Patent ID: 6783609
Filing Date: 2004-08-31
Classification: C21D,C22C

Abstract:
A high-carbon steel wire rod with superior drawability which has the chemical composition (in mass %) defined below:C: 0.6-1.0% Si : 0.1-1.5% Mn : 0.3-0.9% P : no more than 0.02% S : no more than 0.03% N: no more than 0.005% with the remainder being Fe and inevitable impurities, and a structure which is characterized in that pearlite accounts for no less than 95 area % and pearlite has an average nodule diameter (P &mgr;m) no larger than 30 &mgr;m and an average lamella space (S nm) more than 100 nm such that the value of F calculated by the formula below is larger than zero: F=350.3/(S)0.5+130.3/(P)0.5âˆ’51.7.