Comparison of Inconel 718 round bars with stainless steel bars and titanium bars
Comparison of Inconel 718 round bars with stainless steel bars and titanium bars
Inconel 718, stainless steel, and titanium bars each have their own characteristics and are suitable for different applications. Inconel 718 performs exceptionally well in extreme high-temperature and corrosive environments, while titanium bars offer a very high strength-to-weight ratio, making them ideal for weight-sensitive designs. For general industrial applications with moderate temperature and corrosion requirements, stainless steel is a more cost-effective option.
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.
What is Inconel 718?
Inconel 718 is a precipitation-hardening nickel-chromium alloy renowned for its superior mechanical properties and resistance to extreme environments. Inconel round bars are specifically developed to withstand high-temperature and corrosive environments and are widely used in the aerospace, power generation, and marine industries. The alloy's unique composition includes significant amounts of nickel, chromium, molybdenum, and niobium, which endow it with high strength and oxidation resistance.
Advantages of Inconel 718 round bars:
Excellent oxidation and corrosion resistance
High tensile strength, yield strength, and creep rupture strength
Excellent performance at high temperatures (up to 704°C or 1300°F)
Good weldability and machinability
Strong resistance to fatigue and stress corrosion cracking
Comparison with Stainless Steel Bars
Composition and Strength
Stainless steel is an iron alloy containing chromium and small amounts of nickel, molybdenum, and other elements. Inconel 718 round bars are a nickel-based alloy, while stainless steel's corrosion resistance comes from its chromium content. Therefore, Inconel 718 round bars are stronger and have better heat resistance than stainless steel.
Corrosion Resistance
Both materials have good corrosion resistance, but Inconel 718 performs better in extreme environments, such as acidic and high-temperature environments. Stainless steel corrodes in high-salt or oxidizing environments, while Inconel 718 remains stable.
Temperature Resistance
Stainless steel loses strength at high temperatures (above 1000°F or 538°C), while Inconel 718 round bars retain their shape at temperatures exceeding 1300°F (704°C). This makes Inconel round bars more suitable for aerospace and high-temperature applications.
Comparison with Titanium Bars
Composition and Strength
Titanium is a low-density metal known for its extremely high strength-to-weight ratio. While titanium bars are durable, Inconel 718 round bars offer greater mechanical strength and hardness, especially in high-temperature applications.
Corrosion Resistance
Titanium bars exhibit excellent corrosion resistance, particularly in seawater and chlorine-rich environments. However, Inconel 718 performs better under extreme high-temperature and oxidizing conditions.
Temperature Resistance
Titanium bars can withstand high temperatures, but their strength is not as high as that of Inconel round bars at extreme temperatures. Inconel 718 maintains its mechanical properties and structural integrity at even higher temperatures, making it ideal for aerospace and power generation applications.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
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.
