Tb metal chemical composition(%) | ||||||||||||||
Product specification | RE(Min) | Pr/RE(Min) | Rare earth impurities Max | Non rare earth impurities Max | ||||||||||
(Y+Eu+Gd+Dy+He) / RE | Fe | Si | Al | Ca | Mg | C | Ta | W | Ni | Cu | O | |||
3N-Tb | 99 | 99.9 | 0.1 | 0.05 | 0.02 | 0.02 | 0.05 | 0.01 | 0.02 | 0.01 | 0.1 | 0.03 | 0.01 | 0.15 |
4N-Tb | 99.5 | 99.9 | 0.01 | 0.01 | 0.005 | 0.005 | 0.01 | 0.005 | 0.01 | 0.005 | 0.01 | 0.01 | 0.005 | 0.05 |