Product Sheet
Inconel 718
A nickel-chromium superalloy engineered for high-temperature and high-strength applications.
About Inconel 718
Inconel 718 is a nickel-based alloy renowned for its exceptional resistance to heat, corrosion and mechanical stress in extreme environments. This alloy is primarily used in aerospace, energy, petrochemical, and turbine manufacturing sectors. It combines excellent high-temperature oxidation resistance with enhanced mechanical strength, thanks to the addition of niobium and molybdenum.
Due to its outstanding performance, Inconel 718 is particularly valued in applications where resistance to corrosive environments and temperatures exceeding 650°C (1200°F) is essential.
Technical Specifications and Composition of Inconel 718
Nickel-Based Alloy
Inconel 718 is a nickel-rich alloy, providing outstanding heat and corrosion resistance while maintaining stability at elevated temperatures.
Excellent heat resistance
The alloy retains its strength and mechanical properties even in extremely hot conditions.
Oxidation & Corrosion Resistance
It performs exceptionally well in sulphurous, acidic, and saline environments—ideal for marine and petrochemical applications.
Superior Mechanical Properties
With niobium and molybdenum content, Inconel 718 offers excellent strength, creep resistance, and rupture performance under high-temperature stress.
Ease of Fabrication
This alloy is easy to weld and form, allowing for the production of complex components with high precision.
Approximate Composition
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Nickel (Ni) : 50-55 %
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Chromium (Cr): 17–21%
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Iron (Fe): 18–23%
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Molybdenum (Mo): 2.8–3.3%
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Niobium (Nb) : 4.75-5.5 %
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Titanium (Ti): 0.65–1.15%
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Aluminium (Al) : 0.2-0.8 %
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Manganese (Mn): ≤ 0.35%
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Silicon (Si): ≤ 0.35%
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Carbon (C): ≤ 0.08%
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Phosphorus (P): ≤ 0.015%
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Sulphur (S): ≤ 0.015%
Industries and Applications
Inconel 718 is used across high-performance sectors requiring thermal resistance, corrosion protection, and mechanical strength:
Aerospace & Aviation
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Gas turbine engine components (rotors, stators, disks, blades)
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Jet propulsion systems, rocket motors
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Combustion chambers and exhaust components
Petrochemical & Chemical Industry
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High-pressure pipelines and refinery tanks
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Distillation and gas production units
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Equipment exposed to acidic and high-temperature conditions
Energy Sector
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Gas and steam turbine components
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Heat exchangers and boiler systems
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Nuclear reactor parts exposed to radiation and pressure
High-Performance Engine Manufacturing
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Jet engine parts and combustion system components
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Automotive or hybrid powertrain systems under thermal and mechanical stress
Why Choose Inconel 718?
Inconel 718 is the benchmark alloy for applications demanding exceptional resistance to heat, corrosion, and wear. Widely used in aerospace, energy, petrochemical, and engine manufacturing sectors, it guarantees reliability and premium performance in the most challenging environments.
Heat and Corrosion Resistance
Performs in both high-temperature and corrosive environments—ideal for industrial gases and marine exposure.
Long-Term Stability
Maintains mechanical properties over time, maximising component life and reducing downtime.
Excellent Mechanical Properties
Exceptional durability under extreme loads and temperatures makes it a preferred material for mission-critical parts.
Excellent Weldability & Formability
Easy to shape and assemble into complex geometries, while maintaining optimal performance post heat treatment.
Our Commitments
At MetalXplore, we supply high-grade Inconel 718, compliant with international standards. Our expert team is here to help you identify the right metallurgical solution for your most demanding applications.
Superior Quality
All materials are inspected and certified for optimal performance.
Tailored Service
Tailored solutions based on your specific technical and industrial requirements.
Responsiveness
Optimised lead times to keep your operations on schedule.
Interested in Inconel 718?
For more information or to request a custom quote, contact our team today. We’re here to offer technical advice and the best alloy solution for your project.
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