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Silicon metal, also known as crystalline silicon or industrial silicon, is mainly used as an additive for color based alloys. Metallic silicon is a product made of quartz and coke in an electric furnace. The content of silicon in the main components is about 98% (including 99.99% of silicon is also contained in metallic silicon), and other impurities include iron, aluminum, calcium, etc.
Common grades include 553 / 441 / 3303 / 2202 / 411 / 421, etc.
| 硅金属 | ||||
| 等级/规格 | Si | Fe | Al | Ca |
| ≥ | ≤ | |||
| 553 | 95.8% | 0.5% | 0.5% | 0.3% |
| 441 | 99% | 0.4% | 0.4% | 0.1% |
| 421 | 99.2% | 0.4% | 0.2% | 0.1% |
| 411 | 99.3% | 0.4% | 0.1% | 0.1% |
| 3303 | 99.3% | 0.3% | 0.3% | 0.03% |
| 2202 | 99.5% | 0.2% | 0.2% | 0.02% |
| 1101 | 99.7% | 0.1% | 0.1% | 0.01% |
| 2502 | 99.4% | 0.25% | 0.25% | 0.02% |
