High-strength low carbon steel wire rod and method for the production of this wire.

摘要

ABSTRACT OF THE DISCLOSUREHigh strength low carbon steel wire rods excellent inthe cold drawing property have a composite structure inwhich an acicular low temperature transformation phasecomprising a martensite, bainite and/or the mixed structurethereof that comprises, by weight %,C : 0.02 - 0.30 %,Si : less than 2.5 %,Mn : less than 2.5 % andthe balance of iron and inevitable impurities and that maypartially contain retained austenite is uniformly dispersedat the volume ratio of from 10 to 70 % in the ferritephase, and in which the weight of (C+N) in solutionin the ferrite phase is less than 40 ppm.