Grade |
99.999% |
99.99% |
99.90% |
CHEMICAL COMPOSITION |
|||
Sc/TREM (% min.) |
99.999 |
99.99 |
99.9 |
TREM (% min.) |
99.9 |
99.9 |
99 |
Rare Earth Impurities |
ppm max. |
ppm max. |
% max. |
La/TREM |
2 |
5 |
0.01 |
Ce/TREM |
1 |
5 |
0.005 |
Pr/TREM |
1 |
5 |
0.005 |
Nd/TREM |
1 |
5 |
0.005 |
Sm/TREM |
1 |
5 |
0.005 |
Eu/TREM |
1 |
5 |
0.005 |
Gd/TREM |
1 |
10 |
0.03 |
Tb/TREM |
1 |
10 |
0.005 |
Dy/TREM |
1 |
10 |
0.05 |
Ho/TREM |
1 |
5 |
0.005 |
Er/TREM |
3 |
5 |
0.005 |
Tm/TREM |
3 |
5 |
0.005 |
Yb/TREM |
3 |
5 |
0.05 |
Lu/TREM |
3 |
10 |
0.005 |
Y/TREM |
5 |
50 |
0.03 |
Non-Rare Earth Impurities |
ppm max. |
ppm max. |
% max. |
Fe |
50 |
150 |
0.1 |
Si |
50 |
100 |
0.02 |
Ca |
50 |
100 |
0.1 |
Al |
30 |
100 |
0.02 |
Mg |
10 |
50 |
0.01 |
O |
100 |
500 |
0.3 |
C |
50 |
200 |
0.1 |
Cl |
50 |
200 |
0.1 |