High Temp Superalloy Aerospace Inconel 718 Round Bar UNS N07718 Nickel Alloy

UNS N07718 is a precipitation-hardenable nickel-chromium alloy containing significant amounts of iron, niobium, and molybdenum, along with minor additions of aluminum and titanium. Developed in the 1960s for jet engines and gas turbines, this superalloy has become the standard material across aviation, energy, space, and offshore industries.

The alloy combines corrosion resistance with high strength and outstanding weldability, including resistance to post-weld cracking. UNS N07718 maintains exceptional mechanical properties from -250°C to 700°C, making it the preferred choice for demanding high-temperature applications.

We supply Inconel 718 in all standard mill forms, cut to size, with full traceability to AMS, ASTM, and ASME standards. Custom dimensions and special heat treatments are available upon request.

1. Certified Quality: Every shipment includes full traceability and an EN 10204 Type 3.1 Mill Test Certificate (MTC) – available with AMS, ASTM, or ASME compliance.

2. Extensive Inventory: Large stock of bars (round & flat), sheet, plate, and pipe in a range of sizes for immediate dispatch.

3. Precision Processing: In-house cutting (shear, plasma, waterjet, cold saw) and machining (turning, milling) to your exact dimensions.

4. Technical Expertise: Our metallurgists can assist with heat treatment specifications (solution annealed, aged, or double-aged) and material selection.

5. Competitive Pricing: Direct mill access offers cost-effective solutions for both prototypes and production volumes.

6. Global Logistics: Expert export packaging ensures safe, delivered-duty-paid (DDP) service worldwide.

Q: What is the difference between Inconel 625 and Inconel 718?
A: Inconel 625 is solid-solution strengthened – high strength as-welded, excellent corrosion resistance, but lower high-temperature strength than 718. Inconel 718 is precipitation-hardened – significantly higher yield and creep strength up to 1300°F (700°C), but requires aging heat treatment. For aerospace rotating parts and high-temperature fasteners, choose 718. For seawater and chemical processing, choose 625.

Q: Can Inconel 718 be welded in the aged condition?
A: Typically, 718 is welded in the solution annealed condition (Condition A) and then aged after welding to restore full strength. However, it can also be welded in the aged condition with proper procedures (specifically for repair). Contact us for weld procedure development support.

Q: What heat treatment conditions are available?
A: We supply:

• Solution Annealed (Condition A): Ready for fabrication.

• Solution Annealed + Aged (Condition B): Fully precipitation-hardened, maximum strength.

• Solution Annealed + Double Aged: Optimized for certain stress-rupture requirements (per AMS 5663/5664).

Q: Do you provide third-party inspection?
A: Yes. We can arrange SGS, TÜV, BV, or Lloyd's inspection at the buyer's cost, including witness testing and dimension checks.

Q: What is the maximum temperature for continuous service?
A: For load-bearing applications, continuous service to 1300°F (700°C). For intermittent service, excursions to 1400°F (760°C) are

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