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Scandium ( Sc )

Material Information

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General Description:  

Scandium was discovered in 1879 by L.F. Nilson and takes its name from the Latin word "Scandia", meaning "Scandinavia".

Scandium is a soft, silvery white metal. It has been identified in several minerals, including cerite, orthite, thertveitite, wolframite and euxenite (a niobate, tantalate and titanate of several rare elements in which scandium was originally discovered). It is a metal which tarnishes in air (shows a pink coloration), burns easily and reacts with water to produce hydrogen gas.

Applications for scandium have not yet been fully investigated and its use is limited primarily to research.

   

Atomic Properties

Atomic number 21
Atomic radius - Goldschmidt ( nm ) 0.160
Atomic weight ( amu ) 44.9559
Crystal structure Hexagonal close packed
Electronic structure Ar 3d1 4s2
Ionization potential No. eV
1 6.54
2 12.8
3 24.8
4 73.5
5 91.7
6 111
Natural isotope distribution Mass No. %
45 100
Photo-electric work function ( eV ) 3.5
Thermal neutron absorption cross-section ( Barns ) 25
Valences shown 3

Electrical Properties

Electrical resistivity @20C ( µOhmcm ) 66
Temperature coefficient @0-100C ( K-1 ) 0.00282

Mechanical Properties

Material condition Soft Hard Polycrystalline
Bulk modulus ( GPa )     44.2
Hardness - Brinell 78 136
Poisson's ratio     0.27
Tensile modulus ( GPa )     79.3

Physical Properties

Boiling point ( C ) 2831
Density @20C ( g cm-3 ) 2.99
Melting point ( C ) 1541

Thermal Properties

Coefficient of thermal expansion @0-100C ( x10-6 K-1 ) 12
Latent heat of evaporation ( J g-1 ) 7293
Latent heat of fusion ( J g-1 ) 357
Specific heat @25C ( J K-1 kg-1 ) 557
Thermal conductivity @0-100C ( W m-1 K-1 ) 15.8

Buy Scandium on-line

We stock and supply the following standard forms:
Foil Lump Powder
Foil Lump Powder

Choose a form to search our on-line catalog  

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