Inconel 718 (Alloy 718), with UNS N07718 and W.Nr. 2.4668, is a high-strength, corrosion-resistant nickel-chromium alloy that excels in extreme environments, especially in aerospace and industrial applications. It offers outstanding resistance to heat, oxidation, and corrosion, making it ideal for use in turbine engines, jet engines, and other high-performance components.
Inconel 718 maintains its mechanical properties even at elevated temperatures and has excellent resistance to stress-corrosion cracking. This makes it a preferred choice for demanding applications in industries such as aerospace, power generation, and chemical processing, where reliability and durability under harsh conditions are essential.
| Nickel (Ni) | 50-55% |
| Chromium (Cr) | 17-21% |
| Iron (Fe) | remainder |
| Niobium+Tantalum (Nb+Ta) | 4.75-5.50% |
| Molybdenum (Mo) | 2.8-3.3% |
| Titanium (Ti) | 0.65-1.15% |
| Aluminum (Al) | 0.2-0.8% |
| Cobalt (Co) | 1.0 % max |
| Manganese (Mn) | 0.35% max |
| Silicon (Si) | 0.35% max |
| Phosphorus (P) | 0.015% max |
| Sulfur (S) | 0.015% max |
| Carbon (C) | 0.08% max |
| Boron | 0.006 max |
| Copper (Cu) | 0.3% max |
| Density | lb/in3 | |
| Annealed | 0.296 | |
| Annealed and Aged | 0.297 | |
| Melting Range | °F | 2300-2437 |
| °C | 1260-1336 | |
| Specific Heat at 70°F | Btu/lb °F (at 21°C, J/kg °C) | 0.104 (435) |
| Curie Temperature | °F (°C) | |
| Annealed Material | <-320 (<-196) | |
| Annealed and Aged Material | -170 (-112) | |
| Permeability at 200 oersted and 70°F | ||
| Annealed Material | 1.0013 | |
| Annealed and Aged Material | 1.0011 |
|
Temperature |
Yield strength |
Tensile strength |
Elongation |
Reduction of area |
|||
|
Rp 0.2 |
Rm |
A |
Z |
||||
|
°C |
°F |
MPa |
ksi |
MPa |
ksi |
% |
% |
|
20 |
68 |
1030 |
149.4 |
1280 |
185.6 |
12 |
15 |
| Bar, Rod, wire and Forgings | Seamless Pipe and Tube | Plate, Sheet, and Strip |
| ASTM B 637/ASME SB 637 | ASTM B 983 / ASME SB 983 | ASTM B 670/ASME SB 670, ASTM B 906/ASME SB 906 |
Standard product forms of Inconel 718/Alloy 718/UNS N07718/W.Nr. 2.4668 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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