Our Inconel 718 spring wire is a high-strength champion built for the intense demands of gas turbine components. This nickel-chromium alloy is engineered to deliver exceptional performance in extreme heat, stress, and corrosive environments, making it a go-to for jet engines and power generation turbines. From turbine springs to actuators, our spring wire keeps critical systems running smoothly. Let’s dive into what makes this product special, explore its applications, analyze industry trends, and show why our company is your best choice for Inconel 718 spring wire.
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Inconel 718, also known as GH4169, is a nickel-chromium superalloy packed with niobium, molybdenum, titanium, and aluminum. It’s designed to thrive in the punishing conditions of gas turbines, where high temperatures and mechanical stress are the norm. Our spring wire meets the rigorous 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 key 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 boasts impressive mechanical properties: 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), with oxidation resistance up to 1800°F (982°C). This makes it ideal for springs facing intense thermal cycling and stress. It also resists corrosion from jet fuel, hot gases, and chloride-rich environments, ensuring long-term reliability.
We produce our spring wire using advanced processes like vacuum induction melting (VIM) and vacuum arc remelting (VAR), followed by cold drawing, solution annealing at 1700-1850°F, and two-stage aging at 1325°F and 1150°F. This ensures a fine microstructure and superior fatigue resistance, critical for turbine springs under constant vibration. Available in diameters from 0.005” to 0.125” and various tempers, our wire is customizable to fit your project. Its weldability in the aged condition makes it versatile for complex assemblies like turbine actuators or valve springs.
|
Item |
Inconel 600 |
Inconel 601 |
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 gas turbine industry is thriving, driven by demand in aerospace and power generation. The global nickel alloy market is projected to grow at a CAGR of around 4.7% through 2030, fueled by the need for high-performance materials in jet engines and industrial turbines. Aerospace is pushing for fuel-efficient aircraft and advanced propulsion systems, while power generation is shifting toward cleaner, high-efficiency turbines. Inconel 718’s ability to handle extreme heat, stress, and corrosion makes it a staple in both sectors.
Sustainability is a key driver. Manufacturers are prioritizing materials that reduce maintenance and extend component life, cutting costs and environmental impact. Inconel 718’s durability and creep resistance align perfectly with this trend, ensuring turbines run longer with less downtime. The rise of additive manufacturing is also transforming production, with Inconel 718 being used in 3D-printed springs and components for lightweight, customized designs.
Supply chain challenges, like nickel price volatility and the complexity of alloy production, mean 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 hydrogen-fueled turbines and next-generation jet engines, are increasing demand for materials that can handle extreme conditions, making Inconel 718 spring wire more critical than ever.
Applications of Inconel 718 Spring Wire
Our Inconel 718 spring wire is a workhorse in gas turbine applications. In jet engines, it’s used for turbine springs, fasteners, and actuators, where it handles temperatures up to 1300°F (700°C) and resists fatigue from constant vibration. These springs keep turbine blades and rotors aligned, ensuring engines perform reliably under extreme stress. Its corrosion resistance is critical in environments exposed to jet fuel and hot combustion gases.
In power generation turbines, our spring wire is found in blade springs, valve springs, and control systems. Its creep resistance and high-temperature strength ensure long-term performance in high-pressure, high-heat conditions. The wire’s ability to maintain toughness at cryogenic temperatures (-423°F/-253°C) also makes it ideal for components in liquefied natural gas (LNG) turbines or aerospace fuel systems.
Beyond gas turbines, Inconel 718 spring wire finds use in related high-performance applications. In aerospace, it’s used in airframe actuators and locking mechanisms, resisting corrosion from de-icing fluids and saltwater. In defense, it’s found in missile systems and high-stress actuators. Even in automotive racing, it’s used in high-performance valve springs, proving its versatility across demanding environments.
Comparison Parameters Table
|
Parameter |
Inconel 718 Spring Wire |
Other Nickel Alloys |
|---|---|---|
|
Tensile Strength (Room Temp) |
≥ 185 ksi (1275 MPa) |
70–120 ksi |
|
Yield Strength (Room Temp) |
≥ 150 ksi (1034 MPa) |
30–100 ksi |
|
High-Temp Strength (650°C) |
≥ 1035 MPa |
350–600 MPa |
|
Corrosion Resistance |
Excellent (jet fuel, gases) |
Moderate to good |
|
Oxidation Resistance |
Up to 1800°F (982°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” |
When choosing a supplier for Inconel 718 spring wire, you want someone who delivers more than just material. Our company stands out with advanced manufacturing that produces cleaner, more consistent wire than what you’d get from a typical competitor. We use vacuum melting and precision cold drawing to minimize impurities, ensuring superior fatigue life and reliability for your turbine springs.
We’re AS9100D and NADCAP certified, so our quality meets the toughest industry standards. Every batch undergoes comprehensive testing—chemical analysis, mechanical testing, ultrasonic inspection, and microstructural evaluation—with full traceability. Some competitors might cut corners on testing or lack equivalent certifications, risking inconsistencies that could lead to costly failures.
Our supply chain is built for speed and customization. Whether you need ultra-fine wire for precision turbine 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 counts. We start with high-purity raw materials and use cutting-edge manufacturing to produce wire that meets ASTM B637 standards every time. Our rigorous testing ensures reliability, from corrosion resistance to fatigue performance, so your turbine components can handle extreme heat and stress.
Customization is our strength. Need a specific diameter, temper, or surface finish? We’ll make it happen. Our fast lead times keep your project moving, even for urgent orders. With decades of experience supplying aerospace and power generation industries, we’ve earned a reputation for quality and trust, working with top turbine manufacturers worldwide.
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 power generation turbines, our Inconel 718 spring wire delivers the performance you need, backed by a team that’s with you every step of the way.
For more details, pls directly contact us.
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, offering high strength and corrosion resistance. -
Why is Inconel 718 spring wire ideal for gas turbines?
It maintains strength up to 1300°F (700°C) and resists creep, fatigue, and corrosion in high-stress turbine environments. -
What gas turbine applications use Inconel 718 spring wire?
It’s used in turbine springs, fasteners, actuators, and valve springs for jet engines and power generation turbines. -
How is Inconel 718 spring wire manufactured?
It’s produced via vacuum induction melting, cold drawing, solution annealing, and age hardening for optimal performance. -
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 hot gases. -
Can Inconel 718 spring wire be customized?
Available in diameters from 0.005” to 0.125” and various tempers, tailored to specific turbine requirements. -
Is Inconel 718 spring wire weldable?
Yes, it’s weldable in the aged condition, making it versatile for complex gas turbine assemblies.