Nickel based alloys Inconel 718 and Inconel 750 are important materials for making metal sealing rings. What are the different usage scenarios between them in reality? Today, we will explore this issue together.Here are the application fields of nickel-based alloys Inconel 718 and Inconel 750 respectively:

### **Inconel 718 Applications**

1、**Aerospace Industry** 

- Turbine blades, discs, casings, combustion chambers, and compressor components in aircraft engines. 

- Rocket engine parts (e.g., nozzle extensions, combustion liners).

2、**Energy Sector** 

- Hot-section components of power generation gas turbines (e.g., turbine blades, heat exchangers). 

- Nuclear reactor components (e.g., fuel elements, control rod drive mechanisms, steam generator tubes).

3、**Marine Engineering** 

- Subsea equipment such as pipelines, valves, and fasteners (resistant to saltwater corrosion and high pressure).

4、**Chemical & Petrochemical Industry** 

- High-temperature and corrosive-resistant equipment (e.g., reactors, distillation columns, pumps, and heat exchangers).

 - Drilling components (e.g., well pipes, turbo drill parts).

5、**Automotive Industry**

 - Turbocharger rotors and exhaust system parts in high-performance vehicles (withstanding extreme thermal cycles).

6、**Medical Field** 

- Biocompatible implants and surgical instruments (e.g., bone screws, joint replacements).

7、**Additive Manufacturing (3D Printing)**

- High-complexity components via technologies like Selective Laser Melting (SLM), such as hollow turbine blades.

### **Inconel 750 Applications**

1、**Aerospace Industry** 

- Turbine blades, combustion chambers, nozzles, turbine discs, and compressor blades in aircraft engines.

2、**Nuclear Industry** 

- Critical components in nuclear reactors (e.g., control rods, pressure vessels, fuel assembly structures) due to high radiation resistance.

3、**Power Generation**

- Components in gas and steam turbines, ensuring long service life under high-temperature conditions.

4、**Oil & Gas Industry** 

- Pipelines, valves, and other equipment in high-temperature, high-pressure, and corrosive environments (e.g., sour gas fields).

5、**Chemical Industry**

 - Petrochemical equipment exposed to extreme heat and corrosive media (e.g., reactors, heat exchangers, pipes, valves).

6. **Other Fields** 

- Marine platforms and seawater treatment equipment in offshore engineering. 

- High-pressure vessels, elastic gas seals, and sealing diaphragms in industrial applications.