
Inconel 718 Pipe Supplier for High-Temperature & High-Pressure Service
Most engineers don't pick a nickel alloy just for its anti-corrosion properties. The real test is whether it can hold up under prolonged heat and extreme pressure without getting brittle. That's exactly why Inconel 718 is such a workhorse in demanding industries. As a precipitation-hardening grade, it gives you exceptional strength paired with oxidation resistance, keeping its integrity up to about 700°C. Whether it's a turbine blade, a deep-sea manifold, or a high-pressure energy system, this pipe is the go-to solution when standard 316 or 304 just isn't going to cut it.
Product Specifications
| Item |
|
| Product | Inconel 718 Pipe |
| UNS | N07718 |
| Standard | ASTM B163, ASTM B167, ASTM B444, ASTM B829 |
| Outside Diameter | 6–610 mm |
| Wall Thickness | 0.8–40 mm |
| Length | 5.8 m, 6 m or Customized |
| Manufacturing | Seamless / Welded |
| Surface Finish | Annealed, Pickled, Bright |
| Processing Service | Cutting, Beveling, Machining, Custom Length |
| Trade Terms | FOB, CFR, CIF, EXW |
| Property | Typical Value |
| Nickel (Ni) | 50.0–55.0% |
| Chromium (Cr) | 17.0–21.0% |
| Iron (Fe) | Balance |
| Niobium + Tantalum | 4.75–5.50% |
| Molybdenum (Mo) | 2.80–3.30% |
| Tensile Strength | ≥965 MPa |
| Yield Strength | ≥550 MPa |
| Elongation | ≥30% |
What Makes Inconel 718 Pipe Different?
-
Maintains Strength at Elevated Temperature
Unlike many stainless steels that lose strength under prolonged heat, Inconel 718 retains excellent mechanical properties up to approximately 700°C, making it suitable for pressure-bearing components operating under continuous thermal stress.
-
Outstanding Fatigue and Creep Resistance
The precipitation-hardening structure provides excellent resistance to cyclic loading and creep deformation, helping extend service life in turbines, engines and rotating equipment.
-
Excellent Corrosion Performance
The high nickel and chromium content offers reliable resistance to oxidation, chloride-containing environments and many acidic process media, reducing maintenance and replacement costs.
-
Easy to Fabricate into Precision Components
Despite its high strength, Inconel 718 can be supplied as seamless or welded pipe and further processed through cutting, machining and welding to meet project requirements.
Typical Applications
- Aerospace Engine Components
- Gas Turbine Systems
- Oil & Gas Downhole Equipment
- Heat Exchangers
- High-Pressure Process Pipelines
- Nuclear Power Equipment
- Chemical Processing Plants

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