Phosphorus is a destructive factor in steel. That is why its amount does not exceed from 3% to 5%.  Phosphorus increases the strength and resistance to corrosion in chemical reactions. Ferro phosphorus is mainly used in structural steel. It is also used as the main component and deoxidizer in the metallurgical industry of special steels. Ferro phosphorus is also utilized to produce phosphate in the chemical industry or as an additive in the production of metallic paints