| Customization: | Available |
|---|---|
| Application: | Aviation, Electronics, Industrial, Medical, Chemical |
| Standard: | JIS, GB, DIN, BS, ASTM, AISI |
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Chemical Composition: Inconel 690 primarily consists of nickel (Ni), chromium (Cr), and iron (Fe), with small additions of other elements such as molybdenum (Mo) and niobium (Nb). The exact composition may vary slightly depending on the specific grade and manufacturer.
High Temperature Resistance: Inconel 690 exhibits remarkable resistance to high temperatures, making it suitable for applications where exposure to heat is a concern. It retains its mechanical strength and structural integrity even at temperatures exceeding 1000°C (1832°F).
Corrosion Resistance: One of the most notable properties of Inconel 690 is its exceptional resistance to corrosion in a wide range of environments, including sulfur-containing atmospheres, solutions, and alkaline media. This corrosion resistance makes it ideal for use in chemical processing, petrochemical, and pollution control industries.
Oxidation Resistance: Inconel 690 demonstrates excellent resistance to oxidation, even in environments with high levels of oxygen and sulfur. This property allows it to maintain its surface integrity and prevent the formation of oxide scales, which can compromise the performance of other materials at elevated temperatures.
Creep and Rupture Strength: The alloy's superior creep and rupture strength make it suitable for applications subjected to prolonged exposure to high temperatures and mechanical stress, such as furnace components, heat exchangers, and thermocouple sheaths.
Thermal Stability: Inconel 690 exhibits good thermal stability, retaining its properties over extended periods of operation at elevated temperatures. This stability minimizes the risk of degradation or failure, ensuring reliable performance in demanding environments.
Fabrication and Machinability: While machining Inconel 690 can be challenging due to its high strength and hardness, it is still readily fabricated using conventional methods such as forging, machining, and welding. However, specialized equipment and techniques may be required to achieve optimal results.
| Parameter | Value |
|---|---|
| Material | Inconel 625 |
| Composition | Nickel (Ni): ~58%, Chromium (Cr): ~21.5%, Molybdenum (Mo): ~9%, Niobium (Nb): ~3.6%, Iron (Fe): ~5% |
| Density | 8.44 g/cm^3 |
| Melting Point | 1290-1350°C (2350-2460°F) |
| Tensile Strength (Room Temperature) | 760 MPa (110,000 psi) |
| Yield Strength (0.2% offset) | 345 MPa (50,000 psi) |
| Elongation at Break | 30% |
| Hardness (HV) | 150-200 HV |
| Electrical Resistivity | 129.6 μΩ·cm at 20°C |
| Thermal Conductivity | 8.4 W/m·K at 21°C |
| Specific Heat Capacity | 444 J/kg·K at 21°C |
| Coefficient of Thermal Expansion | 12.8 µm/m·K (20-100°C) |
| Maximum Operating Temperature | 980°C (1800°F) |
Aerospace and Aircraft Components:
Chemical Processing:
Oil and Gas Industry:
Marine Applications:
Medical Devices:
Power Generation:
In summary, Inconel 625 wire is a high-performance material known for its exceptional corrosion resistance, high temperature strength, and versatility, making it indispensable in a wide range of industrial applications across various sectors.
Raw Material Selection: The production process begins with the selection of high-quality raw materials. Inconel 625 is a nickel-chromium-based superalloy known for its excellent corrosion resistance, high strength, and good fabricability. The primary elements in its composition include nickel, chromium, molybdenum, niobium, and iron.
Melting: The selected raw materials, in the form of metal powders or scrap, are melted in an electric arc furnace or a vacuum induction furnace. This process ensures thorough mixing and homogenization of the alloying elements to achieve the desired chemical composition.
Casting: Once the alloy is molten and properly mixed, it is cast into ingots or billets of the required size and shape. The casting process may involve techniques such as continuous casting or investment casting, depending on the specific requirements of the wire production.
Hot Working: The cast ingots are then subjected to hot working processes such as rolling, forging, or extrusion. These processes involve shaping the material at elevated temperatures to reduce its cross-sectional area and increase its length. Hot working helps refine the microstructure, improve mechanical properties, and achieve the desired wire dimensions.
Cold Drawing: After hot working, the material undergoes cold drawing to further reduce its diameter and improve its surface finish. In this process, the wire is pulled through a series of dies with progressively smaller diameters, while also being annealed intermittently to relieve stress and improve ductility.
Annealing: Annealing is a heat treatment process that involves heating the wire to a specific temperature and then cooling it slowly to relieve internal stresses, refine the grain structure, and enhance the material's mechanical properties.
Surface Treatment: Depending on the application requirements, the Inconel 625 wire may undergo surface treatments such as pickling, passivation, or electroplating to improve its corrosion resistance, appearance, or compatibility with specific environments.
Quality Control: Throughout the production process, stringent quality control measures are implemented to ensure that the Inconel 625 wire meets the required specifications and standards. This includes dimensional inspection, chemical analysis, mechanical testing, and non-destructive testing techniques such as ultrasonic testing or eddy current testing.
Packaging and Delivery: Once the wire has passed quality control checks, it is packaged according to customer requirements and shipped to its destination for use in various industrial applications, including aerospace, chemical processing, marine engineering, and oil and gas exploration.
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