Architectural, automotive trim and molding, furnace combustion chambers, dishwashers, range hoods, gas burners on heating units, gutters and down spouts, steam iron bases and flatware, nitric acid plant equipment, oil refinery equipment, roofing and siding and restaurant equipment

Type 434 is one of the most widely used of the "non-hardenable" ferritic stainless steels. The addition of molybdenum increases this alloy's corrosion resistance and its attack to many deicing chemicals. It combines good heat and oxidation resistance up to 1500 °F (816 °C) as well as good mechanical properties.