High-performance vehicles and motor sports engines use INCONEL 625, which is particularly suited to exhaust couplings and INCONEL X750 is used to make engine valve springs.
INCOLOY alloys and INCONEL alloys, particularly INCOLOY 800, INCONEL 600 and INCONEL 601 are effective additions to the electrical resistance series. These alloys are also oxidation and corrosion resistant materials, and are well-suited for service in extreme environments where they are subjected to pressure and heat. These electrical resistance materials have excellent mechanical strength and resistance at high temperatures and have a good surface stability. When heated, the Incoloy and Inconel alloys form a thick, stable, passivating oxide layer protecting the surface from further attack, making them ideal for seam-welded tubing for element sheathing INCOLOY 800, INCONEL 600 and INCONEL 601 are used in with furnace furniture constructed in the same material for maximum resistance to the environment.
INCONEL 625 is an excellent choice for sea-water applications, as it is resistant to pitting and crevice corrosion and has high corrosion-fatigue strength, high tensile strength, and is resistant to chloride-ion stress-corrosion cracking. Used in wire rope, propeller blades, propulsion motors and sheathing for undersea communication cables, this versatile alloy has earned its place in the marine industry. Down-hole equipment, like hangers, uses another super alloy, INCOLOY 718 for its high strength and corrosion resistance. Monel 400 is a nickel-copper alloy that is stronger than pure nickel and can be fabricated readily by hot- and cold-working, machining, and welding. Monel alloys are resistant to corrosion by many agents, including rapidly flowing seawater.
This feature, coupled with its resistance to bio-fouling and microbially induced corrosion(MIC), makes Monel a cost-effective and robust alloy for the manufacture of wave protection sheathing for platform risers and steel pylon legs on offshore rigs.
INCONEL 600 has the desirable combination of high strength and good workability. Resistant to corrosion by many organic and inorganic compounds, it is virtually immune to chloride-ion stress-corrosion cracking. INCONEL 617 offers a combination of metallurgical stability, strength, and oxidation resistance at high temperatures, as well as being resistant to a wide range of corrosive aqueous environments. INCOLOY 825 is used in shaped screening wires used to size mineral particles. Resistant to reducing and oxidizing acids, INCOLOY 825 also resists stress-corrosion cracking and localised attack, such as pitting and crevice corrosion.
Thermal Processing Industries
INCONEL 601 and INCOLOY 800 alloys have a wide range of applications in thermal processing. They show extreme strength and stability in high temperatures, and resistance to corrosion caused by intense furnace atmospheres. Applications include furnace components such as belts, hearths, muffles, radiant tubes and retorts plus the jigs and carriers used in heat treatment processes. INCOLOY alloy develops a tightly adherent oxide film that protects its surface against corrosion processes. INCOLOY alloy may be heated indefinitely within the 600-900°C range without fear of ‘sigma’ phase embrittlement, and it is for this reason that it is used in a wide variety of high temperature process equipment.