HASTELLOY is the registered trademark name of Haynes International, Inc. The trademark is applied as the prefix name of a range of roughly fifteen different highly corrosion resistant metal alloys loosely grouped by the metallurgical industry under the material term “super alloys” or "high performance alloys". The predominant alloying ingredient is typically the transition metal nickel (Atomic Number 28 on the periodic table of the elements). Other alloying ingredients are added to the nickel in each of the sub categories of this trade mark designation and include varying percentages of the elements molybdenum, chromium, cobalt, iron, copper, manganese, titanium, zirconium, aluminum, carbon, and tungsten. The primary function of the HASTELLOY® super alloys is that of effective survival under high temperature, high stress service in a moderately to severely corrosive, and or erosion prone environment where the more common and less expensive iron based alloys would fail.
