Nickel X750 Inconel Alloy
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Nickel Alloy X750 / Inconel X750 is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F. Alloy X-750 also has excellent properties down to cryogenic temperatures.
Chemical Composition
The chemical composition of Inconel® X750 is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| C | – | 0.08 |
| Mn | – | 1.00 |
| Si | – | 0.50 |
| S | – | 0.01 |
| Cr | 14.00 | 17.00 |
| Ni | 70.00 | – |
| Nb/Cb | 0.70 | 1.20 |
| Ti | 2.25 | 2.75 |
| Al | 0.40 | 1.00 |
| Fe | 5.00 | 9.00 |
| Co | – | 1.00 |
| Ta | – | 0.05 |
| Cu | – | 0.50 |
Mechanical & Physical Properties
| Mechanical & Physical Properties | 20°C | 200°C | 400°C | 427°C | 538°C | 600°C | 649°C | 732°C | 816°C |
|---|---|---|---|---|---|---|---|---|---|
| Ultimate Tensile Strength /MPa | 1503.1 | 1351.4 | 744.6 | 688.8 | - | 622.6 | 593 | - | 600 |
| 0.2% Yield Strength /MPa | 979.1 | 737.7 | 365.4 | 340.6 | - | 278.5 | 250.3 | - | 253.7 |
| Elongation % | 36 | 49 | 47 | 47 | - | 46 | 47 | - | 48 |
| Charpy Impact V-notch /J | 436.6 | 115.2 | 189.8 | - | - | - | - | - | - |
| Coefficient of Thermal Expansion µm/m⁰C | - | - | - | 14.22 | 14.94 | 15.12 | 15.48 | 15.66 | 15.84 |
| Thermal Conductivity /kcal/(hr.m.°C) | - | - | 10 | 11.2 | 12.1 | 12.9 | 15 | 15.66 | 15.84 |
| Modulus of Elasticity / x105 MPa | - | - | 1.95 | 1.89 | - | 1.8 |
Nickel X750 Alloy Benefits Include:
- High strength at temperatures to 1500°F (816°C) after suitable heat treatment
- Creep-rupture strength at high temperatures to about 700oC (1290oF)
- High tensile and creep-rupture properties
- Resistance to a wide variety of industrial corrosives under both oxidizing and reducing conditions
- Excellent workability including machinability and welding
- Resistance to chloride ion stress-corrosion cracking
- Precipitation hardenable
Inconel X-750 Characteristic:
- Iron-Nickel-Chromium based alloy hardened by precipitation of elements Aluminium and Titanium.
- Good corrosion resistance and oxidation resistance even at high temperatures to 980C,
- Good mechanical strength until 800°C,
- Good relaxation resistance until 540°C,
- Good processability and weldability,
- Excellent mechanical properties in low temperature environment.
Packaging&Shipping
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