INCONEL® alloy X-750 is a nickel-chromium alloy that is precipitation hardenable and possesses high strength and corrosion resistance at elevated temperatures.
Chemical composition
| Composition | ASTM B637 UNS N07750 % |
| Carbon | 0.08 max |
| Manganese | 1.00 max |
| Sulfur | 0.01 max |
| Silicon | 0.50 max |
| Chromium | 14.00 - 17.00 |
| Niobium + Tantalum | 0.70 - 1.20 |
| Titanium | 2.25 - 2.75 |
| Aluminum | 0.40 - 1.00 |
| Iron | 5.00 - 9.00 |
| Cobalt | 1.00 max |
| Copper | 0.50 max |
| Nickel | 70.00 min |
Physical properties
| Metric | English | |
| Density | 8.28 g/cm³ | 0.299 lbs/in³ |
| Modulus of Elasticity | 214 GPa | 31.0 Mpsi |
| Electrical Resistivity | 1.22 µohm*m | 734 µohm*ft |
| Thermal Conductivity | 12.0 W/(m*°C) | 83 BTU*in/(hr*ft²*°F) |
| Coefficient of thermal expansion | 12.6 µm/m*°C) | 7.0 µin/(in*°F) |
*Values calculated at 22 °C [72 °F]
Mechanical properties
| Cold worked % |
Yield strength |
Ultimate tensile strength |
Elongation |
| 0 | 393 MPa [57 ksi] | 855 MPa [124 ksi] | 38 |
| 20 | 665 MPa [95 ksi] | 1007 MPa [146 ksi] | 19.3 |
| 50 | 1193 MPa [173 ksi] | 1303 MPa [189 ksi] | 2.3 |
|
60 |
1289 MPa [187 ksi] | 1462 MPa [212 ksi] | 1.8 |
|
68 |
1310 MPa [190 ksi] | 1538 MPa [223 ksi] | 1.8 |
|
75 |
1310 MPa [190 ksi] | 1586 MPa [230 ksi] | 1.9 |
|
* Values are typical and may not represent all diameters. Test method will affect results. |
|||