Terbium  is a silvery-grey metal that is relatively stable in air. The metal is malleable, ductile, and able to be cut with a knife. It has a body-centered cubic structure, a density of 8.27 gm/cm3,a melting point of 1356 °C, and a boiling point of 2800 °C. Above1310 °C terbium becomes a hexagonal close-packed structure. Terbium oxide, or terbia, occurs as a sesquioxide with the formula Tb2O3. The oxide is a dark brown powder with a specific gravity of 7.7 gm/cm3 and a formula weight of 225.81. Terbium has one stable isotope and 36 radioactive isotopes.

Terbium is used in colour TV tubes and fluorescent lamps as a green phosphor. In combination with Europium blue and red phosphors, the three create trichromatic fluorescent lighting, which ismuch brighter than conventional fluorescent lighting. Another green application for Terbium can be found in combination with neodymium for production of the world's most heat resistant super magnets. The element is also used in alloys,crystal stabilizers in fuel cells that operate at high temperatures, specialty lasers, and to dope calcium fluoride, sodium borate and strontium molybdate materials. Terbium is a component of Terfenol-D, a material that is used in transducers, high-precision liquid fuel injectors and in a new form of audio equipment that has the potential to revolutionize the speaker industry.

Purity: Tb/TREM ≥ 99.9%

Packing: In iron drums with inner double PVC bags of 100kg net each, or packed according to customers' specifications