
| Analysis results(%) | |||||
| Rare earth impurities | Non-rare earth impurity | ||||
| RE | >99 | Y/RE | >99.9 | Fe | 0.048 |
| La | 0.0014 | Ce | <0.0019 | Al | 0.050 |
| Pr | 0.0019 | Nd | 0.0081 | C | 0.028 |
| Sm | <0.0015 | Eu | <0.0010 | O | 0.35 |
| Gd | <0.0011 | Tb | 0.019 | Si | 0.034 |
| Dy | 0.015 | Ho | 0.0016 | Ca | 0.026 |
| Er | 0.0029 | Tm | <0.0010 | Ni | 0.050 |
| Yb | <0.0010 | Lu | <0.0010 | Mg | <0.010 |
| Ta+Ti | <0.020 | ||||