Inconel 625 VS incoloy 800
What is the difference between Inconel 625 and incoloy 800?
These material grades have lower nickel content compared to Inconel 625. These Inconels are resistant to oxidation, carburization, and high temperature corrosion. incoloy 800 is known for its high carbon content, high creep and rupture properties compared to Inconel 625 alloy.
What is Alloy 625 Tube Made Of?
Alloy 625 Nickel Tube is made of a nickel-chromium-molybdenum alloy with the addition of niobium. High strength and toughness at cryogenic temperatures down to 1800°F (about 854°C). Good oxidation resistance, excellent fatigue strength, and good resistance to many corrosives.
What are the disadvantages of Inconel 625?
Disadvantages: Cost: The complex composition of Inconel 625 makes it more expensive to produce, making it more expensive than many other materials. Processing Challenges: The toughness of Inconel 625 makes it more difficult to process, requiring specialized tools and processes.
What is the ASTM standard for Inconel 625?
Inconel 625 pipe is a solid solution strengthened high temperature alloy suitable for high temperature and high pressure applications. Pipes produced to ASTM B444 UNS N06625 specifications are generally seamless.
Inconel 600 vs incoloy 800 Chemical Composition Comparison
| Element | Inconel 600 Requirement (%) | incoloy 800 Requirement (%) | Key Differences |
|---|---|---|---|
| C (Carbon) | ≤ 0.15 | ≤ 0.10 | Stricter limit for 800 |
| Si (Silicon) | ≤ 0.50 | ≤ 1.00 | Higher limit for 800 |
| Mn (Manganese) | ≤ 1.00 | ≤ 1.50 | Higher limit for 800 |
| P (Phosphorus) | ≤ 0.015 | ≤ 0.015 | Identical |
| S (Sulfur) | ≤ 0.015 | ≤ 0.015 | Identical |
| Cr (Chromium) | 14.0 – 17.0 | 19.0 – 23.0 | Significantly higher in 800 |
| Ni (Nickel) | ≥ 72.0 | Not specified | High Ni required for 600, no requirement for 800 |
| Fe (Iron) | 6.0 – 10.0 | ≥ 39.5 | Low Fe range for 600, high Fe minimum for 800 |
| Cu (Copper) | ≤ 0.50 | ≤ 0.75 | Slightly higher limit for 800 |
| Ti (Titanium) | Not specified | 0.15 – 0.60 | Required only for 800 |
| Al (Aluminum) | Not specified | 0.15 – 0.60 | Required only for 800 |
| Inconel 600 | Incoloy 800 | |
|---|---|---|
| Density, g/cm³ | 8.47 | 7.94 |
| Density, lb/in.³ | 0.306 | 0.287 |
| Melting Range, °F | 2470-2575 | 2475-2525 |
| Melting Range, °C | 1354-1413 | 1357-1385 |
| Curie Temperature, °F | -192 | -175 |
| Curie Temperature, °C | -124 | -115 |
Conclusion
Inconel 600 is a high-performance high-temperature alloy with excellent high-temperature corrosion resistance. Incoloy 800 was introduced after Inconel 600 and is a low-cost alternative to Inconel 600.
Inconel 600 is superior to Incoloy 800 in many aspects. You need to choose these two alloys according to the actual situation of the project.
We produce high-quality Inconel 600 and Incoloy 800. If you have any needs in this regard, please contact us.
