PRODUCTION OF NON-MAGNETIC STAINLESS STEEL PC STRANDED WIRE HAVING EXCELLENT STRESS CORROSION CRACKING RESISTANCE AND HIGH STRENGTH

摘要

PURPOSE: To produce a non-magnetic stranded wire causing no stress corrosion cracking in the course of steam curing of prestressed concrete. ;CONSTITUTION: At the time of subjecting an alloy steel, having a composition consisting of, by weight, 0.03-0.25% C, ≤1.0% Si, 14-20% Mn, 0.5-7% Ni, 15-20% Cr, 2-0.5% N, and the balance Fe with inevitable impurities, to ordinary stages of refining, hot working, solution heat treatment, acid pickling, etching, lubricating film coating, cold wire drawing, stranding, and blueing heat treatment, a lubricating film is removed by means of acid pickling or grinding after cold wire drawing. Further, this non-magnetic stainless steel PC stranded wire, superior in stress corrosion cracking resistance and high in strength, has ≥170kg/mm² tensile strength and ≤1.01 magnetic permeability.;COPYRIGHT: (C)1994,JPO