Rene 41(UNS N07041) vs. Inconel 718 (UNS N07718) : What are the differences?
Both Rene 41 (UNS N07041) and Inconel 718 are nickel-based superalloys, but their main difference lies in their high-temperature performance: Rene 41 retains strength up to 980°C (1800°F for short-duration service), with a continuous operating range of 815–870°C (1500–1600°F). Inconel 718 softens more rapidly and has a recommended maximum continuous service limit of ~700°C (1300°F). This leads to different applications; Rene 41 is more suitable for hot-end engine components, while Inconel 718 has a wider range of uses due to its greater cost-effectiveness, good weldability, and stronger resistance to stress corrosion cracking.
What is Rene 41 (UNS N07041)?
Rene 41(UNS N07041) is a nickel-based superalloy with high-temperature strength and good oxidation resistance. It is mainly used in jet engine components, such as afterburners and fasteners. Its composition includes nickel (balance), chromium, cobalt, molybdenum, titanium, and aluminum, which give it excellent high-temperature performance.
Overview of Rene 41 and Inconel 718
Rene 41 and Inconel 718 are both precipitation-hardening nickel-based superalloys, renowned for their exceptional strength. Rene 41 is typically used in extremely high-temperature environments, while Inconel 718 combines excellent strength with better machinability.
| Alloy | Main Features |
| Rene 41 | Superior high-temperature strength; excellent stress-rupture resistance |
| Inconel 718 | High strength + superior workability; widely used industrially |
Comparison of Chemical Compositions
Chemical composition directly affects the alloy's performance, temperature resistance, and cost. Rene 41 contains more cobalt and chromium, thus exhibiting higher high-temperature strength. Inconel 718 contains a large amount of niobium, thereby improving its age-hardening properties and formability.
| Element | Rene 41 (Approx.) | Inconel 718 (Approx.) |
| Nickel | 50–55% | 50–55% |
| Chromium | 18–20% | 17–21% |
| Molybdenum | 9–10% | 2.8–3.3% |
| Niobium | - | 4.75–5.5% |
| Cobalt | 10–12% | - |
| Titanium + Aluminum | 3–4% | ~1–2% |
Temperature Capability
| Alloy | Recommended Max Service Temp |
|---|---|
| Rene 41(UNS N07041) | 815–870°C (1500–1600°F) continuous; peak short-duration capability up to ~980°C (1800°F) |
| Inconel 718 | Up to ~700°C (1300°F) continuous |
Mechanical Strength Differences
| Temperature | Rene 41 Strength | Inconel 718 Strength |
| Room Temp | Very High | Very High |
| 700°C | High | Moderate |
| 900°C | Moderate–High | Low |
Applications Comparison
| Alloy | Main Applications |
|---|---|
| Rene 41(UNS N07041) | Jet engine hot-section parts, afterburner components, nozzles, seals and high-stress bolting |
| Inconel 718 | Fasteners, cryogenic parts, turbine discs, aerospace structural parts, oil & gas components |
Machinability Comparison
| Alloy | Machinability Rating |
| Rene 41(UNS N07041) | Very Low (hard to machine) |
| Inconel 718 | Moderate (easier compared with most superalloys) |
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.
FAQ：
What is Inconel 718 used for?
Inconel 718 is a high-strength, nickel-based superalloy used in extreme environments. It handles high heat up to 1300°F (700°C) and heavy stress. It is common in aerospace, oil and gas, and power generation for parts like jet engine turbine disks, rocket motors, fasteners, and downhole shafts.
What are the different types of Inconel alloys?
Inconel is a family of nickel-based superalloys known for high strength, high-temperature stability, and corrosion resistance. Common grades include Inconel 600 (basic high-temp oxidation resistance), 601 (cyclic thermal service), 625 (superior marine/chemical corrosion), and 718 (precipitation-hardened high strength).
Why is Inconel 718 so expensive?
Inconel 718 is expensive because it is a nickel-based superalloy composed of over 50% nickel plus costly alloying elements like niobium and molybdenum. It requires precise, complex manufacturing, rigorous aerospace-grade testing, and is notoriously difficult to machine, leading to very high fabrication and tool wear costs.
Is alloy 718 the same as Inconel 718?
Yes, Alloy 718 and Inconel 718 are the exact same material. "Inconel" is a registered trademark name owned by Special Metals Corporation, while "Alloy 718" is the generic or unified industry designation (also designated as UNS N07718) used when referring to this specific nickel-chromium superalloy.
Is 718 Inconel stronger than titanium?
Yes, Inconel 718 is generally stronger than common titanium alloys (such as Grade 5 / Ti-6Al-4V) at room temperature and vastly superior in high-temperature environments. Inconel 718 has an ultimate tensile strength of around 205 ksi (1413 MPa), whereas Grade 5 titanium sits around 130–148 ksi (895–1020 MPa).
