Our Inconel 718 spring wire is a high-performance solution built for the extreme demands of aerospace applications. This nickel-chromium superalloy is engineered to deliver unmatched strength, corrosion resistance, and durability in environments where failure isn’t an option. From jet engine turbines to airframe systems, our spring wire keeps critical components performing under intense heat and stress. Let’s explore what makes this product stand out, its key applications, industry trends, and why our company is your best choice for sourcing Inconel 718 spring wire.
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Inconel 718, also known as GH4169, is a nickel-chromium alloy loaded with niobium, molybdenum, titanium, and aluminum. It’s a go-to material for aerospace because it thrives in high-temperature, high-stress, and corrosive conditions. Our spring wire meets the stringent ASTM B637 standard, ensuring top-tier quality for critical applications. With a composition of 50-55% nickel, 17-21% chromium, 4.75-5.50% niobium, and other elements, it has a density of 8.19 g/cm³ and a melting range of 1260°C to 1336°C.
Our Inconel 718 spring wire is designed for precision. It offers a minimum tensile strength of 185 ksi (1275 MPa), yield strength of 150 ksi (1034 MPa), and 12% elongation at room temperature. It holds up in temperatures from -423°F (-253°C) to 1300°F (700°C) and resists oxidation up to 1800°F (980°C). This makes it perfect for springs and fasteners that face extreme thermal cycling and mechanical stress.
We produce our spring wire using advanced processes like vacuum induction melting (VIM) and vacuum arc remelting (VAR), followed by cold drawing and precise heat treatments—solution annealing at 1700-1850°F and two-stage aging at 1325°F and 1150°F. This ensures a fine microstructure and excellent fatigue resistance, critical for aerospace springs. Available in diameters from 0.005” to 0.125” and various tempers, our wire is customizable for specific applications. It’s also weldable in the aged condition, making it versatile for complex assemblies like turbine actuators or valve springs.
Item | Inconel 601 | Inconel 617 | Inconel 625 | Inconel 690 | 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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The aerospace industry is soaring, and high-performance materials like Inconel 718 are fueling its growth. The global nickel alloy market is projected to grow at a CAGR of around 4.6% through 2030, driven by rising demand for fuel-efficient aircraft, advanced jet engines, and space exploration. Lightweight, durable materials are critical as aerospace companies push for higher performance and lower emissions. Inconel 718’s ability to handle extreme temperatures and cyclic loading makes it a staple in next-generation designs.
Sustainability is a big driver. Aerospace manufacturers are prioritizing materials that reduce maintenance and extend component life, cutting costs and environmental impact. Inconel 718 spring wire fits perfectly, offering durability in harsh conditions like jet engine combustion zones. The rise of additive manufacturing is also shaking things up, with Inconel 718 being used in 3D-printed springs and components for customized, lightweight designs.
Supply chain challenges, like nickel price volatility and the complexity of high-performance alloy production, mean aerospace companies need reliable suppliers. Our streamlined manufacturing and rigorous quality controls ensure consistent supply and performance, giving us an edge in meeting tight project deadlines. Emerging trends, like electric propulsion systems and hypersonic aircraft, are also increasing demand for materials that can handle extreme conditions, making Inconel 718 spring wire more relevant than ever.
Applications of Inconel 718 Spring Wire
Our Inconel 718 spring wire is a workhorse in aerospace. It’s used in turbine springs and fasteners for jet engines, where it handles temperatures up to 1300°F (700°C) and resists fatigue from constant vibration and thermal cycling. These springs keep turbine blades and rotors aligned, ensuring engines run smoothly under extreme stress.
In airframe systems, the wire is formed into valve springs, actuators, and locking mechanisms. Its corrosion resistance is critical in environments exposed to jet fuel, de-icing fluids, and saltwater, especially for aircraft operating in coastal or marine regions. The wire’s ability to maintain toughness at cryogenic temperatures (-423°F/-253°C) also makes it ideal for spacecraft components, like fuel system springs in liquid-propelled rockets.
Beyond aerospace, Inconel 718 spring wire finds use in related high-performance applications. In power generation, it’s used in gas turbine springs exposed to high temperatures. In defense, it’s found in missile systems and high-stress actuators. Even in automotive racing, the wire is used for high-performance valve springs in engines pushing the limits of heat and speed. Its versatility and reliability make it a go-to for any application demanding precision and durability.
