Inconel 718 is a typical precipitation-hardened nickel-based superalloy. It possesses excellent high-temperature mechanical strength, outstanding creep resistance, fatigue resistance and reliable corrosion resistance. It can operate stably for a long time under high temperature, high pressure and thermal cycle alternating environments. With stable performance, fine welding performance and easy machining, it is widely applied in thermal power, nuclear power and new energy power equipment, serving as essential high-temperature resistant structural material for power generation core components.
Why Electric Power Industry Uses Inconel 718
| Core Advantage | Industry Application Reason |
|---|---|
| Superior High Temperature Stability | Resist long-term high temperature heat load inside power generation equipment |
| Excellent Thermal Fatigue Resistance | Adapt to temperature alternation caused by equipment start and stop |
| High Pressure Bearing Capacity | Fit high-pressure pipeline and pressure component operation demand |
| High Temperature Oxidation Resistance | Avoid component aging failure caused by high-temperature oxidation |
| Reliable Welding Performance | Convenient for on-site installation, maintenance and pipeline connection |
| Low Failure Rate | Reduce power equipment downtime and maintenance cost |
Applicable Working Conditions
| Application Field | Actual Working Condition |
|---|---|
| Thermal Power Generation Equipment | High temperature flue gas environment, high pressure steam circulation system |
| Nuclear Power Auxiliary Components | High temperature, radiation resistant and closed stable operation environment |
| Power Station Heat Exchanger | Long-term heat exchange, temperature difference alternating working condition |
| High-temperature Steam Pipeline | High pressure steam transmission, continuous high temperature operation |
| Power Generation Turbine Parts | High-speed operation, high load and strong vibration environment |
| New Energy Power Supporting Parts | High temperature resistance and stable structural supporting environment |
Core User Demands in Power Industry
| User Demand | Specific Requirement |
|---|---|
| Long-term Stable Operation | Ensure uninterrupted safe operation of power station equipment |
| High Safety Factor | Strict material inspection to meet power industry safety codes |
| Unified Batch Performance | Consistent quality for large-scale power project matching |
| Standard & Non-standard Customization | Match old equipment replacement and new project design size |
| Complete Technical Documents | Provide full set of test reports for project review and bidding |
| Stable Delivery Cycle | Meet power equipment construction and maintenance construction schedule |
Common Matching Products for Power Industry
| Product Category | Main Usage |
|---|---|
| Inconel 718 Seamless Tube | Power station high-pressure steam pipeline, heat exchange tube |
| Inconel 718 Alloy Bar | Turbine shaft core parts, high-strength power fasteners |
| Inconel 718 Steel Plate | Power equipment high-temperature resistant shell, liner plate |
| Inconel 718 Pipe Fittings | Power pipeline elbow, tee, flange and connecting accessories |
| Inconel 718 Forgings | High-temperature valve body, power pump body core components |
Basic Information
| Item | Details |
|---|---|
| Material Grade | Inconel 718, UNS N07718, W.Nr. 2.4668 |
| Executive Standards | ASTM B637, ASTM B622, ASTM B670, ASME SB-637 |
| Common Delivery State | Solution annealing, aging heat treatment |
Dimensional Tolerance
| Specification | Tolerance Standard |
|---|---|
| Outer Diameter | Comply with ASTM standard industrial tolerance |
| Wall Thickness | Strict tolerance control for pressure-bearing parts |
| Product Length | Custom fixed length and random length available |
| Straightness & Roundness | Meet power equipment precision assembly requirements |
| Surface Treatment | Pickled, polished, blackened optional |
Mechanical Properties
| Performance Index | Standard Minimum Value |
|---|---|
| Tensile Strength | ≥1275 MPa |
| 0.2% Yield Strength | ≥1035 MPa |
| Elongation | ≥12% |
| Hardness | ≤44 HRC |
| Working Temperature Range | -50℃ ~ 650℃ |
Qualification & Test Reports
We can provide EN10204 3.1 material certificate, MTR test report, PMI spectral analysis, UT ultrasonic nondestructive testing, hydrostatic pressure test and other power industry qualified documents.