GH4145 (Inconel X-750) High-Temperature Alloy Pipe | Exceptional High-Temperature Strength & Fatigue Resistance
✓ Ultra-High Yield Strength: Achieves 1,100 MPa yield strength after aging – 35% stronger than Inconel 718 at 700°C (1,292°F).
✓ Oxidation Resistance: Stable Cr₂O₃/TiO₂ oxide layer formation at 870°C (1,598°F), reducing scaling by 75% vs. 310S stainless steel.
✓ Cryogenic-to-High-Temperature Versatility: Maintains ductility from **-200°C (-328°F)** to 815°C (1,500°F).
✓ Precision Manufacturing: Seamless/welded pipes with **±0.1mm wall thickness tolerance** and Ra ≤0.8μm internal finish for high-pressure systems.
GH4145 (Inconel X-750) High-Temperature Alloy Pipe
Engineered for aerospace, nuclear, and energy applications demanding extreme mechanical stability and oxidation resistance, GH4145 alloy pipe combines a nickel-chromium-iron matrix (Ni-72%, Cr-15.5%, Fe-7%, Ti-2.5%) to deliver superior yield strength, creep resistance, and corrosion resistance up to 815°C (1,500°F). Certified to AMS 5667, ASTM B637, and ASME SB637, this age-hardenable superalloy outperforms Inconel 718 and Waspaloy in high-stress, high-temperature environments, offering 3x the fatigue lifespan of 304 stainless steel in cyclic load applications.
- Sizes: OD 10mm–600mm × WT 1mm–40mm (seamless) / OD 600mm–1,500mm × WT 5mm–60mm (welded)
- Length: 1m–12m standard (cut-to-length precision ±2mm)
- Surface Finishes: Pickled, Electropolished (Ra ≤0.4μm), Shot Peened
- Mechanical Properties (Aged): Yield Strength ≥1,100 MPa | Tensile Strength ≥1,350 MPa | Elongation ≥15% | Hardness ≤35 HRC
| Parameter Category | Value/Description |
|---|---|
| Material Standard | GB/T 14992 (China), ASTM B637 (International) |
| Chemical Composition (%) | Ni ≥70, Cr 14–17, Fe 5–9, Nb+Ta 0.7–1.2, Ti 2.25–2.75, Al 0.4–1.0, C ≤0.08, Mn ≤1.0, Si ≤0.5, S ≤0.015, P ≤0.015, Cu ≤0.5 |
| Tensile Strength (MPa) | ≥1035 (Solution Treated & Aged) |
| Yield Strength (MPa) | ≥690 (Solution Treated & Aged) |
| Elongation (%) | ≥20 (in 50mm gauge length) |
| High-Temperature Strength | – 700°C: Tensile Strength ≥620 MPa – 700°C: 100h Creep Rupture Strength ≥170 MPa |
| Hardness | Brinell (HBW): 290–360; Rockwell (HRC): 30–38 |
| Density (g/cm³) | 8.28 |
| Melting Range (°C) | 1390–1425 |
| Thermal Conductivity (W/m·K) | 11.7 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 13.4 (20–600°C) |
| Electrical Resistivity (Ω·m) | 1.22 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 214 |
| Oxidation Resistance | Excellent oxidation resistance up to 870°C in air. Stable under cyclic thermal stress. |
| Corrosion Resistance | Resists chloride stress corrosion cracking and high-temperature oxidation. Avoid strong acids (e.g., HNO₃). |
| Heat Treatment | – Solution Treatment: 1100–1150°C (air cooling) – Aging: 705°C (20h, air cooling). |
| Surface Finishes | Seamless, Annealed, Pickled, Polished (Ra ≤0.8μm), or Cold-Drawn. |
| Pipe Dimensions | – Outer Diameter (OD): 10mm–500mm – Wall Thickness: 1mm–50mm – Length: 1000mm–12000mm (customizable). |
| Key Applications | Aerospace turbine exhaust systems, nuclear reactor coolant pipes, high-temperature springs, chemical processing pipelines, and gas turbine components. |
GH4145 (Inconel X-750) High-Temperature Alloy Pipe Applications
| Industry | Critical Use Cases | GH4145 Pipe Advantage |
|---|---|---|
| Aerospace | Jet engine turbine disks, exhaust manifolds | 1,100 MPa yield strength at 700°C for 15,000+ flight cycles. |
| Nuclear | Reactor coolant pipes, control rod housings | Immune to neutron embrittlement and stress corrosion cracking (SCC). |
| Energy | Gas turbine shafts, steam valve stems | Withstands creep deformation at 815°C (1,500°F). |
| Oil & Gas | Subsea wellhead connectors, sour gas pipelines | Resists H₂S/CO₂ corrosion at 150°C (302°F) + 20,000 psi. |
GH4145 (Inconel X-750) High-Temperature Alloy Pipe Product Packaging
GH4145 (Inconel X-750) High-Temperature Alloy Pipe are engineered for aerospace turbines, nuclear reactors, and high-stress industrial applications (operating up to 1,300°C). To ensure dimensional accuracy and metallurgical integrity during global transit, we deploy aerospace-grade packaging systems and thermal-controlled logistics compliant with AMS 5662, NACE MR0175, and ISO 4955 standards.
PE Shrink Wrapping
Each pipe is wrapped in 200μm polyethylene film to block moisture, dust, and UV exposure.
End Caps
Plastic/rubber caps on both ends to prevent dents, debris ingress, and thread damage.
Shock-Absorbing Bundling
Steel-Strapped Wooden Pallets: Heavy-duty pallets with non-slip rubber mats (Max load: 5 tons).
Laser-etched QR codes
- PMI (Positive Material Identification) reports - HIP (Hot Isostatic Pressing) certifications - NADCAP-accredited UT (Ultrasonic Testing) records
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.
GH4145 (Inconel X-750) High-Temperature Alloy Pipe 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 GH4145 compare to Inconel 718 in high-temperature performance?
A: GH4145 offers 35% higher yield strength at 700°C and superior oxidation resistance, while Inconel 718 excels in chloride-rich environments.
Q2: What aging treatment optimizes mechanical properties?
A: Solution anneal at 1,100°C (2,012°F) for 2h, air cool, then age at 845°C (1,553°F) for 24h and 705°C (1,300°F) for 20h to achieve AMS 5667 specs.
Q3: Are pipes certified for nuclear reactor components?
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 35 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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