Vanadium-nitrogen alloy is a new alloy additive which can be used in the production of microalloyed steel instead of iron vanadium. The addition of vanadium nitride to steel can improve the comprehensive mechanical properties such as strength, toughness, ductility and thermal fatigue resistance, and make the steel have good weldability. At the same strength, vanadium nitride can save 30 ~ 40% vanadium addition and reduce the cost.

Vanadium nitrogen alloy instead of iron vanadium for vanadium alloying, can significantly improve the strength of steel bars, without affecting the plasticity and weldability, at the same time, in the case of guaranteeing a certain strength of steel bars can reduce the amount of alloy added, reduce the cost of alloying, so many domestic iron and steel enterprises have used vanadium nitrogen alloy to produce high strength steel bars. In recent years, vanadium-nitrogen alloying technology has been applied and studied in non-tempering steel, high-strength thick-wall H beam, CSP products and tool steel. The related products developed by vanadium-nitrogen microalloying technology have good quality, stability, low alloying cost and remarkable economic benefits, which promote the upgrading of iron and steel products.