Inconel Alloy 625/N06625/2.4856/NS3306 with Ease Of Fabrication For Critical Applications
Inconel Alloy 625 (UNS N06625, 2.4856, NS 3306) is a high-performance nickel-chromium alloy known for its exceptional resistance to a wide range of corrosive environments, high-temperature oxidation, and stress corrosion cracking. It is one of the most versatile high-temperature alloys, offering superior performance in both extremely hot and corrosive environments.
Inconel 625 (UNS N06625, 2.4856) is a high-performance nickel-based alloy renowned for its outstanding resistance to oxidation, corrosion, and high-temperature environments. The addition of molybdenum and niobium enhances its resistance to pitting, crevice corrosion, and stress corrosion cracking. With excellent weldability and high mechanical strength, it is widely used in aerospace, marine, chemical, oil and gas, power generation, and other industries where extreme environmental resistance is needed.
Trade Code
| Chemical Composition Wt.% | % | Ni | Cr | Mo | Nb+ta | Fe | Al | Ti | C | Mn | Si | Co | P | S |
| Min | 58 | 20 | 8 | 3.15 | | | | | | | | | |
| Max | | 23 | 10 | 4.15 | 5 | 0.4 | 0.4 | 0.1 | 0.5 | 0.5 | 1.00 | 0.015 | 0.015 |
| Physical Constants | Density(g/cm³) | 8.4 |
| Melting Range(℃) | 1290-1350 |
| Minimum mechanical properties of alloy at room temperature | Typical mechanical properties | Tensile strength Rm N/mm² | Yield strength RP 0.2 N/mm² | Elongation A5 % | Brinell Hardness HB |
| Solution treatment | 830 | 414 | 30 | ≤290 |
Key Features:
- Excellent Corrosion Resistance:
Outstanding resistance to a wide range of aggressive environments, including seawater, acids (sulfuric, phosphoric, and nitric), alkalis, and gases.
Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, making it ideal for harsh chemical and marine environments.
Excellent resistance to oxidation and carburization, maintaining performance even at elevated temperatures (up to 980°C or 1800°F).
- High-Temperature Performance:
Inconel 625 retains high strength and toughness at elevated temperatures, with good resistance to thermal-fatigue, oxidation, and corrosion.
The alloy forms a stable oxide layer that enhances its performance at high temperatures and prevents further degradation.
High tensile strength, fatigue, and creep resistance at elevated temperatures.
Good resistance to thermal expansion and contraction, which makes it suitable for applications where rapid temperature fluctuations occur.
Good weldability, often used in welding and joining processes, including gas tungsten arc welding (TIG), gas metal arc welding (MIG), and submerged arc welding (SAW).
Easily fabricated into wire, sheet, plate, tube, and other forms for a variety of industrial applications.
Can be used in cryogenic temperatures as well as elevated-temperature environments, offering versatility across a wide temperature range.
The inclusion of niobium and molybdenum provides significant resistance to grain boundary precipitation, improving the alloy's toughness and strength at high temperatures.
Molybdenum further enhances the alloy's resistance to crevice corrosion, pitting, and general corrosion.
Applications:
Inconel 625 is used in a wide variety of applications where high performance and resistance to extreme environmental conditions are required, including:
- Aerospace: Turbine blades, exhaust systems, and other high-stress, high-temperature components in gas turbines and jet engines.
- Chemical Processing: Equipment for handling aggressive chemicals, such as reaction vessels, heat exchangers, and flue gas desulfurization units.
- Marine Engineering: Components exposed to seawater, such as seawater piping, heat exchangers, and marine exhaust systems.
- Power Generation: Gas turbines, nuclear reactors, and heat exchangers in power plants.
- Oil and Gas: Equipment used in offshore and subsea applications, such as risers, pipelines, and wellhead components.
- Waste Management: Incinerator components and other parts exposed to high temperatures and corrosive gases.
- Food Processing: Equipment subjected to corrosive environments, including steam generators, tanks, and pipelines.
Common Forms:
- Inconel 625 is available in a variety of forms, including wire, sheet, plate, tube, bar, and weld rods. These forms are used in industries requiring materials with high corrosion resistance, high-temperature strength, and toughness.
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Inconel Alloy 625/N06625/2.4856/NS3306 with Ease Of Fabrication For Critical Applications Images
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