What are the differences in mechanical properties between Incoloy 800 bars and other similar alloys?

Hey there! As a supplier of Incoloy 800 bars, I've had my fair share of chats with folks in the industry about different alloys. One question that pops up a lot is, "What are the differences in mechanical properties between Incoloy 800 bars and other similar alloys?" Well, let's dig into that right now.

First off, let's talk a bit about Incoloy 800. It's a nickel - iron - chromium alloy that's known for its excellent resistance to oxidation and carburization at high temperatures. It also has good strength and ductility, which makes it a great choice for a wide range of applications, from heat exchangers to furnace components.

Now, let's compare it with some other similar alloys.

AMS 5662 Inconel 718

Let's start with AMS 5662 Inconel 718. Inconel 718 is a precipitation - hardenable nickel - chromium alloy. One of the biggest differences between Incoloy 800 and Inconel 718 is their strength. Inconel 718 has much higher strength, especially at elevated temperatures. This is because of its ability to form strengthening precipitates during heat treatment.

For example, Incoloy 800 has a yield strength of around 240 MPa in the annealed condition. In contrast, Inconel 718 can have a yield strength of over 1000 MPa after proper heat treatment. This high strength makes Inconel 718 a top choice for aerospace applications, like turbine engine components, where high - stress conditions are the norm.

However, Incoloy 800 has better formability compared to Inconel 718. Incoloy 800 can be easily formed into different shapes, which is great for applications where complex geometries are required. Inconel 718, on the other hand, due to its high strength, can be more difficult to form and machine.

AISI 630

Next up is AISI 630. AISI 630 is a precipitation - hardening stainless steel. When it comes to corrosion resistance, Incoloy 800 and AISI 630 are quite different. Incoloy 800 is designed for high - temperature corrosion resistance, especially in environments with high oxygen and carbon levels. AISI 630, while it has good corrosion resistance in general, is more focused on corrosion resistance in milder, aqueous environments.

In terms of mechanical properties, AISI 630 has a higher hardness compared to Incoloy 800. After heat treatment, AISI 630 can achieve a hardness of around 38 - 42 HRC, while Incoloy 800 has a much lower hardness. This higher hardness gives AISI 630 better wear resistance, which makes it suitable for applications like valve components and fasteners where wear is a concern.

But Incoloy 800 has better ductility. It can withstand more deformation before fracturing, which is important in applications where the material needs to be bent or stretched without breaking.

AMS 5887 / UNS N06617 / Inconel 617 Alloy Bar

Now, let's look at AMS 5887 / UNS N06617 / Inconel 617 Alloy Bar. Inconel 617 is a nickel - chromium - cobalt - molybdenum alloy. Similar to Incoloy 800, it has good high - temperature oxidation resistance. However, Inconel 617 has a higher melting point compared to Incoloy 800. This means it can withstand even higher temperatures without melting or deforming.

In terms of strength, Inconel 617 has a higher tensile strength than Incoloy 800 at high temperatures. This makes Inconel 617 a great choice for applications in the power generation industry, such as gas turbine burners, where extremely high temperatures are present.

But Incoloy 800 is more cost - effective. If you don't need the extreme high - temperature performance of Inconel 617, Incoloy 800 can be a more budget - friendly option for your project.

Other Considerations

When choosing between Incoloy 800 and these other alloys, it's not just about the mechanical properties. You also need to consider factors like cost, availability, and ease of fabrication.

Cost can be a major factor. As I mentioned earlier, Incoloy 800 is generally more cost - effective compared to some of these high - performance alloys. This can be a big advantage if you're working on a project with a tight budget.

Availability is another important aspect. Incoloy 800 is widely available in the market, which means you can get your hands on it quickly. Some of the other alloys, especially those with more specialized applications, might have longer lead times.

Ease of fabrication is also crucial. If you need to machine, weld, or form the material into a specific shape, Incoloy 800's good formability and weldability can be a big plus.

Conclusion

In conclusion, each of these alloys - Incoloy 800, AMS 5662 Inconel 718, AISI 630, and AMS 5887 / UNS N06617 / Inconel 617 - has its own unique set of mechanical properties. Incoloy 800 stands out for its good balance of properties, including high - temperature corrosion resistance, formability, and cost - effectiveness.

If you're in the market for Incoloy 800 bars or want to discuss which alloy is the best fit for your project, I'd love to have a chat. Whether you need high - strength components, corrosion - resistant parts, or something else entirely, we can work together to find the right solution.

References

• ASM Handbook Volume 2: Properties and Selection: Nonferrous Alloys and Special - Purpose Materials
• Nickel Institute Technical Publications
• Manufacturer's data sheets for Incoloy 800, Inconel 718, AISI 630, and Inconel 617