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Inconel 690 Circles are expertly crafted components made from a high-chromium nickel alloy, celebrated for its remarkable resistance to high-temperature oxidation and harsh corrosive environments. This alloy boasts excellent structural stability, making it a go-to choice for applications that face extreme heat, pressure, and chemically aggressive substances. Inconel 690 Circles are designed to maintain their strength and reliability over extended service periods, ensuring dependable performance in demanding industrial settings where top-notch metallurgical qualities are a must.
Inconel 690 circles are composed primarily of nickel (58% minimum), chromium (27-31%), and iron, along with trace elements like manganese, silicon, and carbon. This composition provides exceptional resistance to oxidation, stress corrosion cracking, and high-temperature environments. Mechanical properties include a tensile strength of approximately 655 MPa, yield strength of 310 MPa, and an elongation of 30% in annealed conditions. These characteristics make Inconel 690 circles ideal for applications in power plants, chemical processing, and heat exchangers, ensuring longevity and reliability under extreme conditions.
| Specifications | ASTM B564, B446, B637 / ASME SB564, SB446, SB637 |
|---|---|
| Standard | DIN, ASTM, BS and all International Standards |
| Flat bar blocks | up to 27″ width and 15,000 lbs |
| Cylinders and sleeves | up to 50″ maximum O.D. and 65″ maximum length |
| Discs and hubs | up to 50″ diameter and 20,000 lbs |
| Rolled, hand forged or mandrel forged rings | up to 84″ maximum O.D. and 40″ maximum length |
| Rounds, shafts and step shafts | up to 144″ maximum length and 20,000 lbs |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
| UNS | Werkstoff Nr. |
| N06690 | 2.4642 |
| Ni | Cr | Fe | Cu | Mn | Si | C | S |
| 58.0 min | 27.00 – 31.00 | 7.00 – 11.00 | 0.50 max | .50 max | 0.50 max | 0.05 max | 0.01 max |
| Density | 8.19 g/cm3 |
| Melting Point | 1343-1377 °C (2450-2510 °F) |
| Tensile Strength | MPa – 66.80 |
| Yield Strength (0.2%Offset) | MPa – 110 |
| Elongation | 39 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
The makeup of Inconel 690 features high concentrations of nickel and chromium, along with small amounts of iron and trace elements that boost its corrosion and heat resistance. Its mechanical properties include high tensile and yield strength, outstanding creep resistance, and exceptional stability at elevated temperatures. The alloy’s impressive ability to resist chloride-induced stress corrosion cracking and oxidizing gases makes it perfect for tough operating conditions. Plus, Inconel 690 is known for its good fabrication characteristics, allowing for forming, welding, and machining when the right techniques are applied.
Inconel 690 circles offer numerous advantages, making them ideal for demanding applications. Their exceptional resistance to oxidation and corrosion, especially in harsh chemical environments, ensures durability and long service life. The material withstands high temperatures and thermal cycling, making it suitable for use in heat exchangers, power plants, and nuclear reactors. Inconel 690 circles also exhibit excellent mechanical strength and stress corrosion cracking resistance, enhancing reliability under extreme conditions. Additionally, their versatility and weldability make them easy to fabricate for various industrial and engineering purposes.
Inconel 690 Circles find their place in nuclear power plants, chemical processing facilities, and high-temperature furnace systems. Their superior corrosion resistance makes them ideal for heat-treating equipment, steam generators, combustion chambers, and tubing support structures. They’re also utilized in marine engineering, gas turbine components, and pollution-control equipment like scrubbers and heaters. Thanks to their durability and thermal stability, Inconel 690 Circles play crucial roles in environments that demand long-lasting, high-performance alloy components capable of withstanding continuous thermal and chemical stress.
Inconel 690 circles are widely used across industries due to their excellent corrosion resistance and high-temperature performance. Key applications include heat exchangers, steam generators, and tubing in nuclear power plants, where resistance to stress corrosion cracking is critical. They are also employed in chemical processing equipment, such as evaporators and condensers, due to their ability to withstand harsh acidic and oxidative environments. Additionally, Inconel 690 circles are used in marine and aerospace components, as well as in industrial furnaces and boilers, ensuring reliable performance under extreme conditions.
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