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.