Alloy X-750
UNS N07750
Description
Alloy X-750 is a nickel-chromium precipitation-hardenable alloy with the additions of aluminum and titanium to increase the mechanical properties when compared to Alloy 600. Alloy X-750 has good resistance to oxidation along with high tensile and creep rupture properties at temperature up to 1300 °F (700 °C). It also has good resistant to a vast array of industrial corrosives under both reducing and oxidizing conditions, and excellent resistance to chloride stress corrosion cracking in a full age hardened condition. Alloy X-750 can be widely used in the fields which in high corrosion and high temperature environment.
Chemical Component
| Ni + Co | Cr | Co | Nb + Ta | Cu | Ti | Al | Fe | C | Mn | Si | S |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 70% min | 14-17% | 1% max | 0.70-1.2% | 0.50% max | 2.25-2.75% | 0.40-1.0% | 5-9% | 0.08% max | 1% max | 0.50% max | 0.01% max |
Basic Information
| Items | Alloy X-750 |
|---|---|
| Catalog | ACMA-Ni-A022 |
| Density | 8.276 g/cm3 |
| Electrical Resistivity | 1.22 x 10-6 Ω·m |
| Corrosion Resistance | 15.05-18.8 , PREN = %Cr + 1.5(%Mo + %W + %Nb) |
| Poisson's Ratio | 0.3 |
| Melting Range | 1393-1427 °C |
Material Forms
Alfa Chemistry offers Alloy X-750 in a variety of forms, including
- Rod
- Bar
- Forging Stock
- Plate
- Sheet
- Strip
- Wire
Typical Mechanical Properties
| Material | Size | Ultimate Tensile Strength, ksi | Yield Strength (0.2% Offset), ksi | Elongation in 4D, % | Reduction of Area, % |
|---|---|---|---|---|---|
| Alloy X-750 Bar | Under 4.0" | 165.0 | 105 | 20 | 25 |
| Alloy X-750 Bar | 4.0 " and over | 160 | 100 | 15 | 17 |
| Material | Size | Ultimate Tensile Strength, ksi | Yield Strength (0.2% Offset), ksi | Elongation in 4D, % | Reduction of Area, % |
|---|---|---|---|---|---|
| Alloy X-750 Bar | Under 4.0" | 165.0 | 105 | 20 | 25 |
| Alloy X-750 Bar | 4.0 " and over | 160 | 100 | 15 | 17 |
| Material | Size | Tensile Strength, ksi | Yield Strength (0.2% Offset), ksi | Elongation in 2", % | Hardness, Rc |
| Alloy X-750 Sheet (Annealed Condition) | 0.010 to 0.024", incl | 140 max | - | 30 min | - |
| Alloy X-750 Sheet (Annealed Condition) | over 0.024-0.125" incl | 130 max | 60 max | 40 min | - |
| Alloy X-750 Sheet (Annealed Condition) | over 0.125-0.250 incl | 130 max | 65 max | 40 min | - |
| Alloy X-750 Sheet After Precipitation Treating (1300 °F/20hr, A.C) | 0.010 to 0.025 incl | 165 min | 105 min | 20 min | 32 min |
| Alloy X-750 Plate After Precipitation Treating (1300 °F/20hr, A.C) | 0.187 to 4.000, excl | 155 min | 100 min | 20 min | 30 min |
Specifications
Rod, Bar, Forging Stock: ASTM B 637, ASME SB 637, ISO 9723, ISO9724, ISO9725, AMS 5667, AMS 5668, AMS 5669, AMS 5670, AMS 5671, AMS 5747, EN10269
Plate, Sheet, Strip: ISO 6208, AMS 5542 and AMS 5598
Wire: BS HR 505, AMS 5698, AMS 5699
Applications
Alloy X-750 can be used in a variety of applications, including:
- Rocket engines
- Gas turbine engines
- Nuclear reactors
- Nuclear valves
- Pressure vessels
- Tooling
- Aircraft structure
- High-temperature springs and bolts
- Gas turbines
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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