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Aluminium ( Al )

Material Information

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Foam Foil Honeycomb Insulated Wire Lump Mesh Microfoil Microleaf Powder
Foam Foil Honeycomb Insulated Wire Lump Mesh Microfoil Microleaf Powder
Rod Single Crystal Sphere Sputtering Target Tube Wire
Rod Single Crystal Sphere Sputtering Target Tube Wire

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General Description:  

Aluminium was discovered by Hans Oersted in Copenhagen, Denmark in 1825.

Aluminium is a silvery white reactive metal which is usually covered by a tenacious oxide coating. This renders it inert to acids, but it is attacked by alkalies. It is the most common metallic element in the earth's crust (82000 ppm) and is extracted from the hydrated oxide, Bauxite, by electrolysis of the oxide dissolved in molten sodium hexafluoroaluminate (cryolite). The metal has good thermal properties and is malleable and ductile. Aluminium and its alloys are widely used for various applications including aircraft assemblies and engine parts.
   

Atomic Properties

Atomic number 13
Atomic radius - Goldschmidt ( nm ) 0.143
Atomic weight ( amu ) 26.98154
Crystal structure Face centred cubic
Electronic structure Ne 3s2 3p1
Ionisation potential No. eV
1 5.99
2 18.8
3 28.4
4 120
5 154
6 190
Natural isotope distribution Mass No. %
27 100
Photo-electric work function ( eV ) 4.2
Thermal neutron absorption cross-section ( Barns ) 0.232
Valences shown 3

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 2.67
Temperature coefficient @0-100C ( K-1 ) 0.0045
Superconductivity critical temperature ( K ) 1.175
Thermal emf against Pt (cold 0C - hot 100C) ( mV ) +0.42

Mechanical Properties

Material condition Soft Hard Polycrystalline
Bulk modulus ( GPa )     75.2
Hardness - Vickers 21 35-48
Poisson's ratio     0.345
Tensile modulus ( GPa )     70.6
Tensile strength ( MPa ) 50-90 130-195
Yield strength ( MPa ) 10-35 110-170

Physical Properties

Boiling point ( C ) 2467
Density @20C ( g cm-3 ) 2.70
Melting point ( C ) 660.4

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 23.5
Latent heat of evaporation ( J g-1 ) 10800
Latent heat of fusion ( J g-1 ) 388
Specific heat @25C ( J K-1 kg-1 ) 900
Thermal conductivity @0-100C ( W m-1 K-1 ) 237

Properties for Aluminium Honeycomb

Property Value
Cell Size mm 19 6.3 13 4.8 3.2 6.3
Compressive Strength MPa 0.7 2.1 2.9 3.5 3.7 4.6
Density g cm-3 0.029 0.054 0.062 0.07 0.072 0.083
Plate Shear Modulus - Longitudinal MPa 120 270 310 360 370 430
Plate Shear Modulus - Transverse MPa 70 170 200 225 230 270
Plate Shear Strength - Longitudinal MPa 0.6 1.5 1.8 2.2 2.3 2.9
Plate Shear Strength - Transverse MPa 0.45 1.0 1.2 1.4 1.5 1.8
Wall Thickness mm 0.064 0.038 0.102 0.038 0.025 0.064

Buy Aluminium on-line

Standard products are available in these forms
Foam Foil Honeycomb Insulated Wire Lump Mesh Microfoil Microleaf Powder
Foam Foil Honeycomb Insulated Wire Lump Mesh Microfoil Microleaf Powder
Rod Single Crystal Sphere Sputtering Target Tube Wire
Rod Single Crystal Sphere Sputtering Target Tube Wire

Choose a form to search our on-line catalogue  

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