An ferroalloy of titanium and iron as its principal components. Also contains aluminum, silicon, carbon, sulfur, phosphorus, manganese and other impurities. Used as steelmaking deoxidizer, desulfurizer, degassing agent and alloy agent. In the process of steelmaking, it is added into steel as an alloying element to refine grain structure, fix interstitial elements (C, N) and improve steel strength.

Titanium has an atomic weight of 47.90. The outer electron structure is 3D4S. Melting point is 1667 ℃. The boiling point of 3285 ℃. 4.5 g/cm3 density (20 ℃). The chemical properties of titanium is more active, and it can form stable compounds with oxygen, nitrogen, sulfur and carbon. Titanium iron is used as deoxidizer, degasser and carbon - sulfur stabilizer in steelmaking. Titanium deoxidization in the production of killed steel can reduce segregation on the upper part of ingot, improve the quality of steel and increase the yield of ingot. Titanium and nitrogen dissolved in steel can be combined to form stable titanium nitride, which can eliminate the bad effect of nitrogen on steel properties. The formation of titanium sulfide from titanium to sulfur in molten steel eliminates the formation of iron sulfide that causes heat embrittlement.

Titanium and carbon form extremely stable titanium carbide. The particles of titanium carbide can prevent the grain growth of steel, refine the structure of steel, and improve the strength of steel.