While alloy 825 was introduced to the market over fifty years ago, questions still abound about the
proper methods for fabricating, welding and heat treating the alloy. Despite the fact that alloy 825 is a
conventional iron-nickel-chromium-molybdenum alloy, it requires special attention to detail during
processing to ensure that the product develops the optimum metallurgical structure, mechanical
properties and corrosion resistance for the given application. This paper explores the various ways that
alloy 825 products are produced and fabricated to try to define optimum processing techniques for the
various applications in which the alloy is utilized.
Keywords: alloy N08825, corrosion, stabilization, sensitization, heat treatment, corrosion testing,
microstructure, precipitation, Huey Test, carbides, chromium, titanium, nickel