What is the difference between Inconel 625 and 750?
Difference Between Inconel 750 and 625
work
Inconel 750 is a nickel-chromium alloy with high strength and good corrosion resistance at high temperatures. It also contains significant amounts of cobalt and aluminum, which increase its strength and resistance to oxidation. Inconel 625, on the other hand, is a nickel-chromium-molybdenum alloy that offers good strength and corrosion resistance over a wide temperature range. It also contains small amounts of niobium and tantalum, which increase its strength and creep resistance.
temperature range
Both Inconel 750 and 625 are known for their good high temperature performance. However, Inconel 750 can withstand slightly higher temperatures than Inconel 625. Inconel 750 can be used in temperatures up to 1,400°F (760°C), while Inconel 625 is typically used in temperatures up to 1,000°F (538°C).
Application areas
Due to its high strength and corrosion resistance at high temperatures, Inconel 750 is commonly used in aerospace and gas turbine components such as turbine blades and impellers. It is also used in industrial furnaces and chemical processing equipment. Inconel 625, on the other hand, is commonly used in marine and offshore engineering, chemical processing, and nuclear industries. Due to its resistance to sour environments, it can also be used in equipment serving sour gases.
Machining and welding
Due to its high strength and hardness, Inconel 750 is more difficult to machine and weld than Inconel 625. Inconel 625 is easier to machine and weld, making it more versatile and typically used in a wider variety of applications.
cost
Inconel 750 is generally more expensive than Inconel 625 due to its higher nickel and cobalt content and its extreme difficulty in manufacturing. Inconel 625 is more cost-effective and therefore more commonly used in various industries.
in conclusion
Inconel 750 and 625 are high performance alloys with excellent heat and corrosion resistance. While they share some similarities, such as high temperature performance and corrosion resistance, there are also differences in composition, temperature range, application, processing, welding and cost. Therefore, it is important to select the right alloy for a specific application. Hopefully this comparison between the Inconel 750 and 625 will help you better understand their differences.
