WIRE ROD FOR DRAWING WITH EXCELLENT DRAWABILITY, ULTRA HIGH STRENGTH STEEL WIRE AND MANUFACTURING METHOD OF THE SAME

摘要

PURPOSE: Wire with excellent drawing performance and ultra high strength steel wire are intended to provide tensile strength of over 2000MPa and an excellent twisting property. CONSTITUTION: Wire with excellent drawing performance consists of C of 0.8~1.0weight%, Mn of 0.3~0.7weight%, Cr of 0.2~0.6weight%, Fe and inevitable impurities. The wire comprises fine pearlite formed from guostenite of over 100μm in grain size. The lamellar spacing of the pearlite is below 100nm and the deviation of the lamellar spacing is below 50nm.