Choosing the right supplier for Inconel 718 spring wire is critical, and we stand out from the crowd. Our wire is produced with cutting-edge vacuum melting and cold-drawing techniques, resulting in cleaner material with fewer defects than what you’d get from a typical competitor. This means better fatigue life and reliability for your aerospace components.
We’re AS9100D and NADCAP certified, so our quality meets the toughest aerospace standards. Every batch undergoes rigorous testing—chemical analysis, mechanical testing, ultrasonic inspection, and microstructural evaluation—with full traceability. Some competitors might skip comprehensive testing or lack the same certifications, risking inconsistencies that could lead to costly failures.
Our supply chain is optimized for speed and customization. Whether you need ultra-fine wire for precision springs or heavier gauges for actuators, we deliver tailored solutions fast. Many competitors struggle with long lead times or limited temper options, but we prioritize flexibility to keep your project on track. Our technical team works closely with you to ensure the wire meets your exact specs, offering support that sets us apart.
Why Choose Our Inconel 718 Spring Wire?
Our Inconel 718 spring wire is built to perform where it matters most. We start with high-purity raw materials and use advanced manufacturing to produce wire that meets ASTM B637 standards every time. Our rigorous testing ensures reliability, from chemical composition to fatigue performance, so your aerospace components can withstand the toughest conditions.
Customization is our strength. Need a specific diameter, temper, or surface finish? We’ve got you covered. Our fast lead times keep your project moving, even for urgent orders. With decades of experience supplying aerospace giants, we’ve built a reputation for quality and trust.
We’re also committed to sustainability. Our durable wire reduces maintenance and replacement costs, aligning with the industry’s push for greener solutions. From jet engines to spacecraft, our Inconel 718 spring wire delivers the performance you need, backed by a team that’s with you every step of the way.
Comparison Parameters Table
Parameter | Inconel 718 Spring Wire | Other Nickel Alloys |
|---|---|---|
Tensile Strength (Room Temp) | ≥ 185 ksi (1275 MPa) | 100–160 ksi |
Yield Strength (Room Temp) | ≥ 150 ksi (1034 MPa) | 80–130 ksi |
High-Temp Strength (650°C) | ≥ 1035 MPa | 600–900 MPa |
Corrosion Resistance | Excellent (jet fuel, saltwater) | Moderate to good |
Oxidation Resistance | Up to 1800°F (980°C) | Up to 1600°F (870°C) |
Fatigue Resistance | Superior for cyclic loading | Moderate |
Temperature Range | -423°F to 1300°F | -200°F to 1000°F |
Diameter Range | 0.005”–0.125” | 0.010”–0.150” |
Inconel 718 spring wire is a critical material for aerospace, offering unmatched strength, corrosion resistance, and fatigue life in extreme conditions. With a growing market driven by fuel-efficient aircraft, space exploration, and sustainable practices, this wire is more essential than ever. Our company’s advanced manufacturing, rigorous quality control, and customer-focused approach make us the top choice for Inconel 718 spring wire. Whether you’re building turbine springs or spacecraft actuators, our wire is engineered to perform, and we’re here to help you soar.
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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:
What is Inconel 718 spring wire made of?
It’s a nickel-chromium alloy with niobium, molybdenum, titanium, and aluminum, delivering high strength and corrosion resistance.Why is Inconel 718 spring wire used in aerospace?
It maintains strength up to 1300°F (700°C), resists corrosion, and handles high-stress conditions in aircraft components.What aerospace applications use Inconel 718 spring wire?
It’s used in turbine springs, fasteners, valve springs, and actuators for jet engines and airframe systems.How is Inconel 718 spring wire manufactured?
It’s produced via vacuum induction melting, cold drawing, solution annealing, and age hardening for optimal spring properties.What are the mechanical properties of Inconel 718 spring wire?
Minimum tensile strength of 185 ksi (1275 MPa), yield strength of 150 ksi (1034 MPa), and 12% elongation.Does Inconel 718 spring wire resist corrosion?
Yes, it resists pitting, oxidation, and stress-corrosion cracking in harsh environments like jet fuel and saltwater.Can Inconel 718 spring wire be customized?
Available in diameters from 0.005” to 0.125” and various tempers, tailored to specific aerospace needs.Is Inconel 718 spring wire weldable?
Yes, it can be welded in the aged condition, making it versatile for complex aerospace assemblies.