Inconel 718 |UNS N07718|2.4668 Seamless Pipe
Distinguished by its precipitation-hardening capabilities, our Inconel 718 tubing offers superior resistance to creep-rupture and high tensile strength at temperatures ranging from cryogenic levels up to 704°C (1300°F). This makes them indispensable for mission-critical applications in aerospace engines, high-strength fasteners, and downhole oil & gas tools. Through advanced cold-drawing and precise vacuum heat treatment, Tengqi ensures every pipe maintains optimal microstructure and excellent weldability without post-weld cracking, even in aggressive corrosive media.
"Our Inconel 718 pipes offer exceptional resistance to chloride and sulfide stress corrosion cracking, meeting NACE MR0175 standards."
SeamlessInconel 718 Pipe (Inconel718 / UNS N07718 / W.Nr. 2.4668) is a precipitation-hardenable Ni-Cr alloy achieving very high strength up to 700 °C. Manufactured by Tengqi in Fujian, China, every heat is fully traceable, hydro-tested and available with third-party inspection (SGS / BV / TUV) on request.
Product Specifications
- ASTM B161 / B163 — Seamless Tube & Pipe
- ASTM B165 / B167 — Seamless Pipe
- ASTM B407 / B423 — Seamless Pipe & Tube
- ASTM B622 — Seamless Pipe & Tube
- ASTM B829 — General Requirements
- Finishing: solution annealed, age hardened; pickled & polished on request
Size Range
| Outside Diameter (OD) | Wall Thickness | Length |
|---|---|---|
| 6 mm – 1016 mm (1/4"– 40") | 0.5 mm – 65 mm | 6 m / 12 m, or as required |
Chemical Composition
Inconel718 (UNS N07718) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | Ti | Nb | Al | Fe | B |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N07718 | ≤ 0.08 | ≤ 0.35 | ≤ 0.015 | ≤ 0.015 | ≤ 0.35 | 17.0 – 21.0 | 50.0 – 55.0 | 2.80 – 3.30 | ≤ 0.30 | 0.65 – 1.15 | 4.75 – 5.50 | 0.20 – 0.80 | balance | ≤ 0.006 |
Mechanical Properties
| Property | Value |
|---|---|
| Delivery Condition | Solution annealed + age hardened (precipitation hardened) |
| Tensile Strength | ≥ 1240 MPa |
| Yield Strength (0.2% offset) | ≥ 1035 MPa |
| Elongation in 2 in. / 50 mm | ≥ 12% |
| Hardness | ≥ 36 HRC |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.19 g/cm3 |
| Thermal Conductivity | 11.4 W/m·K |
| Specific Heat Capacity | 435 J/kg·K |
| Elastic Modulus | 200 GPa |
| Magnetic Properties | Practically non-magnetic |
Industry Applications
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CONTACT US
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