Difference Between Inconel X750 and Inconel 718
X750 is a Nickel-Chromium alloy made precipitation hardenable by additions of Al and Ti, having creep-rupture strength at high temperatures to about 700°C (1290°F). INCONEL® alloy 718 (UNS N07718/W.Nr. 2.4668) is a high-strength, corrosion-resistant nickel chromium material used at -423° to 1300°F.
Inconel X750
Inconel X750 Chemical Composition
| Grade | Ni | Cr | Al | C | Mn | Ti | Cu | Si | S |
| Inconel X-750 | 70.0 min | 14.0 - 17.0 | 0.40 - 1.0 | .08 max | 1.00 max | 2.25 - 2.75 | 0.50 max | .50 max | .01 max |
Inconel X750 Melting Point, Density and Tensile Strength
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.28 g/cm3 | 1430°C | 1267 MPa | 868 MPa | 25 % |
Inconel X750 Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| Inconel X-750 | 2.4669 | N07750 |
Inconel 718
Inconel 718 Chemical Composition
| Grade | C | Mn | Si | Fe | S | Cr | Al | Ni | |
| 718 | min. | – | – | – | bal | – | 17.0 | 0.2 | 50.0 |
| max. | 0.08 | 0.35 | 0.35 | bal | 0.01 | 21.0 | 0.8 | 55.0 | |
Inconel 718 Melting Point, Density and Tensile Strength
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
Inconel 718 Equivalent Grades
| Grade | UNS No | Old British | Euronorm | GOST | Japanese JIS | ||
| BS | En | No | AFNOR | ||||
| Inconel 718 | N07718 | – | – | 2.4668 | – | – | – |