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Al

Aluminium or aluminum广东快乐十分开奖结果 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
SymbolAlDensity (20°C)/gcm3'2.6989
Atomic number13Melting point / °C660.37
No. of naturally occurring isotopes1Boiling point / °C2467
Atomic weight26.98154ΔHfus/kJmol-12.75
Electronic configuration[Ne]3s23p1ΔHvap/kJmol-110.50
Ionization energy/kJmol-1 I577.4ΔHf(monoatomic gas)/kJmol-1290.8
II1816.1Electronegativity χ321.7
III2744.1Electrical resistivity/µohm cm2.6555
Metal radius/pm143E0 (M3+(aq) +3e-→M(S))/V-1.66
Ionic radius/pm (6-coord)53.5E0 (M+(aq) +e-→M(S))/V0.55
Electronegativity %1.5

EVAPORATION TECHNIQUES
Temperature (oC) @Vap. PressureTechniquesRemarks
10-8 Torr10-6 Torr10-4 TorrElectron BeamCrucibleCoilBoat
6778211010ExcellentBN, Glassy coated graphiteWW
(thick)
Alloys and wets.
Corrosive when molten.
Thick W boat 0.015 - 0.020recommended



Al
Precision Alloys
AlloyDin SymbolElectrical Resistivity at 20°C     Conductivity  Density   
                 μΩ/Cm             S/W        g/cm3
NEXOHM®NiCr20AlSi132.00 0.76 8.00 






Thermo-electric Alloys
Model No.Symbol Melting Point                 Temp ToleranceTemp Range
°C                            °C 
KNNi, Mn, Al, Si1400±2.2°C or ±0.75% (t90)0 to 1260Tolerance Standard
JPFe, Mn, Si, Al1496±2.2°C or ±0.75% (t90)0 to 760
KNXNi, Mn, Al, Si1400±2.2°C0 to 200
JPXFe, Mn, Si, Al1496±2.2°C0 to 200
KPCAFe, Mn, Si, Al1496±100μV(±2.5°C)0 to 150Tolerance Standard






Sputtering Targets
Matierial SymbolAtomic Number     Thermal Conductivity         Theoretical Density 
W/m.Kg/cc
Aluminium_AlAl132352.7

Evaporation Materials
Matierial SymbolAtomic Number     Thermal Conductivity         Theoretical Density 
W/m.Kg/cc
Al  (pellets & pieces )Al132352.7



Below is the periodic table of chemical elements。The elements in red are the ones Nexteck's product contain。 Click them, you will come to the details。

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