Inconel X750 UNS N07750 Heat-Resisting Superalloy Bars and plates
This is a precipitation-hardened nickel-based superalloy strengthened by γ’ precipitates with titanium, aluminum and niobium on a nickel-chromium matrix. It delivers outstanding high-temperature rupture strength, creep resistance and high-temperature oxidation resistance, featuring excellent resistance to alternating high-low temperature load and stress relaxation. Meanwhile, it owns favorable hot & cold workability, forgeability and welding stability. The alloy can operate stably for long-term service below 700℃, with prominent resistance to high-temperature fatigue and flue gas corrosion.
Applications of Inconel X750
This material serves as the core raw material for aero-engine turbine disks, blade fasteners, combustion chamber bolts and load-bearing rings. It is widely applied to high-temperature elastic components of gas turbines, nuclear power high-temperature springs and high-temperature locking parts of steam turbines. Besides, it fits heat-resistant structural parts for aerospace vehicles, high-temperature and high-pressure equipment fasteners in petrochemical industry, and military high-temperature resistant sealing elastic components. It is a benchmark special alloy for high-end high-temperature load-bearing and anti-relaxation fastening parts.
Equivalent Grades and Commonly Used Specifications of Inconel X750
| Steel Grade | Specification | Specification Name |
| GH4145/H07750/NS4102 | GB/T 14996 | Wrought superalloy—Cold-rolled sheets and strips |
| GB/T 14992 | Superalloys and intermetallic compounds—Designation and chemical composition | |
| GB/T 15007 | Designations of corrosion-resisting alloy | |
| UNS N07750 / Inconel X-750 | ASTM B637 | Standard Specification for Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service |
| AMS 5542 | Nickel Alloy, Corrosion and Heat Resistant, Plate, Sheet, Strip, Solution Treated | |
| AMS 5698 | Nickel Alloy, Corrosion and Heat Resistant, Wire, Solution Treated | |
| Products produced as per other specifications or technical agreements (if need) are available. | ||
Typical Chemical Composition of Inconel X750
|
Elements |
C | Si | Mn | P | S | Cr | Ni | Co | Cu | Fe | V | Al | Ti |
Nb |
|
Mass Fraction% |
≤0.080 | ≤0.50 | ≤1.00 | ≤0.015 | ≤0.010 | 14.00~17.00 | ≥70.00 | ≤1.00 | ≤0.50 | 5.00~9.00 | ≤0.35 | 0.40~1.00 | 2.25~2.75 |
0.70~1.20 |
| Products produced as per other specifications or technical agreements (if need) are available. | ||||||||||||||
Typical Heat Treatment Condition and Mechanical Properties of Inconel X750
|
Delivery Condition |
Mechanical Properties and Hardness of Heat-Treated Specimens | ||||||
| Rp0.2/(N/mm2) | Rm/(N/mm2) | A/% | Zb/% | Aku2d/J | HBW |
HRC |
|
|
solution at 1149 °C + stabilize + precipitation harden |
≥620 | ≥965 | ≥8 | / | / | ≥262 | ≥26 |
| solution at 982 °C+ precipitation harden(≤63.5mm) | ≥790 | ≥1170 | ≥18 | ≥18 | / | 302~363 |
32~40 |
|
solution at 982 °C+ precipitation harden(63.5mm≤101.6mm) |
≥790 | ≥1170 | ≥15 | ≥15 | / | 302~363 | 32~40 |
| solution anneal at 1093 °C + precipitation harden | ≥689 | ≥1103 | ≥20 | ≥20 | / | 267~363 |
27~40 |
| Products produced as per other specifications or technical agreements (if need) are available. | |||||||
Product Forms and Size Range of Inconel X750
|
Product forms |
Size range |
|
Bars |
Diameter or side length: 5.0mm~1000mm |
| Flats |
thickness: 4.0mm~1000mm width: 300mm~2200mm |
| Produce as other form and size according to technical requirements are available. | |
