Ferrosilicon 75 (FeSi75) is the most widely used core alloying additive in the steel industry. With its high silicon content (72%-80%), it has advantages such as strong deoxidation and alloying strengthening. It is used throughout the entire process of converter and electric arc furnace steelmaking, directly determining the purity, mechanical properties and processing adaptability of steel. It is a key raw material to ensure the quality of medium and high-end steel.
Its main applications include the following aspects:
Deoxidizer and alloying agent
It can be used as a deoxidizer to remove oxides in steel and prevent oxides in steel from adversely affecting the performance of steel. At the same time, the silicon element in ferrosilicon can form an alloy with the iron in steel to improve the mechanical properties and heat resistance of steel.
Increase the melting temperature
The addition of ferrosilicon 75 can increase the melting temperature of steel, which is helpful for the pouring and forming process of molten steel.
Adjust the chemical composition of steel
The addition of ferrosilicon 75 can adjust the chemical composition of steel. Especially in the production of special steel types such as stainless steel and alloy steel, it can accurately control the alloy composition and ensure the manufacturing quality of steel.
Improved wear resistance and corrosion resistance
Ferrosilicon alloys can significantly improve the wear resistance and corrosion resistance of steel, so they are widely used in steel products that require these properties.
Compatible steel grades for ferrosilicon 75
| Suitable Steel Grades | Recommended Addition | Core Function |
| Low-alloy high-strength steel (Q355, Q690) | 0.2%-0.5% | Deoxidation + Alloying Strengthening |
| Electrical silicon steel (50W470, 35W250) | 1.0%-1.5% | Increases magnetic permeability and reduces iron loss |
| Wear-resistant steel (NM450, NM500) | 1.5%-2.0% | Enhances hardness and wear resistance |
| Stainless steel (304, 316L) | 0.8%-1.2% | Deoxidation + Composition Control |
| Ordinary carbon steel (Q235, Q255) | 0.3%-0.8% | High-efficiency deoxidation and improves purity |
In general, ferrosilicon 75% is not only an alloy additive in the steel industry, but also a multi-functional functional material that can significantly improve various physical and chemical properties of steel and meet the requirements for steel quality in different fields. requirements.
