Inconel 690, also known as Alloy 690, with the UNS designation N06690 and W. Nr. 2.4642, is a a nickel-chromium-iron alloy with excellent resistance to corrosion and oxidation at high temperatures. It is commonly used in applications that involve heat treatment, thermal processing, and corrosive environments, such as in the production of nuclear fuel processing components, steam generators in nuclear power plants, and other high-temperature industrial processes. Inconel 690 offers good mechanical properties and thermal stability, making it suitable for use in extreme conditions.
| Nickel (Ni) | 58% min |
| Chromium (Cr) | 27-31% |
| Iron (Fe) | 7-11% |
| Silicon (Si) | 0.5% max |
| Carbon (C) | 0.05% max |
| Manganese (Mn) | 0.5% max |
| Sulfur (S) | 0.015 max |
| Copper (Cu) | 0.5% max |
| Density | lb/in3 | 0.296 |
| g/cm3 | 8.19 | |
| Melting Range | °F | 2450-2510 |
| °C | 1343-1377 | |
| Specific Heat | Btu/lb•°F | 0.107 |
| J/kg•°C | 450 | |
| Electrical Resistivity | ohm-circ mil/ft | 691 |
| μΩ-m | 1.148 | |
| Permeability at 200 oersteds (15.9 kA/m | 1.001 | |
| oung’s Modulus | 103 ksi | 30.6 |
| GPa | 211 | |
| Poisson’s Ratio | 0.289 |
|
Temperature |
Yield strength |
Tensile strength |
Elongation |
|||
|
Rp 0.2 |
Rm |
A |
||||
|
°C |
°F |
MPa |
ksi |
MPa |
ksi |
% |
|
20 |
68 |
240 |
34.8 |
590 |
85.6 |
30 |
| Bar, Rod and Wire | Seamless Pipe and Tube | Welded Tube | Plate, Sheet, and Strip | Forgings |
| ASTM B 166/ASME SB 166 | ASTM B 163 / ASME SB 163, ASTM B 167 / ASME SB 167 | AASTM B 516/ASME SB 516 | ASTM B 168/ASME SB 168 | ASTM B 564/ASME SB 564 |
Standard product forms of Inconel 690/Alloy 690/UNS N06690/W. Nr. 2.4642 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at [email protected] for full information.
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