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Ferro Silicon
Ferro Silicon
Ferro silicon alloy is mainly used as charging materials in smelting industries such as ferrous and non-ferrous metals. As a deoxidizer in crude steel smelting in the iron and steel industry, ferro silicon is an essential metallurgical raw material. It emits a lot of heat when SiO2 is generated, it is beneficial to increase the temperature of molten steel while deoxidizing. As an alloying element additive, ferro silicon is widely used in low-alloy structural steel, alloy steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel.
High-silicon ferro silicon or siliceous alloy are used as reducing agents in the production of low-carbon iron alloy in the ferro alloy industry. Ferro silicon added to cast iron can be used as an inoculant for nodular cast iron, and can prevent the formation of carbide, promote the precipitation and nodulizing of the graphite, and improve the properties of cast iron. A large amount of ferro silicon is also needed as an additive in the smelting process of metallic magnesium.
In steelmaking industry, it consumes about 3-5kg 75% ferro silicon as producing one ton steel. Normal steel contains 0.15%-0.35% silicon, structural steel contains 0.40%-1.75% silicon, tool steel contains 0.30%-1.80% silicon, spring steel contains 0.40%-2.80% silicon, and stainless acid-resistant steel contains 3.40%-4.00% silicon, heat-resistant steel contains 1.00%-3.00%silicon, silicon steel contains 2%-3% or higher silicon.
Ferro Silicon Specification:
Ferro Silicon
Chemical Composition / %
Si
Al≤
Ca≤
Mn≤
Cr≤
P≤
S≤
C≤
Ti≤
FeSi90Al1.5
87.0-95.0
1.5
1.5
0.4
0.2
0.04
0.02
0.2
—
FeSi90Al3.0
87.0-95.0
3.0
1.5
0.4
0.2
0.04
0.02
0.2
—
FeSi75Al0.5-A
74.0-80.0
0.5
1.5
0.4
0.5
0.035
0.02
0.1
—
FeSi75Al0.5-B
72.0-80.0
0.5
1.5
0.5
0.5
0.04
0.02
0.2
—
FeSi75AL1.0-A
74.0-80.0
1.0
1.0
0.4
0.3
0.035
0.02
0.1
—
FeSi75Al1.0-B
72.0-80.0
1.0
1.0
0.5
0.5
0.04
0.02
0.2
—
FeSi75Al1.5-A
74.0-80.0
1.5
1.0
0.4
0.3
0.035
0.02
0.1
—
FeSi75Al1.5-B
72.0-80.0
1.5
1.0
0.5
0.5
0.04
0.02
0.2
—
FeSi75Al2.0-A
74.0-80.0
2.0
1.0
0.4
0.3
0.035
0.02
0.1
—
FeSi75Al2.0-B
72.0-80.0
2.0
—
0.5
0.5
0.04
0.02
0.2
—
FeSi75-A
74.0-80.0
—
—
0.4
0.3
0.035
0.02
0.1
—
FeSi75-B
72.0-80.0
—
—
0.5
0.5
0.04
0.02
0.2
—
FeSi65
65.0-70.0
—
—
0.6
0.5
0.04
0.02
—
—
FeSi45
40.0-47.0
—
—
0.7
0.5
0.04
0.02
—
—
TiFeSi75-A
74.0-80.0
0.03
0.03
0.1
0.1
0.02
0.004
0.02
0.015
The composition ratio and particle size can be adjusted according to client’s requirements.
Appearance: The shape of ferro silicon powder particles can be spherical or irregular, like lumps, crushed or milled.
Color: The color of ferro silicon varies between silvery grey and dark grey.
Odor: Odorless; can be dangerous when inhaled.
Molecular Weight: The molecular weight for this alloy is 28.0855 g/mol.
Melting Point: The melting point of this substance varies with the content of silicon. FeSi 45 contains 45% silicon and its melting point ranges between 1215°C and 1300°C. FeSi 75 contains 75% silicon and its melting point ranges between 1210°C and 1315°C. FeSi 90 contains 90% silicon and its melting point ranges between 1210°C and 1380°C.
Boiling Point: The boiling point for this substance is 2355°C.
Density: The density of ferro silicon is different for different ratios of alloy compositions. FeSi 45 has a density of 5.1 g/cm3. The density of FeSi 75 is 2.8 g/cm3 and FeSi 90 has a density of 2.4 g/cm3.
Corrosivity: It is resistant to corrosiveness and abrasiveness.
Solubility: Ferro silicon may react with water to produce hydrogen.
Combustibility: The dust particles of ferro silicon are combustible.
Specific Gravity: Specific Gravity of ferro silicon varies with the proportions in which the two chemical substances are mixed. For FeSi 75, the specific gravity is 3.01.
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