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Technical data for Aluminum

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Overview
NameAluminum
SymbolAl
Atomic Number13
Atomic Weight26.981538
Density2.7 g/cm3
Melting Point660.32 °C
Boiling Point2519 °C

Thermal properties
PhaseSolid
Melting Point660.32 °C
Boiling Point2519 °C
Absolute Melting Point933.47 K
Absolute Boiling Point2792 K
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion10.7 kJ/mol
Heat of Vaporization293 kJ/mol
Heat of CombustionN/A
Specific Heat904 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
Thermal Conductivity235 W/(m K)
Thermal Expansion0.0000231 K-1

Bulk physical properties
Density2.7 g/cm3
Density (Liquid)2.375 g/cm3
Molar Volume9.99×10-6
Brinell Hardness245 MPa
Mohs Hardness2.75 MPa
Vickers Hardness167 MPa
Bulk Modulus76 GPa
Shear Modulus26 GPa
Young Modulus70 GPa
Poisson Ratio0.35
Refractive IndexN/A
Speed of Sound5.1×103 m/s
Thermal Conductivity235 W/(m K)
Thermal Expansion0.0000231 K-1

Reactivity
Valence3
Electronegativity1.61
ElectronAffinity42.5 kJ/mol
Ionization Energies
577.5, 1816.7, 2744.8, 11577, 14842, 18379, 23326, 27465, 31853, 38473 kJ/mol

Health and Safety
Autoignition Point400 °C
Flashpoint645 °C
Heat of CombustionN/A
DOT Hazard Class4.3
DOT Numbers1396
EU NumberN/A
NFPA Fire Rating1
NFPA HazardsN/A
NFPA Health Rating0
NFPA Reactivity Rating1
RTECS NumberRTECSBD0330000
NFPA LabelNFPA Label

Classifications
Alternate NamesAluminium
Names of AllotropesNone
Blockp
Group13
Period3
Electron Configuration[Ne]3s23p1
ColorSilver
Discovery
1825 in Denmark
Gas phaseN/A
CAS NumberCAS7429-90-5
CID NumberCID5359268
Gmelin NumberN/A
NSC NumberN/A
RTECS NumberRTECSBD0330000

Electrical properties
Electrical TypeConductor
Electrical Conductivity3.8×107 S/m
Resistivity2.6×10-8 m Ω
Superconducting Point1.175

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility7.8×10-9
Molar Magnetic Susceptibility2.1×10-10
Volume Magnetic Susceptibility0.0000211

Abundances
% in Universe0.005%
% in Sun0.006%
% in Meteorites0.91%
% in Earth's Crust8.1%
% in Oceans5×10-7%
% in Humans0.00009%

Atomic dimensions and structure
Atomic Radius118 pm
Covalent Radius118 pm
Van der Waals RadiusN/A
Crystal StructureFace Centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
404.95, 404.95, 404.95 pm
Space Group NameFm_ 3m
Space Group Number225

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers2P1/2
Neutron Cross Section0.233
Neutron Mass Absorption0.03
Known Isotopes
21Al, 22Al, 23Al, 24Al, 25Al, 26Al, 27Al, 28Al, 29Al, 30Al, 31Al, 32Al, 33Al, 34Al, 35Al, 36Al, 37Al, 38Al, 39Al, 40Al, 41Al, 42Al
Stable Isotopes
27Al
Isotopic Abundances
27Al100%


Notes on the properties of Aluminum:

Specific Heat: Value given for solid phase.

Up to date, curated data provided by
Mathematica's ElementData function from Wolfram Research, Inc.

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