Junction manner and the junction coupling null alloy melting galvanized steel sheet which use the steel sheet and that steel sheet for low attaching junction

摘要

PROBLEM TO BE SOLVED: To provide such a steel sheet as to form a coupling joint superior not only in shear tensile strength but also in peeling strength when jointed with an aluminum-based material by brazing.;SOLUTION: The steel sheet is any one of steel sheets selected from the group consisting of a galvannealed steel sheet, a hot-rolled steel sheet and a cold-rolled steel sheet; and comprises, by mass%, 0.05-0.25% C, 1.5% Si or less, 0.1-3.5% Mn, 0.05% P or less, 0.03% S or less, 0.1% Al or less while satisfying C+Mn/40≥0.12, and the balance Fe with unavoidable impurities.;COPYRIGHT: (C)2007,JPO&INPIT