针状结晶或块状，呈银灰色金属光泽 ，银灰色，有金属光泽，在空气中逐渐氧化。
沸点：3230℃
熔点：1356℃
密度：8.234

铽粉: 
含量assay                            99.9%

高纯金属铽 : 
TREM (%,Min)                         99.5 
Tb/TREM (%,Min)                      99.99 
稀土杂质Rare Earth lmpurities (%,Max) 
Eu                                   0.0001 
Gd                                   0.002 
Dy                                   0.002 
Ho                                   0.0008 
Y                                    0.0005 
非稀土杂质Non-RE lmpurities (%,Max)  
Fe                                   0.01 
Si                                   0.002 
Ca                                   0.002  
Mg                                   0.0008  
Al                                   0.008 
Ni                                   0.0008 
C                                    0.006 
O                                    0.014 
 

主要用于上等磁铁的合金冲压制造，照片磁记录和铸造有色金属合金的添加剂。
干燥保存