Basic Information
| Item | Details |
|---|---|
| Material Grade | Inconel 718, UNS N07718, W.Nr. 2.4668, DIN 2.4668 |
| Executive Standards | ASTM B637, ASTM B622, ASTM B670, ASME SB-637, ASME Section III (Nuclear Grade), AMS 5662 |
| Delivery Condition | Solution annealing + aging treatment, nuclear grade surface treatment |
| Purity Requirement | Ultra-low impurity content, no harmful elements affecting nuclear safety |
| Applicable Nuclear Reactor Type | Pressurized Water Reactor (PWR), Boiling Water Reactor (BWR), Advanced Nuclear Reactors |
Mechanical Properties (Nuclear Grade, Solution & Aging Treated)
| Performance Index | Standard Minimum Value |
|---|---|
| Tensile Strength | ≥1275 MPa |
| 0.2% Yield Strength | ≥1035 MPa |
| Elongation | ≥12% |
| Reduction of Area | ≥40% |
| Hardness | ≤44 HRC |
| Impact Toughness (Room Temperature) | ≥60 J/cm² |
| High-Temperature Creep Strength | ≥690 MPa (650℃, 1000h) |
| Radiation Resistance | No obvious performance degradation after long-term γ-ray radiation |
Dimensional Tolerance (Nuclear Grade Precision)
| Specification | Tolerance Standard |
|---|---|
| Outer Diameter | Strictly comply with ASME Section III and ASTM B637 nuclear grade tolerance, ±0.01mm (precision grade) |
| Wall Thickness | Ultra-precise control, deviation ≤±0.015mm, ensure pressure-bearing safety |
| Product Length | Custom fixed length (1m~12m) or cut-to-size, tolerance ±0.3mm/m |
| Straightness & Roundness | Straightness ≤0.15mm/m; Roundness ≤0.01mm, meet nuclear component assembly precision |
| Surface Finish | Nuclear grade pickling, no burr, no defects, surface roughness Ra ≤0.8μm |
Why Nuclear Power Industry Uses Inconel 718
| Core Advantage | Industry Application Reason |
|---|---|
| Excellent Radiation Resistance | Resist long-term nuclear radiation (γ-ray, neutron radiation) without performance degradation, ensure component safety |
| Superior High-Temperature Creep Resistance | Adapt to long-term high-temperature (600-650℃) operation of nuclear reactor core and primary circuit |
| Strong Corrosion Resistance | Resist corrosion from high-temperature, high-pressure reactor coolant (deionized water, boric acid solution) and steam |
| High Safety & Reliability | Strict nuclear grade quality control, zero material defects, low failure rate, avoid nuclear leakage risks |
| Good Welding Performance | Convenient for on-site welding and assembly of large nuclear components, ensure welding quality and structural integrity |
| Long Service Life | Stable performance for 30-40 years, match the service life of nuclear power plants, reduce maintenance costs |
| Compliance with Nuclear Standards | Meet ASME Section III, ASTM nuclear grade standards, recognized by global nuclear regulatory authorities |
Applicable Working Conditions (Nuclear Power Scenarios)
| Application Field | Actual Working Condition |
|---|---|
| Nuclear Reactor Core Components | High temperature (600-650℃), high pressure (15-18MPa), long-term nuclear radiation, reactor coolant corrosion |
| Primary Circuit System | High-temperature, high-pressure deionized water/steam circulation, radiation environment, pressure-bearing operation |
| Secondary Circuit System | High-temperature steam, medium pressure, no radiation, corrosion resistance to steam and condensate |
| Nuclear Power Heat Exchangers | High temperature difference, high pressure, long-term heat exchange, coolant corrosion |
| Nuclear Valve & Pump Components | High pressure, high temperature, frequent switch, resistance to reactor coolant erosion |
| Nuclear Safety Auxiliary Equipment | Stable operation under extreme conditions (e.g., accident conditions), radiation resistance |
Core User Demands in Nuclear Power Industry
| User Demand | Specific Requirement |
|---|---|
| Nuclear Safety Priority | Meet the highest safety standards, no material defects, avoid nuclear leakage risks |
| Radiation Resistance | Stable performance under long-term nuclear radiation, no performance degradation |
| High-Temperature & Pressure Resistance | Adapt to reactor core and primary circuit high-temperature, high-pressure environment |
| Corrosion Resistance | Resist high-temperature reactor coolant and steam corrosion, long service life |
| Strict Quality Control | 100% inspection, zero defects, complete traceability of material and processing |
| Standard Compliance | Fully comply with ASME Section III, ASTM nuclear grade standards and national nuclear regulations |
| Customization Capability | Support non-standard size, special heat treatment and precision machining for nuclear components |
| Complete Documentation | Provide full set of nuclear grade test reports and certification for regulatory review |
Common Matching Products for Nuclear Power Industry
| Product Category | Main Usage |
|---|---|
| Inconel 718 Seamless Tube | Primary/secondary circuit pipelines, heat exchanger tubes, reactor coolant conveying tubes |
| Inconel 718 Alloy Bar | Nuclear valve stems, pump shafts, reactor core structural bars, high-strength fasteners |
| Inconel 718 Steel Plate | Nuclear reactor pressure vessel liners, heat exchanger shells, safety shell components |
| Inconel 718 Pipe Fittings | Nuclear pipeline elbows, tees, flanges, reducers (pressure-bearing, corrosion-resistant) |
| Inconel 718 Forgings | Nuclear valve bodies, pump impellers, reactor core support components, steam generator parts |
| Inconel 718 Precision Parts | Nuclear instrument components, safety control system parts, radiation-resistant accessories |
Supplementary Information (Nuclear Grade Special Requirements)
| Item | Details |
|---|---|
| Traceability System | Full material traceability from raw material to finished product, complete production record |
| Quality Inspection Process | 100% PMI spectral analysis, UT/RT/MT nondestructive testing, chemical composition and mechanical performance test |
| Surface Treatment | Nuclear grade pickling, passivation, no oxide scale, no contamination, meet nuclear cleanliness requirements |
| Packaging Requirements | Anti-corrosion, anti-contamination packaging, suitable for long-distance transportation and nuclear site storage |
| Transportation Standard | Comply with international nuclear material transportation regulations, with hazard identification and protection measures |
Nuclear Grade Certifications & Test Reports
| Certification/Report Type | Details |
|---|---|
| Quality Certification | ISO 9001, ASME N Stamp (Nuclear Grade Certification), ISO 14001, OHSAS 18001 |
| Test Reports | EN10204 3.2 (Nuclear Grade), MTR Material Test Report, PMI Spectral Analysis Report, UT/RT/MT Nondestructive Testing Report, Creep Test Report, Radiation Resistance Test Report, Corrosion Test Report |
| Regulatory Approval | Compliant with NRC (U.S. Nuclear Regulatory Commission), IAEA (International Atomic Energy Agency) requirements |
Packaging
We adopt export-standard packaging, including wooden cases, bundling packaging, plastic end caps and waterproof films to ensure safe transportation.
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