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Is Inconel 625 stainless steel?

Is Inconel 625 stainless steel?

Inconel 625 is a member of the nickel-based alloy family. It is an alloy made up of nickel, chromium, and molybdenum, with additional elements such as niobium, titanium and aluminium added in varying amounts. This combination of metals gives Inconel 625 excellent strength and corrosion resistance. But what is the difference between Inconel 625 and stainless steel? Let’s take a closer look.

What Is Stainless Steel?

Stainless steel is an iron-based alloy that contains at least 10% chromium, which helps to prevent corrosion. It also contains other elements, such as nickel and molybdenum, enhancing its corrosion resistance. Stainless steel can be used in various applications, from medical devices to kitchen appliances to construction materials.

Differences Between Inconel 625 and Stainless Steel

Inconel 625 has higher levels of chromium than stainless steel (20% vs 10%, respectively). As a result, it offers superior corrosion and heat resistance compared to stainless steel. Additionally, Inconel 625 is stronger than stainless steel; it has a yield strength of up to 100 ksi compared to 75 ksi for stainless steel. This makes it ideal for applications where high levels of strength are required, such as gas turbines or chemical processing equipment. However, it should be noted that while Inconel 625 has higher levels of chromium than stainless steel, it still needs some form of protection against corrosion in specific environments.


In conclusion, there are several differences between Inconel 625 and stainless steel—namely, the composition of the two metals and their strength level. While both types offer superior corrosion resistance, Inconel 625 provides better heat resistance and greater strength than its counterpart due to its higher levels of chromium content. Choosing these two metals should depend on your specific application requirements and environmental conditions. To ensure you make the right decision for your application needs, consulting with an experienced metal supplier can help you find the perfect material for your project.

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