NICKEL-CHROMIUM ALLOY

摘要

The invention relates to a nickel-chromium alloy, comprising 0.4 to 0.6% carbon, 28 to 33% chromium, 15 to 25% iron, 2 to 6% aluminum, up to 2% silicon, up to 2% manganese, up to 1.5% niobium, up to 1.5% tantalum, up to 1.0% tungsten, up to 1.0% titanium, up to 1.0% zirconium, up to 0.5% yttrium, up to 0.5% cerium, up to 0.5% molybdenum, up to 0.1% nitrogen and the remainder nickel, having high oxidation and carburization resistance, long-time rupture strength and creep resistance. Said alloy is particularly suited as a material for components of petrochemical plants and parts, such as for pipe coils in cracking and reforming furnaces, preheaters and reformer tubes and for use for parts of iron ore direct reduction systems.