Table of Contents
Inconel alloys are a family of high-performance, nickel-chromium-based superalloys known for their exceptional resistance to heat, corrosion, and oxidation. These alloys are widely used in environments that involve extreme conditions such as high temperature, pressure, and chemical exposure. Inconel alloys, especially Inconel 625 and Inconel 718, are vital in industries like aerospace, chemical processing, and energy production. Below, we explore the key properties of Inconel alloys, focusing on their mechanical and physical characteristics.
Mechanical Properties of Inconel Alloys
| Property | Inconel 625 | Inconel 718 |
|---|---|---|
| Tensile Strength (MPa) | 1030-1100 | 1034-1280 |
| Yield Strength (MPa) | 550-690 | 930-1100 |
| Elongation (%) | 30-35 | 15-18 |
| Hardness (HRB) | 85-95 | 35-45 |
Physical Properties of Inconel Alloys
| Property | Inconel 625 | Inconel 718 |
|---|---|---|
| Density (g/cm³) | 8.44 | 8.19 |
| Melting Point (°C) | 1290-1350 | 1260-1330 |
| Coefficient of Thermal Expansion (x10⁻⁶/°C) | 13.1 | 13.0 |
| Thermal Conductivity (W/m·K) | 10.5 | 11.4 |
Corrosion Resistance
Inconel alloys are known for their excellent resistance to a wide range of corrosive environments. Inconel 625, for example, is particularly resistant to oxidation, carburization, and chloride stress corrosion cracking, making it ideal for use in chemical processing and marine environments. Inconel 718, on the other hand, performs well in high-temperature applications such as gas turbines, thanks to its strong resistance to oxidation and sulfidation.
Applications of Inconel Alloys
Due to their high strength and resistance to heat and corrosion, Inconel alloys are commonly used in the aerospace, chemical, and power generation industries. Specific applications include:
- Gas turbine components
- Aerospace structural parts
- Heat exchangers
- Marine exhaust systems
- Chemical processing equipment