Description

Silicomanganese CAS NO 12743-28-1 is a ferroalloy composed primarily of manganese, silicon, and iron, serving as a critical deoxidizer and alloying agent in steel production. Its primary value lies in its ability to simultaneously remove oxygen from molten steel while imparting essential properties of strength, hardness, and wear resistance to the final product. This alloy is indispensable for manufacturers in the steelmaking, foundry, and welding electrode industries, where precise control over metal composition and quality is paramount.

Application

• Steel Deoxidation and Alloying: The predominant application, used to remove dissolved oxygen from molten steel and to introduce manganese and silicon as alloying elements, improving strength and hardenability.
• Production of Carbon and Stainless Steels: A key additive in the manufacture of various steel grades, including high-strength low-alloy (HSLA) steels and certain stainless steels, to achieve desired mechanical properties.
• Foundry Operations: Used in iron and steel foundries to control the chemical composition and microstructure of castings, enhancing their quality and performance.
• Welding Electrode Manufacturing: Incorporated into the flux coating of welding electrodes to stabilize the arc, deoxidize the weld pool, and contribute alloying elements to the weld metal.
• Desulfurization Agent: Assists in removing sulfur impurities from steel, which improves ductility and toughness at high temperatures.
• Production of Other Ferroalloys: Serves as a raw material or intermediate in the production of more complex ferroalloys.

Basic Information

Product Name	Silicomanganese
CAS No.	12743-28-1
Molecular Formula	Mn-Si-Fe (Alloy, variable composition)
Molecular Weight	N/A (Alloy)
Synonyms	Ferrosilicon Manganese
Silico Manganese
SiMn
Manganese Silicon Alloy
Ferro Silicon Manganese
Manganese Ferrosilicon
Silico-Manganese Ferroalloy
EINECS	235-817-0

Quality Control

Our Silicomanganese is produced under strict process controls to ensure batch-to-batch consistency and compliance with international standards such as ISO, ASTM, and customer-specific requirements. Each lot undergoes rigorous analysis to verify key parameters including manganese, silicon, carbon, and phosphorus content. Certificates of Analysis (COA) detailing the complete chemical and physical specification are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated warehouse away from moisture and incompatible materials. Keep containers sealed when not in use to prevent oxidation and moisture absorption. The recommended ambient storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Lumpy, granular, or powder
Manganese (Mn) Content	60.0 - 70.0 %
Silicon (Si) Content	14.0 - 25.0 %
Carbon (C) Content	1.0 - 2.5 %
Phosphorus (P) Content	≤ 0.25 %
Sulfur (S) Content	≤ 0.04 %
Iron (Fe)	Balance
Size	Customizable (e.g., 10-50mm, 0-10mm)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.