| Customization: | Available |
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| Application: | Aviation, Electronics, Industrial, Medical, Chemical |
| Standard: | JIS, GB, DIN, BS, ASTM, AISI |
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Inconel 690 is a high-chromium nickel alloy known for its excellent resistance to corrosion and oxidation, particularly in high-temperature environments. Pipes made from Inconel 690 are commonly used in industries such as chemical processing, petrochemical, aerospace, and nuclear power generation, where they encounter extreme temperatures and aggressive chemical environments.
Here's a brief description of Inconel 690 pipes:
Composition: Inconel 690 pipes typically consist of nickel as the primary component, along with a high content of chromium, which imparts exceptional resistance to oxidation and corrosion. It also contains significant amounts of other alloying elements such as iron, cobalt, and molybdenum to enhance its mechanical properties and corrosion resistance.
Corrosion Resistance: Inconel 690 pipes offer outstanding resistance to a wide range of corrosive environments, including sulfuric acid, hydrochloric acid, and alkalis. This corrosion resistance remains stable even at elevated temperatures, making it suitable for use in aggressive chemical processing applications.
Overall, Inconel 690 pipes offer exceptional performance in corrosive and high-temperature environments, making them indispensable components in critical industrial processes where reliability and longevity are paramount.
High Temperature Performance: One of the key characteristics of Inconel 690 pipes is their ability to maintain excellent mechanical properties at high temperatures. They can withstand prolonged exposure to temperatures up to 1000°C (1832°F) without significant degradation, making them ideal for use in high-temperature environments such as furnace components, heat exchangers, and exhaust systems.
Strength and Durability: Inconel 690 pipes exhibit high strength and exceptional fatigue resistance, allowing them to withstand mechanical stresses and vibrations encountered in various industrial applications. This durability ensures long-term reliability and reduces the risk of premature failure, even under demanding operating conditions.
Weldability: Inconel 690 pipes are readily weldable using conventional welding techniques such as gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW). Proper welding procedures and post-weld heat treatment are essential to maintain the integrity and corrosion resistance of the weld joints.
Sizes and Dimensions: Inconel 690 pipes are available in a wide range of sizes, wall thicknesses, and lengths to suit various application requirements. They can be supplied in seamless or welded forms, with diameters ranging from small tubes to large-diameter pipes used in industrial piping systems.
| Ni | Cr | Fe | C | Al | Ti | Mn | Si | Cu | P | S |
| 59.899 | 30.39 | 8.88 | 0.023 | 0.22 | 0.26 | 0.23 | 0.07 | 0.02 | 0.006 | 0.002 |
| Denisity | Melting | Poisson's Ratio | Yield Strength | Tensile Strength | Elongation |
| 8.19 g/cm3 | 1343-1377 | 0.289 | 350 MPa | 700 MPa | 45% |
Inconel 690 rods find applications in various industries due to their excellent corrosion resistance, high-temperature stability, and mechanical strength. Here are some common applications:
Chemical Processing: Inconel 690 rods are widely used in chemical processing equipment such as reactors, vessels, and piping systems, where they encounter corrosive chemicals and high temperatures. Their resistance to corrosion from acids, alkalis, and other harsh chemicals makes them ideal for such environments.
Petrochemical Industry: In refineries and petrochemical plants, Inconel 690 rods are employed in heat exchangers, furnace components, and catalyst support grids. These rods can withstand the high temperatures and corrosive atmospheres present in these applications, ensuring long-term reliability and performance.
Overall, Inconel 690 rods play a crucial role in various industries where resistance to corrosion, high temperatures, and mechanical stresses is essential for reliable performance in demanding environments.
Power Generation: Inconel 690 rods are used in various components of power generation systems, particularly in nuclear power plants. They are utilized in reactor core structures, steam generators, and other critical components where resistance to high temperatures, radiation, and corrosion is essential for safe and reliable operation.
Aerospace: Inconel 690 rods are employed in aerospace applications, including gas turbine engines, where they are used for turbine blades, combustion chambers, and exhaust systems. Their ability to withstand high temperatures and harsh operating conditions makes them suitable for aerospace applications requiring superior performance and durability.
Heat Treatment Furnaces: Inconel 690 rods are utilized in heat treatment furnaces and industrial furnaces where they are subjected to extreme temperatures and thermal cycling. Their resistance to oxidation and thermal fatigue ensures prolonged service life and reliability in these demanding environments.
Waste Incineration: Inconel 690 rods are used in waste incineration plants for grate systems, boiler tubes, and other components exposed to high temperatures and corrosive combustion by-products. Their resistance to oxidation and sulfidation helps maintain the integrity of these critical components in waste management facilities.
Marine Applications: Inconel 690 rods are employed in marine environments for seawater desalination plants, offshore oil and gas platforms, and marine exhaust systems. Their resistance to corrosion from seawater and marine atmospheres makes them suitable for use in marine applications requiring superior corrosion resistance and durability.
The production process for Inconel 690 rods typically involves several steps, including melting, casting, hot working, and finishing. Here's an overview of the typical production process:
Raw Material Selection: The production process begins with the selection of high-quality raw materials, including nickel, chromium, iron, and other alloying elements. These materials are carefully chosen to meet the specific chemical composition requirements of Inconel 690.
Melting: The selected raw materials are melted in an electric arc furnace or vacuum induction furnace under controlled conditions. The melting process ensures thorough mixing of the alloying elements and the formation of a homogeneous melt.
Overall, the production process for Inconel 690 rods is complex and involves multiple steps to ensure the final product meets the demanding requirements of various industrial applications.
Casting: Once the alloy is molten, it is poured into molds to form ingots or billets. The casting process may involve different techniques such as continuous casting or ingot casting, depending on the desired product specifications.
Hot Working: The cast ingots or billets are then subjected to hot working processes such as forging, rolling, or extrusion. Hot working allows for the shaping and refinement of the material's microstructure while maintaining its mechanical properties.
Heat Treatment: After hot working, the Inconel 690 rods may undergo heat treatment processes such as annealing or solution annealing. These heat treatments help relieve internal stresses, improve mechanical properties, and enhance the material's resistance to corrosion and high temperatures.
Cold Drawing or Cold Rolling: In some cases, the hot-worked rods may undergo cold drawing or cold rolling processes to achieve the desired dimensions, surface finish, and mechanical properties. Cold working also refines the microstructure of the material, increasing its strength and hardness.
Surface Treatment: Depending on the application requirements, the surface of the Inconel 690 rods may be treated with processes such as pickling, passivation, or electroplating to improve corrosion resistance and surface finish.
Quality Control: Throughout the production process, rigorous quality control measures are implemented to ensure that the Inconel 690 rods meet the required specifications and standards. This includes testing for chemical composition, mechanical properties, dimensional accuracy, and surface quality.
Finishing and Packaging: Once the rods have been manufactured and passed quality control checks, they are finished to remove any surface imperfections and packaged according to customer requirements for storage, transportation, and further processing.
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