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Inconel 625 vs 825: What’s the Difference

Inconel 625 vs 825

Inconel alloys are nickel-chromium-based materials renowned for their superior resistance to corrosion and high temperature. Two of the most popular varieties in this family of materials are Inconel 625 and 825. These two materials have many similarities, but there are also some key differences between them that you should consider before purchasing. Let’s take a closer look at both Inconel 625 and 825 to help you make an informed decision.

Inconel 625

Inconel 625 is an austenitic nickel-chromium superalloy with excellent resistance to oxidation, pitting, crevice corrosion, and other forms of corruption. It also has excellent strength properties at very high temperatures, making it an ideal choice when working with extreme heat. In addition, it has good weldability and formability, as well as superior fatigue strength, thanks to its low carbon content.

Inconel 825

Inconel 825 is a nickel-iron-chromium alloy designed for chemical processing applications where corrosion resistance is essential. It has excellent corrosion resistance to both organic acids (like acetic acid) and inorganic acids (like hydrochloric acid). It also boasts superior hot strength properties compared to other alloys, making it suitable for use at temperatures up to 1000°F (538°C). Like Inconel 625, it is resistant to stress cracking and displays good formability and weldability.

Difference Between Inconel 625 and Inconel 825

Inconel 625 is a nickel-based superalloy that exhibits excellent corrosion resistance, strength, and toughness. The alloy is resistant to various corrosive media, including acids, alkalis, and salt water. Additionally, Inconel 625 has good weldability and can be easily fabricated.

Inconel 825 is a nickel-based superalloy that exhibits excellent corrosion resistance and strength. The alloy is resistant to various corrosive media, including acids, alkalis, and salt water. Additionally, Inconel 825 has good weldability and can be easily fabricated.

Composition

The primary difference between Inconel 625 and 825 is their composition. Inconel 625 contains chromium, molybdenum, niobium, and titanium, while Inconel 825 does not contain any of these elements. This difference in design gives Inconel 625 better corrosion resistance than Inconel 825.

Applications

Inconel 625 is typically used in applications where corrosion resistance is paramount, such as chemical processing equipment and marine environments. Inconel 825 is generally used in high-strength applications, such as fasteners and pressure vessels.

Price

Inconel 625 is typically more expensive than Inconel 825 due to its superior corrosion resistance.

Conclusion:

When selecting which material best meets your needs—whether it’s Inconel 625 or 825—it’s essential to consider the application requirements carefully and the specific properties offered by each alloy, both these materials can provide superior performance under extreme conditions; however, there may be minor differences between them that could make one more suitable than the other depending on your specific needs or requirements. If you need help selecting appropriate material for your application, contact our team today! We’ll be happy to help you choose the suitable material for your project so you can get the results you need quickly and efficiently.

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