Hastelloy X (UNS N06002)

Hastelloy X Product Introduction

Overview:
Hastelloy X (UNS N06002) is a nickel-based superalloy known for its exceptional resistance to oxidation, outstanding high-temperature strength, and excellent weldability. It is specifically engineered for use in extreme environments where components are exposed to high mechanical stress and thermal cycling, such as in aerospace, chemical processing, and industrial heating applications.

Key Features:

High-Temperature Strength:

• Maintains excellent mechanical properties at temperatures up to 1200°C (2190°F).
• Resistant to creep and stress rupture under extreme thermal conditions.

Oxidation Resistance:

• Exceptional resistance to oxidation in static and dynamic air up to 1200°C (2190°F).
• Withstands cyclic heating and cooling without significant degradation.

Corrosion Resistance:

• Resistant to carburization, nitridation, and oxidizing conditions.
• Performs well in high-temperature chemical environments.

Fabrication and Weldability:

• Easy to form into complex shapes and weld without cracking or other defects.
• No need for post-weld heat treatment, simplifying fabrication processes.

Chemical Composition (Typical):

• Nickel (Ni): 47.5–61%
• Chromium (Cr): 20.5–23%
• Iron (Fe): 17–20%
• Molybdenum (Mo): 8–10%
• Cobalt (Co): 0.5–2.5%
• Tungsten (W): 0.2–1%
• Manganese (Mn): ≤1%
• Silicon (Si): ≤1%
• Carbon (C): ≤0.10%
• Sulfur (S): ≤0.03%

Applications:

Aerospace Industry:

• Combustion chambers, turbine blades, afterburners, and transition ducts for jet engines and gas turbines.

Power Generation:

• Components for gas turbines used in power plants.

Chemical Processing:

• Heat exchangers, reactors, and other equipment exposed to high-temperature corrosive gases.

Industrial Furnaces:

• Structural supports, retorts, and radiant heating elements used in extreme heat environments.

Nuclear Industry:

• Reactor components requiring high-temperature strength and corrosion resistance.

Physical Properties:

• Density: 8.22 g/cm³
• Melting Range: 1260–1355°C (2300–2470°F)
• Thermal Conductivity: ~11.2 W/m·K (at room temperature)
• Elastic Modulus: ~205 GPa

Standards and Specifications: Hastelloy X is available in various forms, including sheets, plates, bars, pipes, and fittings, and complies with the following standards:

• ASTM B435: Plate, Sheet, and Strip
• ASTM B619: Welded Pipe
• ASTM B622: Seamless Pipe and Tube
• AMS 5536: Sheet and Plate

Advantages:

• Exceptional resistance to oxidation and thermal cycling.
• High strength and stability at elevated temperatures.
• Excellent workability and weldability for fabrication.
• Long service life in extreme environments, reducing maintenance and replacement costs.

Conclusion:
Hastelloy X (UNS N06002) is the go-to alloy for industries requiring superior performance in high-temperature, high-stress, and corrosive environments. Its unique combination of strength, oxidation resistance, and fabricability makes it indispensable for critical applications in aerospace, power generation, and industrial heating systems.

For further details or tailored recommendations, contact your materials specialist.