What is Haynes material?

Haynes is a brand name for a group of high-performance alloys developed by the Haynes International Inc., a leading manufacturer of high-temperature alloys. The alloys are designed to exhibit excellent high-temperature strength, oxidation resistance, and corrosion resistance, making them suitable for use in extreme environments such as jet engines, gas turbines, chemical processing plants, and nuclear reactors.

The Haynes materials are composed primarily of nickel, chromium, and cobalt, along with other elements such as tungsten, molybdenum, and iron. These alloys are known for their exceptional properties, including high temperature strength, excellent resistance to thermal fatigue, and resistance to high-temperature corrosion and oxidation.

Haynes alloys are used in a wide range of applications, including aerospace, chemical processing, power generation, and other high-temperature and high-stress environments. Some of the most well-known Haynes alloys include Haynes 25, Haynes 188, and Haynes 747.

Haynes 25 is a cobalt-based alloy. Haynes 25 is composed of cobalt, chromium, tungsten, nickel, iron, and other trace elements. It has a high melting point of around 1300°C (2370°F) and can retain its mechanical properties at temperatures up to 980°C (1800°F). This makes it suitable for use in gas turbine engines, aerospace applications, industrial furnaces, and other high-temperature environments.

Haynes 25 is also known for its excellent resistance to oxidation and sulfidation. It has good ductility and toughness, making it suitable for forming and welding processes. Haynes 25 has a unique characteristic called "galling resistance," which makes it suitable for use in applications that involve sliding or rotating contact with other metal surfaces. This feature allows it to withstand high-stress conditions without developing surface damage or wear.

Haynes188 cobalt-based alloy is a solid-solution strengthened cobalt-based superalloy that can resist various types of wear and corrosion as well as high-temperature oxidation. Cobalt-chromium-chromium-tungsten (molybdenum) alloy or stellite (Sitae alloy invented in 1907). Cobalt alloy is an iron alloy with cobalt as the main component, containing a large amount of alloying elements such as nickel, chromium, tungsten, and a small amount of molybdenum, beryllium, titanium, titanium, beryllium, and occasionally iron. Depending on what's in the alloy, they can be made into welding wire. The powder is used in hard facing welding, thermal spraying, spray welding and other processes.

Haynes188 alloy has good high temperature strength and environmental capacity. Haynes188 alloy is a cobalt-nickel-chromium-tungsten alloy with high high-temperature strength and good oxidation resistance up to 2000F (1095C), long exposure time, and excellent resistance to hot corrosion of sulfate deposits. Haynes 188 is therefore easy to manufacture and form into castings using conventional techniques. Application fields: suitable for the production of aero-engines, which require higher strength below 980C and require more anti-oxidation parts below 1100C. It can also be applied in spaceships and spaceship aircraft. Various deformed products can be manufactured, such as thin plate, medium plate, strip, bar, forging, wire, precision casting.

Haynes 747 is a Fe-Ni-Cr based precipitation hardening deformable superalloy. It is used in solid solution state. The long-term working temperature is 1100°C-1250°C, and the short-term working temperature can reach 1300°C. The alloy has high strength, good structural stability, and excellent oxidation resistance and performance. The alloy has good weldability and can be welded by various techniques. The main products are bars, plates, pipes, wires and forgings.

Alloy Haynes application forms include bar, plate, tube, wire and forgings. We, HT PIPE, can provide Haynes 25, Haynes 188 and Haynes 747 pipe fittings. Welcome to contact us for product sales details!