Inconel 713C vs. 718 – A Comparison of Two Alloys
Inconel 713C vs. 718 – A Comparison of Two Alloys
Both Inconel 713C and 718 are nickel-based alloys, but their main advantages differ: 713C offers excellent high-temperature oxidation resistance, making it suitable for applications requiring durability at high temperatures; while 718 exhibits superior creep resistance at lower temperatures, excellent corrosion resistance under harsh conditions, and better weldability. Inconel 718 is generally more versatile, but if high-temperature oxidation resistance is the primary consideration, 713C is the better choice.
What is the heat treatment process for Inconel 738?
Inconel 738 alloy achieves its optimal combination of mechanical properties after the following heat treatment: 2050°F/2 hours/air cooling + 1550°F/24 hours/air cooling. Unless otherwise stated, all performance data in this manual are based on material treated with this method.
Inconel 713C
Inconel 713C is a nickel-chromium-molybdenum alloy suitable for extreme temperatures (up to 1500°F/816°C). Due to its high chromium, molybdenum, and aluminum content, it exhibits higher strength than other nickel-based superalloys, thus improving oxidation resistance and thermal stability. Therefore, it is an ideal material for applications such as gas turbine blades, exhaust nozzles, and rocket engines.
Inconel 718
Inconel 718 is a nickel-chromium-molybdenum alloy primarily used in low-temperature environments. Due to its high chromium, aluminum, niobium, titanium, and molybdenum content, it possesses excellent creep resistance. Therefore, it is an ideal material for applications such as turbocharger rotors, fasteners, turbine impellers, and bolts.
Differences between Inconel 713C and 718
The main difference between these two alloys lies in their primary applications: Inconel 713C is better suited for high-temperature environments, while Inconel 718 performs better at low temperatures. Both alloys exhibit excellent corrosion resistance, but due to its higher chromium content, Inconel 713C may have slightly better corrosion resistance than Inconel 718. Furthermore, due to its lower carbon content, Inconel 718 generally has better machinability than Inconel 713C.
Inconel 713C is a precipitation-hardening nickel-chromium alloy.
Inconel 718 is an age-hardening nickel-chromium alloy.
At high temperatures, Inconel 713C exhibits superior mechanical properties compared to Inconel 718.
Inconel 713C offers better corrosion resistance than Inconel 718.
The Inconel 713C is priced higher than the Inconel 718.
| Feature | Inconel 783 | Inconel 718 |
|---|---|---|
| Thermal Expansion | Lower (approximately 20% lower than 718) | Higher (13 μm/m·°C between 20-100°C) |
| Oxidation Resistance | Higher, especially at elevated temperatures | Good, but 783 is superior in this regard |
| Density | Lower (7.81 g/cm³) | Higher (8.19 g/cm³) |
| Primary Application | Gas turbine engines and other high-temperature applications | Broad use in aerospace, turbines, and other high-strength applications |
| Strength | Enhanced by precipitation hardening (niobium and aluminum) | High strength from precipitation hardening (niobium, titanium, aluminum) |
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.
