FeSi Alloy 75 72 70 65 45 Ferrosilicon 65 Iron Silicon Factory Price. Multiple Silicon Grades: Available in 75%, 72%, 70%, 65%, 60%, and 45% silicon content. Customizable Dimensions: Lump, briquette, powder, and granular sizes available as per client requirement. Versatile Applications: Used as deoxidizer, alloy element, reductant, inoculant, and nodulizer. Quality Certifications: BV and SGS authenticated for quality control assurance. Free Samples Available: Samples provided free of charge; freight refundable upon order confirmation. Fast Delivery: 7-14 days for stock items; 25-45 days for customized production. Factory Direct Supply: Direct manufacturer and trading company with nationwide sales network. Flexible Payment Terms: 30% T/T deposit with 70% balance via T/T or L/C before shipment.