About Alloy
Hastelloy N is an advanced nickel-based alloy renowned for its exceptional resistance to high-temperature corrosion and stress cracking in hydrogen-rich environments, specifically engineered for critical applications within the nuclear industry. Developed to withstand the rigorous conditions of nuclear reactor cores, Hastelloy N offers robust mechanical properties and reliable performance at elevated temperatures.
This alloy's superior resistance to hydrogen embrittlement and stress corrosion cracking makes it indispensable in nuclear power generation, ensuring safety and longevity in pressurized water reactors (PWRs) and boiling water reactors (BWRs). Its ability to maintain structural integrity under extreme conditions underscores its significance in safeguarding against the challenges posed by high-pressure water environments and hydrogen exposure.
Key to Hastelloy N's effectiveness is its composition, which typically includes high levels of nickel, chromium, and molybdenum, augmented by additional elements such as iron and cobalt. These components not only enhance its resistance to corrosion but also contribute to its durability and strength in demanding operational environments.
With its proven track record in nuclear applications, Hastelloy N continues to be a material of choice for critical components where reliability, safety, and performance under harsh conditions are essential considerations.
Product Form
Rod, Bar, Wire and Forgings： AMS 5786, AMS 5755
Plate, Sheet and Strip： --
Pipe and Tube： --
Welding Product： AWS A5.14 ERNiMo-3
Chemical Composition
| Alloy | C | Si | Mn | P | S | Cr | Ni | Co | Mo | W | V | Fe |
| Hastelloy W | ≤0.12 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 4.0-6.0 | Bal | ≤2.5 | 23.0-26.0 | ≤1.00 | ≤0.06 | 4.0-7.0 |
Property
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 9.00 | 1290-1375 | 965 | 520 | 51 | / |
Application
Gas Turbines: Hastelloy W is utilized in gas turbine components, including combustion chambers, exhaust systems, and other high-temperature parts due to its exceptional resistance to oxidation and high-temperature stability.
Industrial Furnaces: The alloy is employed in the construction of industrial furnaces and high-temperature processing equipment due to its ability to withstand elevated temperatures and corrosive atmospheres.
Chemical Processing: Hastelloy W finds use in chemical processing applications where exposure to aggressive chemicals and high-temperature conditions is a concern, such as in reactors, heat exchangers, and piping systems.
Aerospace Industry: The alloy is used in aerospace applications, particularly in components exposed to high-temperature and corrosive environments, where its exceptional strength and resistance to oxidation are crucial for reliable performance.
Petrochemical Industry: Hastelloy W is applied in the petrochemical industry for applications involving high-temperature and corrosive environments, including components in refining processes and chemical production.
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