Main content (% min.) | Rare Earth Impurities (in TREM, % max.) | Non-Rare Earth Impurities (% max.) | ||||||||||||||||||
Ho/TREM | TREM | Eu | Gd | Tb | Dy | Er | Tm | Yb | Lu | Y | Fe | Si | Ca | Al | Mg | W | Ta | O | C | Cl |
99.9 | 99 | 0.001 | 0.002 | 0.01 | 0.05 | 0.05 | 0.01 | 0.01 | 0.01 | 0.03 | 0.15 | 0.01 | 0.05 | 0.01 | 0.01 | 0.05 | 0.01 | 0.15 | 0.01 | 0.01 |