What is the difference between Inconel 600 and 625 Alloy?
Inconel 600 and 625 are both nickel-chromium alloys, but Inconel 625 has superior corrosion resistance and strength due to its higher molybdenum and niobium contents. Inconel 600 is an excellent all-around alloy with high temperature and corrosion resistance, while 625 excels in more severe environments, especially those containing chlorides and high temperatures.
What is Inconel 600 used for?
Inconel 600 alloy is used in the electronics field to make parts such as cathode ray tube brackets, thyratron grids, tube supports and springs. The alloy is a standard manufacturing material for nuclear reactors.
What is the difference between Inconel 625 and INCONEL 725?
INCONEL 625 alloy contains small amounts of cobalt and silver, which are absent in INCONEL 725 alloy. INCONEL 725 alloy has a higher titanium content (1-1.7%, while INCONEL 625 alloy has a maximum of 0.4%), and the rest is made up of iron, while INCONEL 625 alloy has a maximum of 5%.
What are the benefits of Inconel 625?
In addition to high tensile strength, INCONEL 625 also has high creep strength, high rupture strength and excellent weldability. These properties make it suitable for aerospace applications, including duct and exhaust systems, turbine shrouds and seals, and thrust reverser systems.
Equivalent Grades Of Inconel 600 & Inconel 625
| Equivalent Grades | INCONEL 625 | INCONEL 600 |
|---|---|---|
| EN – DIN | NiCr 22 Mo 9 Nb | NiCr 15 Fe |
| ASTM – UNS | N06625 | N06600 |
| W. Nr | 2.4856 | 2.4816 |
| AFNOR | NC 22 DNb | NC 15 Fe 7 TA |
Chemical Composition Of Nickel 600 & 625
| Properties | INCONEL 625 | INCONEL 600 |
|---|---|---|
| Sulfur (S) | 0 to 0.015 | 0 to 0.015 |
| Carbon (C) | 0 to 0.1 | 0 to 0.15 |
| Aluminum (Al) | 0 to 0.4 | - |
| Manganese (Mn) | 0 to 0.5 | 0 to 1.0 |
| Iron (Fe) | 0 to 5.0 | 6.0 to 10 |
| Molybdenum (Mo) | 8.0 to 10 | - |
| Nickel (Ni) | 58 to 68.9 | 72 to 80 |
| Chromium (Cr) | 20 to 23 | 14 to 17 |
| Niobium (Nb) | 3.2 to 4.2 | - |
| Cobalt (Co) | 0 to 1.0 | - |
| Silicon (Si) | 0 to 0.5 | 0 to 0.5 |
| Titanium (Ti) | 0 to 0.4 | - |
| Phosphorus (P) | 0 to 0.015 | - |
| Copper (Cu) | - | 0 to 0.5 |
Nickel Alloy 600 & 625 Temperature Range
| Grades | Heat Treatment | Temperature Range |
|---|---|---|
| 600 | Annealed | 1350 °C (2470 °F) |
| 600 | Full-Hard | 1350 °C (2470 °F) |
| 600 | Half-Hard | 1350 °C (2470 °F) |
| 600 | Hot Worked | 1350 °C (2470 °F) |
| 625 | Annealed | 1290 °C (2350 °F) |
| 625 | Solution Treated | 1290 °C (2350 °F) |
Alloy 600 vs 625 Melting Point
| Grades | Heat Treatment | Melting Onset | Melting Completion |
|---|---|---|---|
| 600 | Annealed | 1350 °C (2470 °F) | 1410 °C (2580 °F) |
| 600 | Full-Hard | 1350 °C (2470 °F) | 1410 °C (2580 °F) |
| 600 | Half-Hard | 1350 °C (2470 °F) | 1410 °C (2580 °F) |
| 600 | Hot Worked | 1350 °C (2470 °F) | 1410 °C (2580 °F) |
| 625 | Annealed | 1290 °C (2350 °F) | 1350 °C (2460 °F) |
| 625 | Solution Treated | 1290 °C (2350 °F) | 1350 °C (2460 °F) |
Conclusion
Gnee Steel is a supplier of Inconel 600 and 625 Alloy, including tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. We work with steel mills to provide customers with 625 alloy, and its products meet or exceed many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Inconel 600 and 625 Alloy tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. You are welcome to contact us for a quote at any time at ss@gneesteel.com
