About Alloy
Haynes 242 alloy (UNS N10242) is a nickel-based superalloy known for its exceptional high-temperature strength, excellent resistance to oxidation, and good fabricability. It is widely utilized in demanding applications, particularly in the aerospace, gas turbine, and chemical processing industries.
The alloy’s high-temperature strength and creep resistance make it an ideal material for components in gas turbine engines, such as turbine blades, combustion chambers, and exhaust systems. Its ability to withstand extreme temperatures and harsh environments makes it a preferred choice for critical parts subjected to high stress and heat.
In addition to its impressive mechanical properties, Haynes 242 also exhibits excellent resistance to corrosion and oxidation at elevated temperatures, making it suitable for use in aggressive chemical environments and high-temperature processing applications. This corrosion resistance, combined with its high strength and durability, makes it a valuable material for components in chemical processing equipment, such as reactors, heat exchangers, and piping systems.
The alloy’s exceptional thermal stability and resistance to thermal fatigue further enhance its suitability for high-temperature applications, ensuring reliable performance and longevity in demanding operating conditions.
Haynes 242 is typically produced using vacuum induction melting (VIM) and vacuum arc remelting (VAR) processes to ensure high purity and uniformity of the material. It can be further processed through hot working, cold working, and heat treatment to achieve the desired mechanical properties and dimensional stability.
Overall, Haynes 242 is a highly versatile and reliable material that offers exceptional performance in high-temperature and corrosive environments, making it a preferred choice for critical components in aerospace, gas turbine, and chemical processing applications. Its combination of high strength, excellent oxidation resistance, and thermal stability makes it an indispensable material for industries that demand uncompromising performance under extreme conditions.
Product Form
Plate/Sheet
Round Bar/Forgings
Chemical Composition
|
Element |
Content (%) |
|
Nickel, Ni |
58 |
|
Molybdenum, Mo |
24-26 |
|
Chromium, Cr |
7-9 |
|
Cobalt, Co |
2.50 |
|
Iron, Fe |
2 |
|
Manganese, Mn |
0.80 |
|
Silicon, Si |
0.80 |
|
Copper, Cu |
0.50 |
|
Aluminum, Al |
0.50 |
|
Carbon, C |
0.030 |
|
Boron, B |
0.0060 |
Property
|
Properties |
Metric |
Imperial |
|
Tensile strength |
1290 MPa |
187000 psi |
|
Yield strength (@strain 0.200%) |
845 MPa |
123000 psi |
|
Elastic modulus |
229 GPa |
33200 ksi |
|
Elongation at break (in 4D) |
33.70% |
33.70% |
|
Reduction of area |
45.70% |
45.70% |
|
Hardness, Brinell (converted from Vickers hardness) |
257 |
257 |
|
Hardness, Knoop (converted from Vickers hardness) |
286 |
286 |
|
Hardness, Rockwell C (converted from Vickers hardness) |
19 |
19 |
|
Hardness, Vickers |
271 |
271 |
Application
Seal rings: Haynes 242 alloy is well-suited for use in seal rings due to its high strength, low thermal expansion, and good oxidation resistance .
Containment rings: The alloy's excellent strength and ductility in the aged condition make it suitable for use in containment rings .
Duct segments: Haynes 242 alloy can be used in duct segments due to its high-temperature strength and resistance to high-temperature fluoride salt mixtures.
Casings: The alloy's strength and oxidation resistance make it suitable for use in casings in gas turbine engines.
Fasteners: Haynes 242 alloy can be used for fasteners in aerospace and gas turbine applications .
Rocket nozzles: The alloy's high-temperature strength and oxidation resistance make it suitable for use in rocket nozzles.
Pumps: Haynes 242 alloy can be used in pumps due to its high strength and resistance to high-temperature fluoride salt mixtures .
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