The heat-resistant casting alloys are compositions of performing satisfactorily when used a temperatures above 1200° F. Heat resistant casting alloy combinations are composed principally of nickel, chromium and iron, together with small percentages of other elements. Nickel and chromium both contribute to the superior heat-resistance of these alloys. Castings made of these alloys meet two basic requirements:
1. Good surface film stability (oxidation and corrosion-resistance) in various atmospheres and at temperature to which they are subject; and
2. The necessary mechanical strength and ductility to meet high temperature service conditions.
Heat-resistant stainless steel markets is as follows: