Different Haynes Grades:

The following are some of the most commonly used grades:

Haynes 25 :

This is a commonly used grade of Haynes material. Haynes 25 alloys are extremely tough cobalt-based alloys with exceptional temperature and oxidation resistance (Grade L605). The grade Haynes 25 combines several of the best qualities of the majority of nickel alloys, including high resistance to metal galling. Haynes 25’s excellent welding properties make it an excellent choice for complex components, and its high-temperature strength and oxidation resistance (this grade can easily withstand oxidizing situations up to 1800 degrees F) make it suitable for a wide range of industrial applications. Haynes 25 is commonly used in high-temperature machinery like gas turbine engines, ball bearings, and other components. L605, the strongest fabricable grade, has an oxidation resistance of up to 2000 °.

This grade, like many others, is hotly formable between 1900 and 2300 degrees Fahrenheit. This cobalt-based Haynes 25 grade is easily formable and has good high-temperature strength and oxidation resistance up to 2000° F. AMS 5537, AMS 5796, AMS 5759, AMS 5537, and UNS R30605 are all met by Haynes 25 or L605. Many shapes are available in large or small quantities, including tubes, pipes, wire, sheets, and plates.

188 Haynes:

Haynes 188 has excellent high-temperature strength, excellent resistance to oxidizing environments up to 2000°F (1095°C) for long periods of exposure, and excellent resistance to sulfate deposit hot corrosion. Because it is easily produced and molded using traditional methods, it has been used for cast components. Two other appealing properties are excellent resistance to molten chloride salts and adequate resistance to gaseous sulfidation.

Haynes 188 grade has good forming and welding properties. It can be forged or hot-worked in a variety of ways as long as it is held at 2150°F (1175°C) for a long enough period of time to bring the entire piece to temperature. Haynes 188 is also easily produced through cold working due to its high ductility. However, because of how quickly it work-hardens, it may be necessary to perform frequent intermediate annealing procedures for difficult component forming operations. Any hot- or cold-worked parts should be annealed and quickly chilled to regain the best balance of characteristics. Haynes 188 can be joined manually or automatically using resistance, electron beam, gas tungsten arc, and gas metal arc welding techniques. It exhibits strong constraint welding characteristics.

Haynes No. 242:

Haynes 242 (UNS N10242) is a nickel-molybdenum-chromium alloy that hardens with age and gains strength through a long-range ordering process. This grade has excellent low-cycle fatigue properties, high low-cycle strength up to 1300°F (705°C), low thermal expansion properties, good oxidation resistance up to 1500°F (815°C), and excellent thermal stability and fabricability. It’s used in high-strength fasteners, confinement, and gas turbine seal rings, among other things.

Haynes 230:

This grade has excellent high-temperature strength, thermal stability, and environmental resistance. Haynes 230 provides superior strength at high temperatures, exceptional resistance to oxidizing environments up to 2100°F (1149°C) for extended exposures, remarkable resistance to nitriding environments, and superior long-term thermal stability. It is easily shaped, castable, and produced. Other appealing characteristics include a significant resistance to grain coarsening with prolonged exposure to high temperatures, as well as lower thermal expansion characteristics than most high-temperature alloys.