 
                                Silicon metal is also called industrial or crystalline silicon.It is silver gray.Its characteristics are high melting point,good heat-resisting,high resistivity anti-oxidation. Grade Compos...
DESCRIPTION
Silicon metal is also called industrial or crystalline silicon.It is silver gray.Its characteristics are high melting point,good heat-resisting,high resistivity anti-oxidation.
| Grade | Composition | |||
| Si | Impurities(%) | |||
| Fe | AI | Ca | ||
| ≤ | ||||
| 1101 | 99.79 | 0.1 | 0.1 | 0.01 | 
| 1501 | 99.69 | 0.15 | 0.15 | 0.01 | 
| 2202 | 99.58 | 0.2 | 0.2 | 0.02 | 
| 2502 | 99.48 | 0.25 | 0.25 | 0.02 | 
| 3303 | 99.37 | 0.3 | 0.3 | 0.03 | 
| 411 | 99.4 | 0.4 | 0.1 | 0.1 | 
| 421 | 99.3 | 0.4 | 0.2 | 0.1 | 
| 441 | 99.1 | 0.4 | 0.4 | 0.1 | 
| 553 | 98.7 | 0.5 | 0.5 | 0.3 | 
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