomic no. :- 13
Atomic mass :- 27
Density :- 2.70g/cm
Melting point:- 660°C
Boiling point:- 2470°C
Cystal structure:- F. C. C
Major ore:- Bauxite
Ores formula
• Bauxite Al2O3. H2O
• Corundum Al2O3
• Felspar K. Al. Si3. O8
• Cryolite Na3. Al. F6
• Alanite K2SO4. Al(SO4)3.4Al(OH)3
ALUMINIUM PROPARTIES:-----
1) Very low specific weight.
2) Aluminium is a good thermal and electrial conductor.
3) Aluminium melting point 660°C
4) Aluminium boiling point 2200°C
ALUMINIUM USES :-------------
1) Power lines
2) High rise buildings
3) Window frames
4) Aircaraft components
5) Spacecaft components
6) Ships
ALUMINIUM ALLOYS :---------------
The typical alloying elements of aluminium and copper, maginesium, and zinc.
1) Duralumin:-
Al - 91-95%
Cu- 3.8-4.9%
Mg- 1.2-1.8%
Mn- 0.3-0.9%
2) Y- alloy :-
Al - 92.5%
Cu - 4%
Ni - 2%
Mg - 1.5%
3) Magnalium :-
Al - 95%
Magnesium - 5%
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