The U.S. Naval Research Laboratory created Haynes alloys and named them after Elbert Haynes to honor him. While there was a persistent demand for high-temperature alloys during the United States' mass production in WWII, alloys that could withstand high temperatures proved to be extremely uncommon. It is during these circumstances that Haynes alloys were born.
Haynes alloys have undergone and continue to change with the progress in technology and its application in various industries. Currently, Haynes alloys comprise high-end materials that have an extensive array of uses.
Product Types
Numerous varieties of Haynes alloys exist. Here are some of the more common examples:
Haynes 230 appears to be the most popular type of nickel superalloy. This nickel superalloy also accounts for 20% chromium, 14% molybdenum, 5% tungsten, and 0.15% carbon. This particular superalloy is used mostly in products for the aviation, aerospace, and energy sectors because of its high-order welded structures and oxidation-resistant capabilities, along with high-temperature strength.
Haynes 188 has also become renowned for its high-temperature strength. Haynes 188 is also a nickel-based superalloy and consists of 22% chromium, 14% titanium, 3% aluminum, and 1.5% molybdenum. This nickel superalloy has also proven to surpass Haynes 230 in oxidation resistance and is used in the turbines and other high-grade pieces of equipment.
Haynes 25 is also a nickel-based superalloy and accounts for 20% chromium, 10% molybdenum, 5% tungsten, and 3% titanium. This Haynes alloy, along with the superalloy nickel, has proven to exceed and maintain high strength, high-temperature strength, corrosion resistance, and machinability. This alloy is also used for other materials in need of high-temperature components and machinery.
Other varieties of Haynes alloy include Haynes 214, Haynes 242, Haynes 263, and Haynes 282.
Applications
Haynes alloys are frequently employed in a wide range of industries, many of which exploit their unparalleled characteristics. Below are a few of their uses per sector.
Aerospace: Alloys are prominent in aerospace as turbine blades, engine nozzles, and gas turbines, which are some of the high-temperature aerospace components.
Petrochemical: The petrochemical industry again utilizes Haynes alloys in chemical reactors, refining equipment, and in high-temperature pipes that endure extreme heat and pressure, as well as deliver corrosion resistance.
Nuclear: Alloys are used in the nuclear industry for the stable and safe functioning of nuclear reactors and for the manufacture of fuel elements, heat exchangers, and piping.
Medical: Haynes alloys are used in medical implants such as casts and artificial joints due to their high biocompatibility.