Effect of micro alloying of steel with niobium on the mechanical properties of heat-strengthened rebar

One of the most effective micro-alloying elements in production class 500 fittings is vanadium. However, technology multi-stage and expensive, so use ferrovanadium makes vanadium-containing for mass unprofitable. In this regard, it necessary to reduce cost finished products by replacing with ferroniobium while preserving all mechanical, physical operational characteristics metal. Objective: determine effect quantitative content niobium steel hot-rolled rebar S-500WC coils at mill 370/150 OJSC “BSW – Management Company Holding “BMK” accordance requirements Israeli standard SI 4466-3:2013 various temperature speed parameters rolled products. The normalized mechanical properties s-500WC reinforcing profiles (No. 8–16) THE si are: yield strength 500–650 MPa, ductility 1.15–1.35, elongation least 11 % total break 7.5 %.