Indium is a silver luster of the metal, soft, with his nails can scratch. Its low melting point, 156.6 ℃, and the boiling point is high, for 2075 ℃, liquid vapor pressure is very low, good plasticity and ductility, can be pressed into thin pieces of metal. The conductivity of copper indium than low about 4/5, the coefficient of thermal expansion almost twice as much as more than copper. Indium ingot is usually silvery white, its weight is usually in 2000 g + 100 g or so.
