GH4169 (Inconel 718) High-Temperature Alloy Coil | Unmatched High-Temperature Strength & Fatigue Resistance
✓ Ultra-High Strength: Maintains yield strength ≥1,100 MPa at 650°C (1202°F) – 2x stronger than Inconel 625 at equivalent temperatures.
✓ Oxidation Resistance: Stable Cr₂O₃/NbC oxide layer resists scaling in air/sulfur-rich environments up to 700°C.
✓ Precision Formability: Cold-rolled to **±0.05mm thickness tolerance** with Ra ≤0.8μm surface finish for deep drawing and stamping.
✓ Fatigue Resistance: Withstands 100,000+ fatigue cycles at 550°C (1022°F) for aerospace springs and fasteners.
GH4169 (Inconel 718) High-Temperature Alloy Coil
Engineered for aerospace, oil & gas, and nuclear industries, GH4169 alloy coil combines a nickel-chromium-iron matrix (Ni-52.5%, Cr-19%, Fe-18.5%, Nb-5.1%) to deliver exceptional strength, oxidation resistance, and creep resistance up to 700°C (1292°F). Certified to AMS 5596, ASTM B637, and NACE MR0175, this age-hardenable superalloy outperforms Inconel 625 and Waspaloy, offering 50% higher yield strength at 650°C for critical high-stress forming applications.
- Thickness: 0.5mm–12mm (cold-rolled) / 3mm–25mm (hot-rolled)
- Width: 300mm–2000mm (slitting tolerance ±0.5mm)
- Surface Finishes: Pickled, BA (Bright Annealed), Electropolished (Ra ≤0.4μm)
- Mechanical Properties (Aged): Yield Strength ≥1,100 MPa | Tensile Strength ≥1,400 MPa | Elongation ≥12% | Hardness ≤45 HRC
| Parameter Category | Value/Description |
|---|---|
| Material Standard | GB/T 14992 (China), ASTM B637 (International), AMS 5667 (Aerospace) |
| Chemical Composition (%) | Ni 50–55, Cr 17–21, Fe (Balance), Nb+Ta 4.75–5.5, Mo 2.8–3.3, Ti 0.65–1.15, Al 0.2–0.8, C ≤0.08, Mn ≤0.35, Si ≤0.35, S ≤0.015, P ≤0.015, Co ≤1.0 |
| Tensile Strength (MPa) | ≥1275 (Solution Treated & Aged) |
| Yield Strength (MPa) | ≥1035 (Solution Treated & Aged) |
| Elongation (%) | ≥12 (in 50mm gauge length) |
| High-Temperature Strength | – 650°C: Tensile Strength ≥960 MPa – 650°C: 100h Creep Rupture Strength ≥310 MPa |
| Hardness | Brinell (HBW): 330–400; Rockwell (HRC): 35–45 |
| Density (g/cm³) | 8.22 |
| Melting Range (°C) | 1260–1336 |
| Thermal Conductivity (W/m·K) | 11.4 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 14.4 (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; stable in oxidizing and reducing environments. |
| Corrosion Resistance | Resists pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride and H₂S environments. Avoid nitric acid (HNO₃). |
| Heat Treatment | – Solution Treatment: 950–980°C (air cooling) – Aging: 720°C (8h) + 620°C (8h), air cooling. |
| Surface Finishes | Cold-rolled bright annealed (BA), Pickled & Passivated, Polished (Ra ≤0.6μm). |
| Coil Dimensions | – Thickness: 0.5mm–6.0mm – Width: 50mm–1500mm – Inner Diameter (ID): 300mm–610mm – Outer Diameter (OD): ≤2500mm. |
| Key Applications | Aerospace engine components (turbine seals, springs), nuclear reactor fuel cladding, oil & gas instrumentation, and high-temperature fasteners. |
GH4169 (Inconel 718) High-Temperature Alloy Coil Applications
| Industry | Critical Use Cases | GH4169 Coil Advantage |
|---|---|---|
| Aerospace | Jet engine turbine disks, compressor blades | 1,050 MPa yield strength at 650°C for 20,000+ flight cycles. |
| Oil & Gas | Downhole tool springs, sour gas wellhead components | Resists H₂S >10,000 ppm + CO₂ at 200°C (392°F). |
| Nuclear | Reactor core fasteners, fuel rod clamps | Immune to neutron embrittlement and stress corrosion cracking (SCC). |
| Energy | Gas turbine casings, steam turbine bolts | Withstands creep deformation at 700°C (1292°F). |
GH4169 (Inconel 718) High-Temperature Alloy Coil Product Packaging
GH4169 (Inconel 718) High-Temperature Alloy Coil are engineered for applications in jet engines, gas turbines, and industrial furnaces (operating up to 1,200°C). To preserve their metallurgical integrity and dimensional stability during transit, we deploy aerospace-certified packaging systems and thermal-controlled logistics adhering to 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
IPPC fumigation wooden box (compliant with ISPM15 standard)
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.
GH4169 (Inconel 718) High-Temperature Alloy Coil 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 GH4169 compare to Waspaloy in aerospace springs?
A: GH4169 offers 30% higher fatigue resistance at 550°C and superior weldability, while Waspaloy excels in higher temperature (815°C) oxidation resistance.
Q2: What aging treatment optimizes post-forming properties?
A: Age-harden at 720°C (1328°F) for 8h, furnace cool to 620°C (1148°F), hold for 8h, then air cool to achieve ASTM B637 specs.
Q3: Are coils certified for nuclear reactor use?
Full compliance includes:
- ASME Section III Division 1
- RCC-MRx (2015) for Gen IV reactors
- 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 Smart QR codes with AlloyGuard™ app to access:
- XRF validation against PMI certificates
- Third-party SGS/TÜV inspection reports
- Blockchain-validated production records
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