EXCEEDS THE EXPECTATIONS

 

 

GI and PVC Pipes

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A Pipe For all Application

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Pipe of this Generation

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Just Like Copper

Aluminium

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Aluminium is a soft, lightweight, malleable metal with appearance ranging from silvery to dull gray, depending on the surface roughness. Aluminium is nontoxic, nonmagnetic, and nonsparking. It is also insoluble in alcohol, though it can be soluble in water only in certain forms. The yield strength of pure aluminium is 711 MPa, while aluminium alloys have yield strengths ranging from 200 MPa to 600 MPa. Aluminium has about one-third the density and stiffness of steel. It is ductile, and easily machined, cast, and extruded.

Corrosion resistance is excellent due to a thin surface layer of aluminium oxide that forms when the metal is exposed to air, effectively preventing further oxidation. The strongest aluminium alloys are less corrosion resistant due to galvanic reactions with alloyed copper

NATURAL OCCURANCE:

In the Earth's crust, aluminium is the most abundant (8.13%) metallic element, and the third most abundant of all elements (after oxygen and silicon). However, because of its strong affinity to oxygen, it is not found in the elemental state but only in combined forms such as oxides or silicates. Aluminium is found in the lithosphere. The most common form it is found in is that of bauxite.

 

13

magnesium ← aluminium → silicon

B

Al

Ga


Periodic table - Extended periodic table
 

General

Name, symbol, number

aluminium, Al, 13

Chemical series

poor metals

Group, period, block

13, 3, p

Appearance

Standard atomic weight

26.9815386(13) gmol−1

Electron configuration

[Ne] 3s2 3p1

Electrons per shell

2, 8, 3

Physical properties

Phase

solid

Density (near r.t.

2.70 gcm−3

Liquid density at m.p.

2.375 gcm−3

Melting point

933.47 K
(660.32 C, 1220.58 F)

Boiling point

2792 K
(2519 C, 4566 F)

Heat of fusion

10.71 kJmol−1

Heat of vaporization

294.0 kJmol−1

Heat capacity

(25 C) 24.200 Jmol−1K−1

Vapor pressure

P/Pa

1

10

100

1 k

10 k

100 k

at T/K

1482

1632

1817

2054

2364

2790

Atomic properties

Crystal structure

face centered cubic
0.40494 nm

Oxidation states

3, 2 [1], 1 [2]
(amphoteric oxide)

Electronegativity

1.61 (Pauling scale)

Ionization energies
(more)

1st: 577.5 kJmol−1

2nd: 1816.7 kJmol−1

3rd: 2744.8 kJmol−1

Atomic radius

125 pm

Atomic radius (calc.)

118 pm

Covalent radius

118 pm

Miscellaneous

Magnetic ordering

paramagnetic

Electrical resistivity

(20 C) 26.50 nΩm

Thermal conductivity

(300 K) 237 Wm−1K−1

Thermal expansion

(25 C) 23.1 mm−1K−1

Speed of sound (thin rod)

(r.t.) (rolled) 5000 ms−1

Young's modulus

70 GPa

Shear modulus

26 GPa

Bulk modulus

76 GPa

Poisson ratio

0.35

Mohs hardness

2.75

Vickers hardness

167 MPa

Brinell hardness

245 MPa

CAS registry number

7429-90-5