Inconel 718 vs Titanium – What's the Difference?
Inconel 718 is a nickel-chromium alloy known for its exceptional strength and oxidation resistance at extremely high temperatures; while titanium is a much lighter metal that maintains high strength at room temperature and has excellent corrosion resistance. The main difference is that Inconel is better suited for extreme high-temperature applications, while titanium is better suited for applications where weight is a priority and temperatures are moderate.
Is Inconel 718 stronger than titanium alloys?
Inconel 718 has a tensile strength of 1,375 MPa, while Ti-6Al-4V titanium alloy (the strongest type) has a tensile strength of approximately 1,170 MPa. While this is lower than the strongest Inconel alloy, a broader range of properties may need to be considered when selecting materials.
Material Comparison: Inconel 718 vs. Titanium
| Feature | Inconel 718 | Titanium |
|---|---|---|
| Tensile Strength | >1000 MPa | ~827 MPa |
| Yield Strength | 414 MPa | ~827 MPa |
| High-Temp Performance | Up to 704°C | Up to ~600°C |
| Corrosion Resistance | Excels in high-temperature & chlorinated environments | Suited for marine & biological settings |
| Durability & Toughness | Superior impact resistance from a tough microstructure | Good energy absorption aided by high ductility |
Comparison of Inconel 718 and Titanium
Inconel 718 vs. Titanium – 1. Composition:
Inconel 718, also known as UNS N07718, is a nickel-chromium superalloy developed in the 1960s. It is primarily composed of nickel, with significant additions of chromium, iron, and other elements such as molybdenum, titanium, aluminum, and cobalt to enhance its mechanical properties. This complex composition gives Inconel 718 excellent strength, corrosion resistance, and high-temperature performance.
On the other hand, titanium is a transition metal with a unique combination of properties. It is strong, lightweight, and highly corrosion-resistant. Commercially pure titanium grades, such as Grade 2 and Grade 5 titanium, are pure titanium with small amounts of other elements added to improve specific properties. Titanium alloys, such as Ti-6Al-4V, further enhance these properties by adding aluminum and vanadium.
Inconel 718 and Titanium – 2. Properties:
Inconel 718 possesses high strength and toughness, maintaining excellent performance even at high temperatures, making it suitable for high-stress and high-temperature applications. Its corrosion resistance, especially oxidation resistance, is outstanding, making it suitable for corrosive environments. Furthermore, its excellent creep and fatigue resistance at high temperatures makes it ideal for components requiring long-term high-temperature performance.
On the other hand, titanium is known for its lightweight properties, making it ideal for applications with extremely low weight requirements. Its corrosion resistance, especially in saltwater and other harsh environments, is excellent. Titanium alloys, such as Ti-6Al-4V, combine strength, ductility, and toughness, making them suitable for a wide range of applications.
Inconel 718 and Titanium – 3. Applications:
Inconel 718's unique combination of properties makes it the material of choice for high-performance applications in the aerospace, gas turbine, and chemical industries. It is commonly used in components requiring superior strength and corrosion resistance, such as turbine disks, engine mounts, and fasteners.
Titanium and its alloys are widely used in the aerospace, medical, chemical, and marine industries due to their lightweight, corrosion resistance, and biocompatibility. Titanium implants in dental and orthopedic surgery are common examples of their application in the medical field. In the aerospace industry, titanium is used in aircraft frames, engine components, and landing gear due to its high strength-to-weight ratio.
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of Inconel alloy tubes/bars/plates/fittings/coils, fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), chemical composition certificate, and mechanical property certificate.
✅ Value-added services: slitting, cutting, polishing, surface treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export-required documents.
Email: ss@gneemetal.com
Gnee Steel is a supplier of Inconel 718 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with Inconel 718 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells Inconel 718, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
