硅的分类
分类 |
型号 |
铁(%) |
铝(%) |
钙(%) |
冶金级 |
553# |
≤0.5 |
≤0.5 |
≤0.3 |
441# |
≤0.4 |
≤0.4 |
≤0.1 |
|
3303# |
≤0.3 |
≤0.3 |
≤0.03 |
|
2202# |
≤0.2 |
≤0.2 |
≤0.02 |
|
化学级 |
421# |
≤0.4 |
≤0.2 |
≤0.1 |
411# |
≤0.4 |
≤0.1 |
≤0.1 |
|
等外硅 |
铁含量大于0.5%, 硅含量在95%-98.5% |