We’re excited to present our Inconel 718 (GH4169) coil tubes, a high-performance nickel-based superalloy tailored for the toughest aerospace applications. Known for its exceptional strength, heat resistance, and durability, this material is a powerhouse in environments where failure isn’t an option. From jet engines to rocket components, our Inconel 718 coil tubes deliver reliability under extreme temperatures and stresses. Let’s dive into what makes this product unique, explore its applications, and look at the industry trends driving its demand in aerospace and beyond.
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Inconel 718, also referred to as GH4169 in some standards, is a nickel-chromium alloy with significant additions of iron, niobium, and molybdenum. Its composition—roughly 50-55% nickel, 17-21% chromium, 4.75-5.5% niobium, and 2.8-3.3% molybdenum—gives it outstanding resistance to oxidation, corrosion, and high-temperature creep. Our coil tubes are engineered to perform in temperatures ranging from cryogenic levels to 704°C (1300°F), making them ideal for aerospace systems that face intense thermal and mechanical loads.
The coiled format enhances versatility, offering continuous lengths that reduce the need for welds and joints, which are potential weak points in high-stress environments. We manufacture our Inconel 718 coil tubes to meet stringent standards like AMS 5589 and ASTM B670, ensuring precision and quality. This makes them perfect for complex aerospace components, where reliability and performance are critical.
Item | Inconel 600 | Inconel 601 | Inconel 617 | Inconel 625 | Inconel 718 | Inconel 825 | ||
C | ≤0.15 | ≤0.1 | 0.05-0.15 | ≤0.08 | ≤0.05 | ≤0.08 | ≤0.08 | ≤0.05 |
Mn | ≤1 | ≤1.5 | ≤0.5 | ≤0.35 | ≤0.5 | ≤0.35 | ≤1 | ≤1 |
Fe | 6-10 | rest | ≤3 | rest | 7-11 | rest | 5-9 | ≥22 |
P | ≤0.015 | ≤0.02 | ≤0.015 | -- | -- | -- | -- | -- |
S | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.01 | ≤0.01 | ≤0.03 |
Si | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.35 | ≤0.5 | ≤0.35 | ≤0.5 | ≤0.5 |
Cu | ≤0.5 | ≤1 | -- | ≤0.3 | ≤0.5 | ≤0.3 | ≤0.5 | 1.5-3 |
Ni | ≥72 | 58-63 | ≥44.5 | 50-55 | ≥58 | 50-55 | ≥70 | 38-46 |
Co | -- | -- | 10-15 | ≤10 | -- | ≤1 | ≤1 | -- |
Al | -- | 1-1.7 | 0.8-1.5 | ≤0.8 | -- | 0.2-0.8 | 0.4-1 | ≤0.2 |
Ti | -- | -- | ≤0.6 | ≤1.15 | -- | -- | 2.25-2.75 | 0.6-1.2 |
Cr | 14-17 | 21-25 | 20-24 | 17-21 | 27-31 | 17-21 | 14-17 | 19.5-23.5 |
Nb+Ta | -- | -- | -- | 4.75-5.5 | -- | 4.75-5.5 | 0.7-1.2 | -- |
Mo | -- | -- | 8-10 | 2.8-3.3 | -- | 2.8-3.3 | -- | 2.5-3.5 |
B | -- | -- | ≤0.006 | -- | -- | -- | -- | -- |
Shape | Size (mm) |
Wire | 0.02-7.50 |
Rod/Bar | 8.0-200 |
Strip | (0.5-2.5)*(5-180) |
Tube/Pipe | Customized |
Sheet/Plate | Customized |
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Our Inconel 718 coil tubes are designed to excel where other materials can’t keep up. Their high tensile strength (up to 1350 MPa at room temperature) and yield strength (up to 1030 MPa) make them ideal for high-stress applications like turbine blades and rocket nozzles. They resist creep and fatigue at elevated temperatures, maintaining structural integrity in jet engines operating at 600-700°C. The alloy’s corrosion resistance also shines in environments with oxidizing and reducing conditions, such as fuel systems exposed to harsh chemicals.
The coil format is a big advantage in aerospace manufacturing. It allows for seamless integration into automated production lines, reducing material waste and speeding up assembly. The alloy’s excellent weldability and formability mean it can be shaped into intricate designs without compromising strength, which is crucial for compact, lightweight aerospace systems. Our tubing delivers long-term reliability, cutting maintenance costs and downtime in critical applications.
Industry Trends Driving Demand
The aerospace industry is evolving rapidly, and our Inconel 718 coil tubes are at the forefront of meeting new challenges. The global aerospace market is projected to grow at a CAGR of over 4% through 2030, driven by demand for fuel-efficient aircraft and advanced space exploration technologies. Lightweight, high-strength materials like Inconel 718 are critical for reducing aircraft weight while maintaining performance, aligning with the industry’s push for sustainability.
Space exploration is another key driver. With private companies and governments investing in reusable rockets and lunar missions, materials that can withstand extreme thermal cycles and high stresses are in high demand. Our coil tubes are perfect for these applications, offering durability in the vacuum of space and the heat of re-entry. The rise of additive manufacturing in aerospace is also creating opportunities, as our tubing’s formability supports innovative production techniques.
Sustainability is a growing focus, with aerospace companies prioritizing materials that offer long lifespans and reduced maintenance. Our Inconel 718 coil tubes fit this trend perfectly, providing durability that minimizes replacements and supports eco-friendly manufacturing. As automation becomes more prevalent in aerospace production, our continuous coil tubing streamlines processes, boosting efficiency and reducing costs.
