Metallurgical grade |
||||
Grade | Si%min | Fe%max | Al%max | Ca%max |
553 | 98.5 | 0.5 | 0.5 | 0.3 |
441 | 99 | 0.4 | 0.4 | 0.1 |
3/3/05 | 99 | 0.3 | 0.3 | 0.05 |
2/2/02 | 99 | 0.2 | 0.2 | 0.02 |
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