High-Purity Ferrovanadium Master Alloy

Ferrovanadium is a critical master alloy produced by aluminothermic reduction or electric furnace processes, containing 35-85% vanadium by weight. It serves as the primary industrial additive for introducing vanadium into molten steel and cast iron during secondary metallurgy. This alloy significantly enhances mechanical properties including tensile strength, hardness, and wear resistance while maintaining ductility. As a strategic material in advanced manufacturing supply chains, it enables production of high-strength low-alloy (HSLA) steels, tool steels, and specialty alloys for demanding applications. The product is typically supplied in crushed or lump form, with particle sizes ranging from 10 to 50 mm, and a bulk density of 3.5–4.5 g/cm³. Its density is 6.0–6.2 g/cm³, and its melting point is 1480–1520 °C. Key specifications include vanadium content of 75–85 wt%, with maximum impurity limits for silicon (≤1.5 wt%), phosphorus (≤0.05 wt%), sulfur (≤0.03 wt%), aluminum (≤1.0 wt%), carbon (≤0.5 wt%), manganese (≤0.5 wt%), nitrogen (≤0.1 wt%), and oxygen (≤0.2 wt%). These values are referenced against GB/T 4139, a Chinese standard for ferrovanadium. It is essential to verify model-specific values and standards with the legal manufacturer or supplier, as actual product specifications may vary. The alloy is used in steelmaking and foundry applications, where it is added to molten steel to achieve desired mechanical properties. Its role in grain refinement and precipitation strengthening makes it indispensable for producing high-performance steels used in construction, automotive, and energy sectors. The product is not a finished component but a raw material for further processing.

Vanadium atoms dissolve into the iron matrix during steelmaking, forming fine vanadium carbide precipitates that pin grain boundaries and impede dislocation movement, resulting in grain refinement and precipitation strengthening. This mechanism enhances the mechanical properties of steel, such as tensile strength and hardness, while maintaining ductility. The effectiveness depends on the vanadium content and the steelmaking process parameters, including temperature and cooling rate. Proper dissolution and distribution of vanadium are critical for achieving uniform properties. The alloy's particle size and density influence its dissolution rate in molten steel, with larger pieces requiring more time. The presence of impurities like aluminum and silicon can affect deoxidation and inclusion control, so their levels are controlled to ensure consistent performance.