Aluminium, Al

Aluminium or aluminum is a silvery white and ductile member of the boron group of chemical elements. It has the symbol Al; its atomic number is 13. It is not soluble in water under normal circumstances. Aluminium is the most abundant metal in the Earth's crust, and the third most abundant element overall, after oxygen and silicon. It makes up about 8% by weight of the Earth’s solid surface. Aluminium is too reactive chemically to occur in nature as the free metal. Instead, it is found combined in over 270 different minerals. The chief source of aluminium is bauxite ore.

Aluminium is remarkable for its ability to resist corrosion (due to the phenomenon of passivation) and its light weight. Structural components made from aluminium and its alloys are vital to the aerospace industry and very important in other areas of transportation and building. Its reactive nature makes it useful as a catalyst or additive in chemical mixtures, including being used in ammonium nitrate explosives to enhance blast power.

Technical Data
Symbol Al Density (20°C)/gcm3' 2.6989
Atomic number 13 Melting point / °C 660.37
No. of naturally occurring isotopes 1 Boiling point / °C 2467
Atomic weight 26.98154 ΔHfus/kJmol-1 2.75
Electronic configuration [Ne]3s23p1 ΔHvap/kJmol-1 10.50
Ionization energy/kJmol-1 I 577.4 ΔHf(monoatomic gas)/kJmol-1 290.8
II 1816.1 Electronegativity χ 321.7
III 2744.1 Electrical resistivity/µohm cm 2.6555
Metal radius/pm 143 E0 (M3+(aq) +3e-→M(S))/V -1.66
Ionic radius/pm (6-coord) 53.5 E0 (M+(aq) +e-→M(S))/V 0.55
Electronegativity % 1.5    
Evaporation Techniques
Temperature (oC) @Vap. Pressure Techniques Remarks
10-8 Torr 10-6 Torr 10-4 Torr Electron Beam Crucible Coil Boat
677 821 1010 Excellent BN, Glassy coated graphite W W
(thick)
Alloys and wets.
Corrosive when molten.
Thick W boat 0.015 - 0.020 recommended

Evaporation Materials
A1-5000-M granules 2-10mm
A1-5002-M Ingot (please ask for sizes)
A1-5003-M pellets 6mm diameter x 9mm long
A1-5004-M pellets 9mm diameter x 9mm long
A1-5006-M pellets 6mm diameter x 6mm long
A1-5007-M pellets 6mm diameter x 3mm long
A1-5010-M pellets 6mm diameter x 12mm long
A1-5027-M pellets 3mm diameter x 3mm long
A1-5029-M pieces 2-4mm

The foils are available in either rectangular or circular shape. Please enter width and length or diameter of the required foil.

Foil
A1-3000-F 0.001" (0.025mm)
A1-3001-F 0.002" (0.051mm)
A1-3002-F 0.003" (0.076mm)
A1-3003-F 0.004" (0.102mm)
A1-3004-F 0.005" (0.127mm)
A1-3005-F 0.006" (0.152mm)
A1-3006-F 0.007" (0.178mm)
A1-3007-F 0.008" (0.203mm)
Powders
A1-10001-P -40 mesh
A1-10004-P -100 mesh, 325 mesh
A1-10005-P -200 mesh
A1-10007-P <5 microns
Rods
A1-2000-R 0.0625" (1.588mm)
A1-2001-R 0.125" (3.175mm)
A1-2002-R 0.250" (6.35mm)
A1-2003-R 0.500" (12.7mm)
A1-2004-R 0.625" (15.88mm)
A1-2005-R 0.750" (19.05mm)
A1-2006-R 1" (25.4mm)
Sheet
A1-4001-S 0.015" (0.381mm)
A1-4002-S 0.020" (0.508mm)
A1-4003-S 0.030" (0.762mm)
A1-4004-S 0.040" (1.0mm)
A1-4005-S 0.050" (1.27mm)
A1-4006-S 0.060" (1.524mm)
A1-4007-S 0.0625" (1.588mm)
A1-4008-S 0.125" (3.175mm)
A1-4009-S 0.250" (6.35mm)
A1-4010-S 0.375" (9.525mm)
A1-4011-S 0.500" (12.7mm)
A1-4012-S 0.750" (19.05mm)
A1-4013-S 1" (25.4mm)
Wire
A1-1000-W 0.001" (0.025mm)
A1-1001-W 0.002" (0.050mm)
A1-1003-W 0.004" (0.1mm)
A1-1007-W 0.008" (0.2mm)
A1-1011-W 0.020" (0.5mm)
A1-1013-W 0.040" (1.0mm)
A1-1017-W 0.080" (2.0mm)