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Incoloy 825 Circles are top-notch components made from a nickel-iron-chromium alloy, celebrated for its impressive resistance to both corrosive and high-temperature environments. These circles are known for their exceptional stability and durability, particularly in situations that involve acidic, alkaline, or oxidizing conditions. Thanks to their outstanding resistance to stress-corrosion cracking, pitting, and crevice corrosion, they deliver reliable performance in tough industrial systems. Even when faced with fluctuating temperatures and pressures, Incoloy 825 Circles maintain their mechanical integrity, making them perfect for critical applications where long-term reliability is a must.
Incoloy 825 is a nickel-iron-chromium alloy containing molybdenum, copper, and titanium, designed for excellent resistance to corrosion, especially in reducing and oxidizing environments. Its composition includes approximately 38-46% nickel, 19-23% chromium, 2.5-3.5% molybdenum, 1.5-3% copper, and small amounts of titanium, iron, and manganese. Mechanical properties of Incoloy 825 include a tensile strength of around 600 MPa, yield strength of 240 MPa, and an elongation of 40% in 50 mm. It offers excellent resistance to stress corrosion cracking, pitting, and crevice corrosion, making it suitable for harsh industrial environments.
Standards: EN, DIN, JIS, ASTM, BS, ASME, AISI
Rings Diameter: 3″ OD up to 48″ OD Up to 900 lbs max
Circle Diameter: 3″ DIA up to 38″ DIA 1500 lbs max
Specifications : ASTM / ASME SB 168, ASTM / ASME SB 424 , ASTM / ASME SB 443
Forms : Forging & Plate Cut
| STANDARD | UNS | WERKSTOFF NR. | GOST | BS | OR | EN | JIS | AFNOR |
| Incoloy 825 | N08825 | 2.4858 | ЭП703 | NA 16 | XH38BT | NiCr21Mo | NCF 825 | NFE30C20DUM |
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| Incoloy 825 | 0.05 max | 1.00 max | 0.5 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 38.00 – 46.00 | 19.50 – 23.50 | 0.02 max | 0.06 – 1.2 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
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 Incoloy 825 features nickel, iron, and chromium as its core elements, with added molybdenum, copper, and titanium. This well-balanced alloying mix boosts corrosion resistance in sulfuric and phosphoric acids while enhancing mechanical strength and stability during high-temperature exposure. The material boasts good tensile and yield strength, excellent creep resistance, and strong fabrication characteristics, including weldability and formability. These mechanical traits enable Incoloy 825 Circles to perform effectively in environments where aggressive chemicals and high temperatures are the norm.
Incoloy 825 circles offer several advantages, making them ideal for demanding applications. They provide excellent resistance to corrosion in both reducing and oxidizing environments, especially in sulfuric and phosphoric acid conditions. The alloy’s high resistance to stress corrosion cracking, pitting, and crevice corrosion ensures durability in harsh conditions. Incoloy 825 also exhibits outstanding weldability and formability, making it easy to fabricate into complex shapes. Additionally, it maintains good strength and oxidation resistance at elevated temperatures, ensuring long-lasting performance in industries such as chemical processing, power generation, and marine environments.
Incoloy 825 Circles find their place in various applications, including chemical processing plants, petrochemical units, marine engineering, and pollution-control equipment. They’re perfect for fabricating heat exchangers, acid-production equipment, tanks, piping systems, and seawater-handling components. Their corrosion-resistant properties make them invaluable in oil and gas extraction systems, pickling equipment, and offshore structures that face harsh conditions. Additionally, Incoloy 825 Circles are well-suited for power generation, nuclear systems, and thermal processing applications where durable, high-strength alloy components are essential for safe, long-lasting performance.
Incoloy 825 circles are widely used in industries requiring excellent corrosion resistance and high-temperature strength. Common applications include chemical processing equipment, heat exchangers, and storage tanks, particularly in environments with sulfuric acid, phosphoric acid, and seawater. They are also used in nuclear fuel reprocessing, pollution control systems, and power generation, especially in systems exposed to high heat and aggressive environments. Due to their resistance to stress corrosion cracking, they are ideal for oil and gas, marine, and aerospace industries, ensuring durability and reliability in critical operations.
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