FERRITIC STAINLESS STEEL EXCELLENT IN STRENGTH AT HIGH TEMPERATURE AND TOUGHNESS IN WELD HEAT-AFFECTED ZONE

摘要

PURPOSE:To obtain a ferritic stainless steel excellent in strength at high temp. and toughness in a weld heat-affected zone. CONSTITUTION:The ferritic stainless steel has a composition consisting of, by weight, =0.02% C, =1.0% Si, =1.0% Mn, 0.05-2.5% Mo, 14-20% Cr, =0.015% N, 0.4-1.0% Nb, 0.01-0.25% Co, and the balance Fe with inevitable impurities. Further, this steel can contain =0.5% Ti.