特殊要求:
牌号 |
化学成份 %
|
放射性不大于Bq/g |
其它杂质不大于% |
TREM |
Ce/TREM |
Pr/TREM |
Nd/TREM |
La/TREM |
Fe |
Si |
W |
Mo |
Mg |
Ti |
Al |
C |
Zn |
Mn |
Pb |
1
|
>99 |
>50-56 |
>5-7 |
>13-19 |
>23-29 |
<0.5 |
<0.03 |
<0.03 |
<0.03 |
<0.1 |
<0.01 |
- |
<0.05 |
<0.07 |
- |
- |
- |
- |
2 |
≥99 |
50-58 |
3.5-7 |
13-20 |
21-29 |
≤0.5 |
≤0.2 |
≤0.1 |
- |
≤0.1 |
- |
- |
- |
≤0.07 |
- |
- |
- |
- |
3 |
>99 |
53±3 |
3.5-7 |
16±3 |
26±3 |
<0.5 |
<0.03 |
<0.03 |
<0.03 |
<0.1 |
- |
- |
- |
<0.07 |
- |
- |
- |
- |
4 |
>98.5 |
>48-56 |
>4-7 |
>12-20 |
<20-27 |
<0.2 |
<0.2 |
- |
<0.2 |
<0.1 |
- |
<0.5 |
<0.05 |
<0.2 |
<0.5 |
<0.01 |
1 |
0.05 |
|