金属硅主要牌号
| 名代号 | 化学成份 | ||||
| Si含量(%) | 杂质含量(%) | ||||
| Fe | Al | Ca | P | ||
| 1515级 | >99.6% | ≤0.15 | — | ≤0.015 | ≤0.004% |
| 2202级 | >99.5% | ≤0.2 | ≤0.2 | ≤0.02 | ≤0.004% |
| 2203级 | >99.5% | ≤0.2 | ≤0.2 | ≤0.03 | ≤0.004% |
| 2503级 | >99.5% | ≤0.2 | — | ≤0.03 | ≤0.004% |
| 3103级 | >99.4% | ≤0.3 | ≤0.1 | ≤0.03 | ≤0.005% |
| 3303级 | >99.3% | ≤0.3 | ≤0.3 | ≤0.03 | ≤0.005% |
| 411级 | >99.2% | ≤0.4 | 0.04—0.08 | ≤0.1 | — |
| 421级 | >99.2 % | ≤0.4 | 0.1—0.15 | ≤0.1 | — |
| 441级 | >99.0 % | ≤0.4 | ≤0.4 | ≤0.1 | — |
| 553级 | >98.5 % | ≤0.5 | ≤0.5 | ≤0.3 | — |