Product Name: Ferromanganese Silicon / Silicomanganese Alloy (SiMn)

CAS No.: 12069-96-6

HS Code: 72023000

Appearance: Silver-gray Metallic Lumps

Standard Size: 10-50mm, Customizable 5-10mm / 50-80mm

Grade: Standard Export Metallurgical Grade

Technical Specifications

• Manganese (Mn) Content: 65% – 70%

• Silicon (Si) Content: 15% – 20%

• Carbon (C): ≤1.8%

• Phosphorus (P): ≤0.07%

• Sulfur (S): ≤0.05%

• Product Feature: No obvious impurities, no powder caking

  Silicomanganese Alloy (Ferromanganese Silicon, CAS 12069-96-6) is one of the most widely used composite ferroalloys in the global metallurgical industry, specially designed for steelmaking purification and alloy performance upgrading. Adopting professional high-temperature smelting and precise proportioning technology, our export-grade silicomanganese maintains stable manganese content of 65%–70% and silicon content of 15%–20%, with strictly controlled harmful impurities including carbon, phosphorus and sulfur, fully complying with international metallurgical quality standards. The finished product presents uniform silver-gray metallic lumps with clean surface, no sundries and no agglomeration, supporting flexible size customization from 5mm to 80mm to match different smelting equipment and processing requirements.

  This SiMn alloy has irreplaceable core functions in steelmaking and casting processes. Firstly, it acts as an efficient composite deoxidizer and desulfurizer, rapidly removing excess oxygen and sulfur elements from molten steel, eliminating internal defects of steel materials and improving finished steel purity. Secondly, it serves as a critical alloying agent that perfectly integrates manganese and silicon elements into steel substrates, effectively improving the mechanical properties of carbon steel, alloy steel and cast iron, including structural toughness, surface hardness and wear resistance. In addition, silicomanganese can replace multiple single ferroalloys in one dosage, simplifying production procedures and greatly reducing raw material and energy consumption for steel mills.

  Our factory implements full-process quality inspection and batch testing for every silicomanganese shipment, ensuring stable component proportion, zero batch difference and reliable smelting effect. With flexible size specifications and complete quality certification reports, the product fully adapts to large-scale continuous production of international steel plants and casting enterprises. Supported by sufficient inventory and mature global supply chain, we provide long-term stable bulk supply and competitive pricing services, delivering high-cost-performance metallurgical solutions for global metal smelting and manufacturing customers.