Inconel 718 Alloy Plate (Ni-Cr-Fe-Nb Alloy) | Unmatched High-Temperature Strength & Fatigue Resistance
✓ Ultra-High Yield Strength: Achieves 1,275 MPa yield strength after aging – 40% stronger than Inconel 625 at 650°C (1,202°F).
✓ Oxidation Resistance: Stable Cr₂O₃ oxide layer formation at 800°C (1,472°F), reducing scaling by 70% vs. 310S stainless steel.
✓ Cryogenic-to-High-Temperature Versatility: Maintains ductility from **-250°C (-418°F)** to 700°C (1,292°F).
✓ Precision Fabrication: Cold-rolled plates with **±0.05mm thickness tolerance** and Ra ≤0.8μm surface finish for CNC machining.
Inconel 718 Alloy Plate (Ni-Cr-Fe-Nb Alloy)
Engineered for aerospace, oil & gas, and nuclear applications demanding extreme mechanical strength and thermal stability, Inconel 718 alloy plate combines a nickel-chromium-iron-niobium matrix (Ni-52.5%, Cr-19%, Fe-18.5%, Nb-5%, Mo-3%) to deliver exceptional yield strength, creep resistance, and corrosion resistance up to 700°C (1,292°F). Certified to AMS 5596, ASTM B637, and ASME SB637, this age-hardenable superalloy outperforms Inconel 625 and Waspaloy in high-stress environments, offering 2x the fatigue lifespan of 316L stainless steel in cyclic load applications.
- Thickness: 0.5mm–50mm (cold-rolled) / 5mm–150mm (hot-rolled)
- Surface Finishes: Pickled, Grinded (Ra ≤1.6μm), Mirror Polished (Ra ≤0.4μm)
- Mechanical Properties (Aged): Yield Strength ≥1,100 MPa | Tensile Strength ≥1,400 MPa | Elongation ≥12% | Hardness ≤40 HRC
| Parameter Category | Value/Description |
|---|---|
| Material Standard | ASTM B637 (Plate/Sheet), AMS 5596 (Aerospace), GB/T 14992 (China) |
| Chemical Composition (%) | Ni (Balance), Cr 17.0–21.0, Fe ≤18.0, Nb+Ta 4.75–5.50, Mo 2.80–3.30, Ti 0.65–1.15, Al 0.20–0.80, C ≤0.08, Mn ≤0.35, Si ≤0.35, S ≤0.015, P ≤0.015, Cu ≤0.30 |
| Tensile Strength (MPa) | ≥1240 (Solution Treated & Aged) |
| Yield Strength (MPa) | ≥1035 (Solution Treated & Aged) |
| Elongation (%) | ≥12 (in 50mm gauge length) |
| High-Temperature Strength | – 650°C: Tensile Strength ≥950 MPa – 650°C: 100h Creep Rupture Strength ≥300 MPa |
| Hardness | Brinell (HBW): 330–400; Rockwell (HRC): 35–45 |
| Density (g/cm³) | 8.19 |
| Melting Range (°C) | 1260–1336 |
| Thermal Conductivity (W/m·K) | 11.4 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 13.0 (20–600°C) |
| Electrical Resistivity (Ω·m) | 1.28 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 200 |
| Oxidation Resistance | Excellent oxidation resistance up to 700°C in air. Stable under cyclic thermal stress. |
| Corrosion Resistance | Resists pitting, chloride stress corrosion, and high-temperature oxidation. Avoid strong acids (e.g., HNO₃). |
| Heat Treatment | – Solution Treatment: 980°C (1h, air cooling) – Aging: 720°C (8h, furnace cool to 620°C, hold 8h, air cool). |
| Surface Finishes | Hot-rolled, Annealed, Pickled, Polished (Ra ≤0.8μm), or Cold-rolled. |
| Plate Dimensions | – Thickness: 0.5mm–100mm – Width: 1000mm–2500mm – Length: 2000mm–8000mm (customizable). |
| Key Applications | Aerospace turbine disks, rocket engine components, nuclear reactor parts, oil/gas downhole tools, and high-temperature fasteners. |
Inconel 718 Alloy Plate (Ni-Cr-Fe-Nb Alloy) Applications
| Industry | Critical Use Cases | Inconel 718 Plate Advantage |
|---|---|---|
| Aerospace | Jet engine turbine disks, landing gear components | 1,275 MPa yield strength at 650°C for 20,000+ flight cycles. |
| Oil & Gas | Subsea wellhead connectors, downhole tools | Resists H₂S/CO₂ corrosion at 200°C (392°F) + 25,000 psi. |
| Nuclear | Reactor core fasteners, control rod housings | Immune to neutron embrittlement and stress corrosion cracking (SCC). |
| Energy | Gas turbine shafts, steam valve stems | Withstands creep deformation at 700°C (1,292°F). |
Inconel 718 Alloy Plate (Ni-Cr-Fe-Nb Alloy) Packaging
Inconel 718 Alloy Plate (Ni-Cr-Fe-Nb Alloy) (UNS N06625/N07718, ASTM B443/ASME SB-443 compliant) deliver unmatched performance in jet engines, gas turbines, and chemical reactors (operating up to 1,200°C). To preserve their oxidation resistance and fatigue strength during global transit, we deploy aerospace-certified packaging systems and intelligent logistics protocols compliant with AMS 5599, NACE MR0175, and ISO 9328-2 standards.
Anti-rust packaging
VCI gas phase anti-rust film + desiccant (12 months moisture-proof for sea transportation)
Reinforcement method
Steel strapping + wooden pallet (load-bearing ≤ 5 tons)
Surface protection
Polyethylene film layered isolation (anti-scratch)
Customization options
Carbon-fiber reinforced epoxy crates with aerogel insulation (ASTM C1728 compliant).
Why Choose Us
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
Inconel 718 Alloy Plate (Ni-Cr-Fe-Nb Alloy) Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
FAQ
Q1: How does Inconel 718 compare to Waspaloy in high-temperature performance?
A: Inconel 718 offers 30% higher yield strength at 700°C and superior weldability, while Waspaloy excels in higher creep resistance above 700°C.
Q2: What aging treatment optimizes mechanical properties?
A: Solution anneal at 955–980°C (1,750–1,800°F) for 1h, air cool, then age at 720°C (1,328°F) for 8h and 620°C (1,148°F) for 8h to achieve AMS 5596 specs.
Q3: Are plates certified for aerospace turbine components?
Full compliance includes:
- AMS 5596/5663 for jet engine parts
- ASME Section III Division 1
- NACE MR0175/ISO 15156-3
Q4: What’s the minimum order quantity (MOQ)?
Standard stock: 5 ton MOQ.
Custom sizes/tempers: 10 tons MOQ (lead time 30 days).
Q5: How to verify material authenticity?
Scan Blockchain NFC tags with AlloyGuard™ app to access:
- Real-time XRF validation against PMI certificates
- Third-party SGS/BV inspection reports
- Blockchain-validated production records
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