Al-PLATED STEEL SHEET FOR EXHAUST GAS PASSAGEWAY MEMBER OF MOTORCYCLE EXCELLENT IN HIGH-TEMPERATURE STRENGTH AND THE GAS PASSAGE WAY MEMBER USING THE STEEL SHEET

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive Al-plated steel sheet having excellent red scale resistance, peeling resistance of a plating-coated layer, formability and low temperature toughness and high strength at high temperature.;SOLUTION: An Al-plated steel sheet for exhaust gas passageway members of motorcycles which is produced by dipping a substrate steel sheet which contains by mass C: 0.02% or below, Si: 2% or below, Mn: 2% or below, Cr: 5 to 25%, Nb: more than 0.1% to 1%, Ti: 0.3% or below, N: 0.02% or below, and, if necessary, one or more of Ni: 0.6% or below, Al: 0.2% or below, Mo: 3% or below, Cu: 3% or below, W: 3% or below, V: 0.5% or below, Co: 0.5% or below and B: 0.01% or below with the balance consisting of Fe and unavoidable impurities in a molten Al-based plating bath to form a hot-dip plating layer having a mean thickness of 3 to 20 μm on the surface of the sheet and which is excellent in high-temperature strength and red scale resistance.;COPYRIGHT: (C)2009,JPO&INPIT