Inconel 718 VS Inconel 725
Is Inconel 750 alloy magnetic?
The material has excellent resistance to relaxation and is non-magnetic. It has high temperature strength up to 700°C (1300°F) and oxidation resistance up to 983°C (1800°F). Inconel X-750 alloy is resistant to a wide range of industrial corrosives under both oxidizing and reducing conditions.
What is the difference between Inconel 718 and Inconel 725?
Inconel 718 has a Pitting Resistance Equivalent Number (PREN) of over 31, while Inconel 725 has a PREN of over 45, enabling it to operate in the harshest environments. Gnee Steel (Gnee Steel) offers 725 alloy round bars in diameters from 1 inch to 4 inches (25.4 mm to 101.6 mm), and 718 alloy round bars in diameters from ½ inch to 10 inches (12.7 mm to 254 mm).
What are the equivalent materials to Inconel 718?
Inconel 718 | Alloy 718 | Inconel 718 equivalent materials | AMS 5662 | AMS 5663.
What is the ASTM standard for Inconel 718?
AMS 5596 AMS 5662 ASTM B637. UNS N07718 High Temperature Alloy (UNS N07718) High Performance Alloys stocks and produces Inconel 718 alloy in the following forms: Bars, Flats, Wire, Loose Coils, Reels, Plates, Sheets, Tubes, Fittings, Discs, Machined Parts.
Inconel 718 and Inconel 725 are both nickel-based high-temperature alloys, but they have different compositions and properties, so their application areas are also different:
Inconel 718:
1. Composition: Inconel 718 typically contains about 50-55% nickel, as well as large amounts of chromium (about 17-21%), iron (about 18.5%), niobium (about 5%), and small amounts of molybdenum, titanium, aluminum, and tantalum.
2. Characteristics:
Strength: Excellent strength, especially at high temperatures (up to 1300°F or 704°C).
Corrosion resistance: Good resistance to oxidation and corrosion.
Application: Widely used in aerospace, gas turbines, nuclear reactors, and other high-temperature applications where strength and corrosion resistance are critical. It is known for its reliability in high-stress environments and for maintaining performance at high temperatures.
Inconel 725:
1. Composition: Inconel 725 is a nickel-chromium alloy with the addition of niobium, titanium and molybdenum. Usually the nickel content is about 58%, the chromium content is relatively high (about 19%), niobium (about 5.5%), titanium (about 1.75%), and small amounts of molybdenum (about 3%) and aluminum (about 0.4%).
2. Characteristics:
Strength: Higher strength than Inconel 718, especially in the temperature range of 1200-1800°F (649-982°C).
Corrosion resistance: Has good corrosion and oxidation resistance, similar to Inconel 718.
Application: Mainly used in high-stress environments requiring high temperature and high strength, such as jet engine components, high-strength fasteners and nuclear reactors.
Comparison:
High temperature performance: Inconel 725 has higher strength than Inconel 718 at elevated temperatures (1200-1800°F), which is beneficial for applications that require strength under extremely high temperature conditions.
Strength: Inconel 725 alloy generally has higher strength than 718 alloy, especially at elevated temperatures.
Applications:
Inconel 718 alloy is highly versatile due to its balanced combination of strength and corrosion resistance, and is used across a wide range of industries for a variety of high temperature applications.
Inconel 725 is particularly useful for applications that require higher strength at temperatures higher than Inconel 718 can reliably withstand, making it an ideal choice for aerospace and high-performance engineering applications.
In summary, the choice between Inconel 718 and Inconel 725 depends on specific requirements, such as temperature range, strength needs, and environmental conditions. Inconel 718 is more versatile and has a wider range of applications, while Inconel 725 was selected for its superior strength at higher temperatures, making it suitable for more demanding applications in extreme environments.
