Characteristics, advantages and applications of Inconel 718 welding wire
Inconel 718 welding wire offers excellent strength, creep resistance, and corrosion resistance at high temperatures, along with exceptional weldability and post-weld stability, making it an ideal choice for aerospace components, gas turbines, rocket engines, and oil and gas equipment. Advantages include high tensile and yield strengths, excellent fatigue and stress-rupture resistance, and the ability to withstand high and low temperatures while resisting post-weld cracking, unlike many other high-temperature alloys.
What are the three main properties of Inconel 718?
Alloy 718 is a precipitation-hardenable nickel-based alloy with extremely high yield strength, tensile strength, and creep-rupture properties at temperatures up to 1300°F.
Alloy 718 Wire Chemical Composition
| Grade | C | Mn | Si | Cu | S | Cr | Fe | Ni | N |
| Inconel 718 | 0.08 max | 0.35 max | 0.35 max | 0.30 max | 0.15 max | 17.0-21.0 | – | 50.0-55.0 | – |
Inconel 718 Wire Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.2 g/cm3 | 1350 °C (2460 °F) | Psi – 1,35,000 , MPa – 930 | Psi – 75,000 , MPa – 482 | 45 % |
Characteristics and Advantages of Nickel Alloy 718 Wire
Excellent electrical and thermal conductivity
High strength and elastic modulus
Corrosion and wear resistance
Uniform and beautiful surface
Anti-static and radiation-resistant
Long service life, etc.
Characteristics
Age Hardenability:
The alloy can be strengthened by precipitation heat treatment, forming a fine, stable strengthening phase that enhances mechanical properties.
High-Temperature Strength:
It maintains excellent tensile strength, yield strength, and creep-rupture strength up to approximately 648°C (1200°F).
Low-Temperature Properties:
It maintains good ductility and fracture toughness even at very low temperatures, making it suitable for use in both high and low-temperature environments.
Corrosion and Oxidation Resistance:
The chromium-rich composition forms a protective oxide layer, enabling it to withstand corrosive environments and high temperatures.
Excellent Weldability:
It exhibits excellent resistance to post-weld cracking, a common problem with other high-strength, high-temperature alloys.
Applications
Aerospace: Used in gas turbines, rocket engines, and spacecraft components.
Oil and Gas: Applications include downhole components, wellheads, fasteners, and other equipment used in corrosive and high-pressure environments.
Chemical Processing: Suitable for components in chemical plants and refineries where corrosion resistance is critical. Nuclear Industry: Due to its high strength and stability, it can be used in nuclear reactors and related components.
Pumps: Suitable for high-performance pumps.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
