Patent ID: 6206984
Filing Date: 2001-03-27
Classification: C21D,C22C,Y10S

Abstract:
A non-heat treated wire or bar steel comprisingNb: 0.005-0.15 wt %,Ti: 0.01-0.1 wt %,B: 0.0005-0.01 wt %,Cr: 1.02-1.8 wt %, anda remainder of Fe and unavoidable impurities, whereinthe steel has in its as-rolled state a tensile strength of 120-150 kgf/mm.sup.2 and a bending breakage rate no higher than 15% when tested according to JIS Z-2248 under a condition of r/d=2.8 where r(mm) denotes an inside radius of a bending curvature and d(mm) denotes a diameter of the steel in the as-rolled state.