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Chemical Data, Mechanical Properties and Specifications for Nickel Alloy 625
Inconel® 625 is a nickel-chromium-molybdenum alloy with niobium added to provide high strength without the need to further harden. Because of this high strength, Alloy 625 can be used to cut thickness and weight from tubing and other forms, thereby improving the transfer of heat.
This alloy is extremely corrosive resistant in severe environments. This allows for use in chemical processing, aerospace and marine engineering, and in nuclear reactors.
We supply Inconel® 625 in a variety of forms, including: Rod, Plate, Sheet, and Tube.
Chemical
| Chemical Range | ||
|---|---|---|
| Element | Minimum | Maximum |
| Aluminum (Al) | -- | 0.40 |
| Carbon (C) | -- | 0.10 |
| Chromium (Cr) | 20 | 23 |
| Cobalt (Co) | -- | 1.0 |
| Copper (Cu) | -- | 0.5 |
| Iron (Fe) | -- |
5.0 |
| Manganese (Mn) | -- | 0.5 |
| Molybdenum (Mo) | 8.0 | 10.0 |
| Nickel (Ni) | 58.0 |
Balance |
| Niobium (Nb) | 3.15 | 4.15 |
| Phosphorus (P) | -- | 0.015 |
| Silicon (Si) | -- | 0.5 |
| Sulphur (S) | -- | 0.015 |
| Titanium (Ti) | -- | 0.40 |
Mechanical
| Typical Mechanical Properties for Nickel Alloy 625 | |||
|---|---|---|---|
| Form | Tensile Strength | Yield Strength | Elongation at Break |
| Annealed Bar | 144 ksi | 84 ksi | 44% |
Physical
| Typical Physical Data | |
|---|---|
| Density | 0.305 lb /in3 |
| Melting Range | 2350-2460 ºF |
| Specific Heat |
0.098 (Btu/lb · ºF) |
| Curie Temperature | < -320 ºF |
| Permiability |
1.0006 (at 200 oerstad (15.9 kA/m) |
| Coefficient of Expansion | 7.1 (70-200 ºF , 10-6 in/in · ºF) |
| Thermal Conductivity | 68 (Btu · in/ft2 · h · ºF) |
| Electrical Resistivity | 776 (ohm·circ mil/ft) |
Inconel is a registered trademark of Special Metals