Inconel 751: Nickel-Chromium Alloy With High Strength And Excellent High-Temperature Oxidation Resistance

Inconel 751 Alloy

Inconel 751 is a high-performance nickel-chromium-cobalt alloy designed for superior strength and stability at elevated temperatures. It is engineered to offer exceptional resistance to oxidation, carburization, and high-temperature degradation, making it ideal for demanding applications in aerospace and industrial environments.

Key Features:

• High-Temperature Strength: Inconel 751 maintains excellent mechanical properties at temperatures up to 1300°C (2372°F). It offers a tensile strength of up to 965 MPa (140 ksi) and a yield strength of 620 MPa (90 ksi), ensuring reliable performance under extreme conditions.

• Outstanding Oxidation and Carburization Resistance: The alloy is specifically formulated to resist oxidation and carburization, extending the lifespan of components exposed to high temperatures and aggressive environments. This makes it suitable for use in gas turbines and other high-temperature applications.

• Thermal Properties: Inconel 751 features a thermal conductivity of approximately 12.0 W/m·K, which supports effective heat distribution and resistance to thermal cycling. Its specific heat capacity is about 0.43 J/g·K, contributing to its thermal stability.

• Mechanical Flexibility: The alloy provides a minimum elongation of 20%, allowing it to accommodate significant deformation while maintaining its structural integrity. This property is crucial for components subjected to dynamic loads and stresses.

• Fabrication Versatility: Available in various forms such as sheets, plates, bars, pipes, and welding wire, Inconel 751 can be easily adapted to meet a wide range of industrial and engineering requirements.

Applications:

• Gas Turbines: Used in turbine blades, vanes, and other critical components that operate under high-temperature and high-stress conditions.
• Aerospace Components: Ideal for aerospace applications where high strength and temperature resistance are essential.
• Industrial Equipment: Suitable for high-temperature industrial equipment and processes where durability and performance are required.

Standard Specifications:

• ASTM B166
• ASTM B167
• ASTM B168

Inconel 751 combines high strength, excellent oxidation resistance, and thermal stability, making it an ideal choice for critical applications in extreme environments where reliability and performance are paramount.

Here is a detailed composition table for Inconel 751 Alloy:

This composition ensures that Inconel 751 provides high strength, exceptional resistance to oxidation and carburization, and stability in high-temperature applications.