Standard Silicon Metal Models and Specification
Silicon Metal processed by excellent industrial silicon and including full varieties. Used in electro, metallurgy and chemical industry. It is silver gray or dark gray powder with metallic luster, which be of high melting point, good heat resistance, high resistivity and superior oxidation resistance, it's called "industrial glutamate", which is an essential basic raw material in hi-tech industry.
Silicon Metal is a very widely used chemical material in many industries:
1. As an alloying element for aluminium ingot/casting, this is the mainly usage of silicon metal, consume more than 50% of total output.
2. As alloying element for Ferrosilicon production.
3. As the basic raw material for silicons produced by the chemical industry.
4. Widely applied to refractory material and power metallurgy industry to improve the heat resistance, wear resistance and oxidation resistance.
5. As materials of organic silicon.
Here’s the most regular standards of silicon metal:
|
Model No. |
Chemical Composition % | |||
|
Si ≥ |
Impurity ≤ | |||
|
Fe |
Al |
Ca | ||
|
Si-1101 |
99.7 |
0.1 |
0.1 |
0.01 |
|
Si-2202 |
99.5 |
0.2 |
0.2 |
0.02 |
|
Si-3303 |
99.3 |
0.3 |
0.3 |
0.03 |
|
Si-411 |
99.0 |
0.4 |
0.1 |
0.1 |
|
Si-421 |
99.0 |
0.4 |
0.14-0.19 |
0.1 |
|
Si-441 |
99.0 |
0.4 |
0.4 |
0.1 |
|
Si-553 |
98.5 |
0.5 |
0.5 |
0.3 |
In those models, Silicon Metal 553 is the most accepted model used in metallurgy industry. In many areas, people intend to call it “Standard Silicon Metal”.