Our ASTM B637 Inconel 718 spring wire is a high-performance solution built for the toughest high-temperature environments. This nickel-chromium superalloy is engineered to deliver unmatched strength, corrosion resistance, and durability, making it a go-to for industries like aerospace, power generation, and oil and gas. From jet engine turbines to chemical reactors, our spring wire keeps critical components performing under extreme conditions. Let’s dive into what makes this product stand out, 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 alloy packed with niobium, molybdenum, titanium, and aluminum. It’s designed to handle extreme heat, stress, and corrosion, making it perfect for high-temperature applications. Our spring wire meets the stringent ASTM B637 standard, ensuring top-tier quality for critical components. 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 performs reliably 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 mechanical stress. It also resists corrosion from acids, seawater, and hot gases, 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 springs in high-stress environments. 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 springs or reactor components.
|
Item |
Inconel 617 |
Inconel 690 |
Inconel 718 |
Inconel X750 |
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 market for high-performance alloys like Inconel 718 is growing strong, with a projected CAGR of around 4.7% through 2030. This growth is driven by demand in aerospace, power generation, and oil and gas, where materials must withstand extreme heat and corrosion. Aerospace is pushing for fuel-efficient aircraft and advanced jet engines, while power generation is shifting toward cleaner, high-efficiency turbines. Inconel 718’s high strength and creep resistance make it a staple in these sectors.
Sustainability is a big driver. Industries are prioritizing materials that reduce maintenance and extend component life, cutting costs and environmental impact. Inconel 718’s durability in harsh environments aligns perfectly with this trend, ensuring longer service life for critical components. The rise of additive manufacturing is also transforming production, with Inconel 718 being used in 3D-printed springs and parts for lightweight, customized designs.
Supply chain challenges, like nickel price volatility and the complexity of alloy production, mean companies need reliable suppliers. Our optimized manufacturing and stringent quality controls ensure consistent supply and performance, giving us an edge in meeting tight project deadlines. Emerging trends, like hydrogen-fueled turbines and advanced chemical processing, 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 high-temperature applications. In aerospace, it’s used for turbine springs, fasteners, and actuators in jet engines, 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 key in environments exposed to jet fuel and hot combustion gases.
In power generation, our spring wire is found in gas turbine springs, steam generator components, and nuclear reactor supports. Its creep resistance and high-temperature strength ensure long-term performance in high-pressure, high-heat conditions. In oil and gas, it’s used in valve springs and control systems for sour gas wells and offshore rigs, resisting corrosion from hydrogen sulfide and seawater.
Beyond these core industries, Inconel 718 spring wire finds use in chemical processing for reactor springs and heat exchanger components, handling aggressive acids and high temperatures. In defense, it’s used in missile systems and high-stress actuators. Even in automotive racing, it’s found in high-performance valve springs, proving its versatility across demanding, high-temperature 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 (acids, seawater) |
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 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 reactor components, 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.
Our Inconel 718 spring wire is built to perform in the harshest high-temperature environments. 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 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, power generation, and oil and gas industries, we’ve earned a reputation for quality and trust, working with top 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 chemical reactors, 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, delivering high strength and corrosion resistance. -
Why is Inconel 718 spring wire suited for high-temperature uses?
It maintains strength up to 1300°F (700°C) and resists oxidation and creep in extreme heat environments. -
What industries use Inconel 718 spring wire?
Aerospace, power generation, oil and gas, and chemical processing rely on it for high-stress, high-temperature applications. -
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 chloride-ion stress-corrosion cracking in harsh environments. -
Can Inconel 718 spring wire be customized?
Available in diameters from 0.005” to 0.125” and various tempers, tailored to specific high-temperature needs. -
Is Inconel 718 spring wire weldable?
Yes, it’s weldable in the aged condition, making it versatile for complex high-temperature assemblies.