Samarium is a chemical element with the symbol Sm and atomic number 62. It is a moderately hard silvery metal that slowly oxidizes in air.
Phase at STP： solid
Melting point： 1345 K (1072 °C, 1962 °F)
Boiling point： 2173 K (1900 °C, 3452 °F)
Density (near r.t.)： 7.52 g/cm3
when liquid (at m.p.)： 7.16 g/cm3
Heat of fusion： 8.62 kJ/mol
Heat of vaporization： 192 kJ/mol
Molar heat capacity： 29.54 J/(mol·K)
The major commercial application of samarium is in samarium–cobalt magnets, which have permanent magnetization second only to neodymium magnets.
Other applications of samarium include catalysis of chemical reactions, radioactive dating and X-ray lasers.