Applications of Inconel 718 Coil Tubes
Our Inconel 718 coil tubes are a cornerstone in aerospace and other high-performance industries. Here’s how they’re used:
In aerospace, our coil tubes are critical for jet engines, gas turbines, and rocket propulsion systems. They’re used in fuel lines, hydraulic systems, and heat exchangers, where they handle high-pressure fluids and temperatures up to 704°C. Their resistance to creep and fatigue makes them ideal for turbine blades, discs, and casings, ensuring reliability in demanding flight conditions. In space applications, they’re used in rocket nozzles and cryogenic fuel systems, where they withstand thermal shocks and extreme stresses.
Beyond aerospace, our tubing is used in oil and gas for downhole components and high-pressure control lines. Its corrosion resistance protects against sour gas and chloride-rich environments, ensuring performance in deep-sea drilling and refineries. The coiled design is perfect for compact systems, where space and reliability are critical.
In power generation, our coil tubes are found in gas turbines and heat recovery systems. They resist oxidation and thermal fatigue, making them ideal for high-temperature environments like turbine exhausts. Their durability supports efficient energy production with minimal maintenance
In chemical plants, our tubing handles corrosive fluids in heat exchangers and reactors. Its ability to resist acids and oxidizing agents ensures long-term performance in aggressive environments, reducing downtime and maintenance costs.
Comparison with Other Materials
To show why our Inconel 718 coil tubes are the top choice, here’s a comparison with other materials commonly used in aerospace applications:
Parameter | Inconel 718 (GH4169) | 316 Stainless Steel | Titanium Grade 5 |
|---|---|---|---|
Corrosion Resistance | Excellent (oxidizing/reducing) | Good (mild environments) | Very good (chlorides, acids) |
High-Temperature Strength | Up to 704°C, retains 800-1000 MPa | Limited above 800°C | Up to 400°C, lower strength |
Tensile Strength (Room Temp) | 1350 MPa | 515-690 MPa | 900-1000 MPa |
Yield Strength (Room Temp) | 1030 MPa | 205-310 MPa | 830-910 MPa |
Creep Resistance | Excellent, ideal for turbines | Poor at high temperatures | Moderate |
Weldability | Excellent, no sensitization | Good, risk of sensitization | Good, requires inert gas |
Formability | High, ideal for coiling | Moderate | Moderate |
Density | 8.19 g/cm³ | 8.0 g/cm³ | 4.43 g/cm³ (lighter) |
Inconel 718 outperforms stainless steel in high-temperature strength and corrosion resistance, making it ideal for aerospace applications where reliability is critical. Compared to titanium, it offers better creep resistance and higher temperature tolerance, though titanium is lighter. For heat-intensive systems, our Inconel 718 coil tubes are the smarter choice.
We take pride in producing Inconel 718 coil tubes that set the industry standard. Our manufacturing process uses advanced technology to ensure precision, meeting AMS 5589 and ASTM B670 standards. We source high-purity raw materials to guarantee the alloy’s performance in extreme conditions. Our coil tubes are available in various diameters and wall thicknesses, tailored to your specific aerospace needs.
What makes us stand out is our focus on customization and efficiency. We design our tubing for seamless integration into automated aerospace production lines, minimizing waste and speeding up assembly. Our rigorous quality control includes non-destructive testing and microstructural analysis to ensure every coil is flawless. We also prioritize sustainability, using eco-friendly processes to reduce our environmental footprint. Our global supply chain ensures fast delivery, and our technical support team is always ready to assist with material selection and design optimization.
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About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
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FAQs:
Why is Inconel 718 ideal for aerospace applications?
Its high strength, creep resistance, and performance at temperatures up to 704°C make it perfect for jet engines and rocket components.What environments can Inconel 718 coil tubes handle?
They resist corrosion in oxidizing and reducing conditions, ideal for fuel systems and harsh chemical environments.Can Inconel 718 coil tubes be welded easily?
Yes, they offer excellent weldability without losing strength, using standard methods like TIG.How does Inconel 718 compare to stainless steel?
It provides superior high-temperature strength and corrosion resistance compared to stainless steel.What industries use Inconel 718 coil tubes?
Aerospace, oil and gas, power generation, and chemical processing rely on them for high-performance systems.Is Inconel 718 cost-effective for aerospace?
Its durability and low maintenance needs lead to long-term savings in critical applications.What temperatures can Inconel 718 coil tubes withstand?
They perform from cryogenic temperatures to 704°C (1300°F).Why use coil tubing in aerospace?
Continuous lengths reduce joints, improve efficiency, and enhance reliability in complex systems.
The Future of Inconel 718 Coil Tubes
The future is bright for our Inconel 718 coil tubes. As aerospace pushes for lighter, more efficient aircraft and reusable space vehicles, our tubing will play a key role in meeting these demands. The growth of space exploration, with missions to the moon and beyond, will rely on materials that can handle extreme thermal and mechanical stresses. Inconel 718 is perfectly suited for these challenges, offering unmatched durability.
We’re also seeing increased adoption in additive manufacturing, where our tubing’s formability supports innovative designs. In power generation and chemical processing, the focus on efficiency and sustainability will drive demand for our long-lasting, low-maintenance tubing. We’re investing in R&D to enhance our production processes, ensuring our Inconel 718 coil tubes remain the top choice for high-performance applications. Contact us today to learn how our tubing can elevate your next aerospace project.