There are certain differences between 72 ferrosilicon and 75 ferrosilicon in appearance and performance.
72 ferro silicon:
The appearance is usually black block or granular.
The density is about 4.2g/cm³ (some data show 7.2~7.4g/cm³, which may be caused by differences in different batches or production methods).
75 ferro silicon (taking 75A ferro silicon as an example):
The high-quality 75A ferro silicon natural block should be dark gray with a bright and uniform metallic luster.
The surface should be smooth without cracks and oxidation.
The shape is irregular and the block is uneven, but the shape of the ferro silicon block is generally produced according to standardized standards, and the length, width and height are relatively uniform.
Silicon content:
The silicon content of 72 ferrosilicon is between 72% and 80%.
The silicon content of 75 ferrosilicon is usually between 74% and 80%, and the specific composition content of 75A ferrosilicon ranges from Si ≥ 75%.
Physical properties:
72 ferro silicon is hard at room temperature and difficult to cut.
75A ferro silicon has high density, high strength, good ductility and high toughness, can withstand various external pressures, and exhibits good impact resistance and wear resistance.
Main uses:
72 ferro silicon is mainly used as an alloying element additive and is widely used in low-alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel. At the same time, it can also be used as an inoculant for the manufacture of ductile iron and malleable cast iron, as well as a reducing agent in ferroalloy production and the chemical industry.
75 ferro silicon (especially 75A ferro silicon) is used as a deoxidizer and alloying agent in the steelmaking industry, which can effectively remove oxygen from molten steel and improve the purity and quality of steel. At the same time, it can also be used as an alloying element additive to improve the performance of steel. In addition, 75 ferro silicon is also used as a reducing agent in ferro alloy production.
Henan Tiesheng Alloy New Materials Co., Ltd. is a professional manufacturer and supplier of alloy products such as inoculants, carburizing agents, alloy cored wires, silicon carbide, silicon-carbon alloys, and slag removers. With nearly two decades of experience in the production and sales of ferroalloys, the company’s products are sold worldwide. Our partners include major steel manufacturers and others. Our products have passed the ISO quality system certification. If you have any product needs, please contact Henan Tiesheng Alloy New Materials Co., Ltd.
