Inconel 690 Bars
Inconel 690 Bars are a high performance nickel chromium based super alloy with excellent oxidation resistance, high temperature strength and long term durability. The alloy consists primarily of nickel (58–63%), chromium (28–31%), and small amounts of iron, and is highly resistant to high temperature oxidation and scaling. Inconel 690 is engineered for harsh environments and is used in power generation, nuclear reactors and chemical processing industries. Its special properties allow it to work reliably under extreme thermal and mechanical stresses and is therefore preferred for using components that require high strength and resistance to thermal fatigue.
Chemical Composition of Inconel 690 Bars
The composition of the Inconel 690 bars is crucial for understanding its properties and performance in various industrial applications.
| Grade | Ni | Cr | Fe | C | Mn | S | Mo | Si | Co |
| Inconel 690 | 48.85 - 62 | 20 - 24.0 | Balance | ≤ 0.15 | ≤ 1 | - | 8 - 10 | ≤ 1 | 10-15 |
Thus, this table provides valuable insight into the chemical composition of these Bars, highlighting their properties and suitability.
Mechanical Properties of Inconel 690 Bars
The table provides essential information for engineers and manufacturers to assess the integrity and durability of the Inconel 690 bars in demanding environments.
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.3g/cm³ | 1363°C | ≥ 485 MPa | ≥ 275 MPa | 25 % |
Thus, this valuable data on the Inconel 690 bars's strength, flexibility, and resilience is crucial for ensuring reliability and longevity.
Advantages of Inconel 690 bars
These flexible Bars offer numerous benefits for various industrial applications.
- High-Temperature Oxidation Resistance: This features exceptional resistance to oxidation and scaling during high temperature applications.
- Excellent Corrosion Resistance: Inconel 690 bars are resistant to aggressive corrosive environments, including acidic and oxidising environments, and therefore suited for chemical processing applications.
- Thermal Stability: Lends itself easily to resistance welding applications where the repair is made in the welded assembly environment.
- Strong Mechanical Properties: Inconel 690 bars retain its strength and resilience under high mechanical loads and are, therefore, suitable for high-stress applications.
- Creep and Fatigue Resistance: It shows good creep and thermal fatigue resistance, which prolongs the life of components operating in high temperature environments.
- Versatile Fabricability: Machined, welded, and habitable in complex shapes, it can be used in many engineering applications.
- Long Service Life: Inconel 690 bars are robust and resistant to wear and thermal degradation, reducing maintenance and operational costs.
The Inconel 690 bars offer several advantages that make it suitable for industrial and commercial applications.
Applications of Inconel 690 bars
Due to its excellent features, the Inconel 690 bars are preferred in various industrial applications. Some of the main applications include.
- Nuclear Power Plants: Inconel 690 bars are used in reactor components such as steam generator tubing and other critical parts that must withstand high pressure/high temperature conditions.
- Power Generation: Heat exchangers and other parts operating at high temperatures require long-term durability and strength in gas and steam turbines.
- Chemical Processing: Inconel 690 bars are used in piping, heat exchangers, and parts of reactors exposed to corrosive chemicals at elevated temperatures.
- Aerospace: Inconel 690 bars are used for certain high-stress, high-temperature components in aerospace engines and related applications.
- Heat Treatment Equipment: Inconel 690 bars are used commonly in furnace components and other equipment which require excellent oxidation resistance at elevated temperatures.
- Marine Applications: It is more resistant to corrosion and heat and is found in exhaust systems and other high-temperature parts in marine propulsion systems.
- Industrial Furnaces: High temperature environments where high strength, thermal degradation, and oxidation resistance are required.
Inconel 690 bars are applied across various industries due to their valuable features, which make them versatile.