Inconel 713C vs. Inconel 718: A Comparison Guide to High-Performance Alloys
Inconel 713C vs. Inconel 718: A Comparison Guide to High-Performance Alloys
Both Inconel 713C and Inconel 718 are high-performance nickel-chromium-molybdenum alloys, but they are suitable for different industrial environments depending on temperature, strength, and processing requirements. Inconel 713C is a cast alloy designed for extremely high resistance to high-temperature creep; while Inconel 718 is an age-hardening alloy known for its versatility, high strength at moderate temperatures, and excellent weldability.
What are the characteristics of Inconel 713C?
Inconel 713C exhibits extremely high corrosion resistance. Upon heating, a thick, stable oxide layer forms on the surface, providing protection. This material maintains its strength over a wide temperature range. This metal alloy is particularly suitable for applications with temperatures up to 900°C.
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.
Comparison of Chemical Composition (%) of Inconel 713C vs. Inconel 718
| Element |
Inconel 713C (UNS N07713) |
Inconel 718 (UNS N07718) |
| Nickel (Ni) |
Balance (approx. 70% - 75%) |
50.0 - 55.0% |
| Chromium (Cr) |
12.0 - 14.0% |
17.0 - 21.0% |
| Iron (Fe) |
≤ 2.5% (Very Low) |
17.0% - Balance |
| Niobium (Nb) |
2.0 - 2.8% |
4.75 - 5.5% |
| Aluminum (Al) |
5.5 - 6.5% (Very High) |
0.20 - 0.80% |
| Titanium (Ti) |
0.5 - 1.0% |
0.65 - 1.15% |
| Molybdenum (Mo) |
3.8 - 5.2% |
2.8 - 3.3% |
| Carbon (C) |
0.08 - 0.20% |
≤ 0.08% |
Key Differences: Inconel 713C (Casting) vs Inconel 718 (Wrought)
The fundamental difference lies in their form: Inconel 713C is primarily a precipitation-hardening cast alloy, while Inconel 718 is a versatile forging alloy available in plates, bars, and forgings.
| Feature |
Inconel 718 (UNS N07718) |
Inconel 713C (UNS N07713) |
| Material Form |
Wrought (Plate, Bar, Pipe, Forging) |
Investment Casting Only |
| Main Composition |
Ni-Cr-Fe-Nb-Mo |
Ni-Cr-Al-Mo-Nb |
| Max Temperature |
Up to 700°C (1290°F) |
Up to 980°C (1800°F) |
| Weldability |
Excellent (Resistant to strain-age cracking) |
Poor (Difficult to weld without cracking) |
| Machinability |
Good (with specialized tools) |
Difficult (requires precision casting) |
Inconel 718 Alloy: Industry Mainstay
Inconel 718 is the most widely used high-temperature alloy, thanks to its excellent weldability and high strength at high temperatures.
Advantages: High tensile strength, fatigue strength, and creep rupture strength. It has excellent resistance to post-weld cracking.
Core Applications: Cryogenic storage tanks, gas turbines, and high-strength bolts for offshore drilling.
Inconel 713C Cast Alloy: Suitable for Extreme High-Temperature Environments
Inconel 713C is ideal when your application temperature exceeds 800°C.
Advantages: Excellent creep resistance and outstanding oxidation resistance at temperatures up to 980°C.
Unique Features: High aluminum (Al) content gives it extremely high thermal stability.
Core applications: gas turbine blades for jet engines, turbocharger impellers, and high-temperature cast components.
GNEE Product Forms: We supply Inconel 718 plates, inconel 718 pipe, Alloy 718 round bars, and Uns N07718 fasteners according to ASTM B670 and AMS 5596 standards.
Uns N07718 Alloy Fasteners
Comparison of Inconel 713C and other popular nickel-based alloy grades
| Property / Grade |
Inconel 713C |
Inconel 601 |
Hastelloy C276 |
Monel 400 |
GH3030 |
| Main Composition |
Ni-13Cr-6Al-2Mo-Nb |
Ni-23Cr-1.4Al (High Cr) |
Ni-16Mo-15Cr-4W |
Ni-30Cu (Nickel-Copper Alloy) |
Ni-20Cr-Ti (Simple Solid Solution) |
| Forms Available |
Precision casting only (not forgeable) |
Forgings / Plate / Tube / Bar |
Forgings / Plate / Tube / Bar |
Forgings / Plate / Bar |
Forgings / Plate / Tube / Wire / Strip |
| Core Advantages |
Extremely high high-temperature creep strength, excellent thermal fatigue resistance |
Superior high-temperature oxidation and carburization resistance |
The "all-rounder": excellent resistance to acids, alkalis, and complex corrosive media |
Outstanding seawater and hydrofluoric acid resistance, high toughness |
Good thermal strength, high plasticity, easy to weld |
| Maximum Service Temperature |
Up to 980°C (maintains high strength) |
~1250°C (oxidation resistance) |
~400°C (corrosion-focused) |
~450°C (corrosion-focused) |
~800°C (higher for short periods) |
| Corrosion Resistance Features |
Average (focuses on high-temperature strength) |
Excellent (high-temperature gas corrosion) |
Very High (resists pitting, crevice corrosion, and chlorides) |
Excellent (resists saltwater, sulfuric acid, and reducing acids) |
Good (resists atmospheric oxidation) |
| Typical Applications |
Turbocharger impellers, gas turbine blades |
Heat treatment furnace components, chemical oxygen heaters |
Pharmaceutical equipment, Flue Gas Desulfurization (FGD), chemical reactors |
Marine engineering, heat exchangers, pump shafts/valves |
Aero-engine combustion chambers, afterburner components |
📦 Gnee Steel Professional Packaging, Fast Shipping
We use professional B2B export packaging to ensure your high-value alloy products arrive intact:
Protective Layer: Rust-preventive oil coating + plastic film wrapping.
Reinforcement Layer: Sturdy and durable sea-ready wooden crates (IPPC treated) or steel strapping.
Logistics: Worldwide sea freight (FCL/LCL), air freight (for urgent samples), and door-to-door express service (DHL/FedEx).
Gnee Steel: Professional Nickel-Based Alloy Packaging
Why Choose GNEE Steel Group?
GNEE (Super Stainless Steel Alloys) is a leading global supplier of Inconel alloys with over 18 years of export experience. We are committed to striking a balance between high-end manufacturing and highly competitive pricing.
Large Inventory: We maintain a 5,000-ton inventory of nickel-based alloys, ensuring rapid delivery of standard-sized products within 7 days.
Advanced Equipment: Equipped with vacuum induction melting (VIM) and electroslag remelting (ESR) furnaces, ensuring ultra-high purity material quality.
Quality Certification: All products are ISO 9001:2015 certified and come with a Factory Test Report (MTR), including chemical composition analysis and mechanical property testing.
Customized Solutions: Whether you need 1mm thick Inconel 718 plates or custom-forged 718 bars, GNEE can provide tailor-made sizes.
35000+
Square Meters Built
200+
Enterprise Employees
Contact us for the latest export price quote for Inconel 718 metal
FAQ
Q: Can I use Inconel 713C instead of Inconel 718 in welding applications?
A: No. Inconel 713C is prone to cracking during welding. If your project requires a large amount of welding, Inconel 718 is recommended.
Q: Which alloy is more cost-effective?
A: Inconel 718 is generally readily available and widely used, making it more cost-effective for most structural components. 713C is designed for castings with complex shapes.
Q: Does GNEE offer third-party inspection services?
A: Yes! We support inspections by third-party inspection agencies such as SGS, TUV, or BV to ensure products meet your technical specifications.
Q: What are the disadvantages of Inconel 718?
A: Disadvantages and Alternatives of Inconel 718
While Inconel 718 boasts excellent mechanical properties and corrosion resistance, it also has some drawbacks: Cost: Due to its complex manufacturing process, Inconel 718 is expensive. Machining Difficulty: Its high hardness makes material removal difficult and accelerates tool wear.
Q: Why is Inconel 718 difficult to machine?
A: Inconel 718 nickel-based superalloys exhibit excellent performance at high temperatures, thus finding wide application in the aerospace, marine, and automotive industries. However, Inconel 718's poor thermal conductivity and rapid strain hardening characteristics result in poor machinability and poor surface finish.
Q: What is the melting point of Inconel 718?
A: The melting point range of Inconel 718 is 1260-1340°C (2300-2440°F).
