Alloy 718 Pipe
We are a Chinese B2B supplier of Alloy 718 pipe.Our products meet multiple standards and have passed rigorous testing.Kaysuns possesses over 10 years of experience in exporting stainless steel pipes and fittings.
Alloy 718 pipe (UNS N07718) is a high-strength,precipitation-hardening nickel-chromium-iron superalloy engineered for extreme environments.It delivers exceptional tensile strength,creep rupture resistance,and corrosion resistance at temperatures up to 1300°F (704°C).Due to its excellent weldability without post-weld hardening,this material is widely used in aerospace,oil and gas,and petrochemical industries.
Alloy 718 Pipe is a precipitation-hardening alloy exhibiting outstanding tensile strength and creep rupture strength.Unlike other high-temperature alloys,it resists strain-age cracking during welding,facilitating machinability.It exhibits outstanding corrosion and oxidation resistance in harsh environments,including cryogenic conditions.The effective temperature range spans from cryogenic temperatures to 1300°F (704°C),making it suitable for high-strength applications.This material is non-magnetic.
- ASTM B163 / ASME SB163
- ASTM B516 / ASME SB516
- AMS 5589 / AMS 5590
- NACE MR0175 / ISO 15156
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We are a professional supplier of Inconel alloy 718 pipes and fittings, you are welcome to contact us if you have any requirements.
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Alloy 718 Pipe Equivalent Materials
- ASTM B983 (Pipe) / AMS 5589 / 5590 (Tubing)
- UNS N07718
- EN/DIN W.Nr 2.4668
- French AFNOR NC 19 Fe Nb
- GB/T GH4169 / GH169
Chemical Composition of Alloy 718 Pipe (UNS N07718), wt.%
| Element | Ni | Cr | Fe | Nb+Ta | Mo | Ti | Al | Co | C | Mn | Si |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 718 | 50 – 55 | 17 – 21 | ~ 17 – 18.5 | 4.75 – 5.5 | 2.8 – 3.3 | 0.65 – 1.15 | 0.2 – 0.8 | 1 Max | 0.08 Max | 0.35 Max | 0.35 Max |
Mechanical Properties of N07718 Pipe
| Tensile Strength Rm (MPa) | Yield Strength Rp0.2 (MPa) | Elongation A (%) | Hardness (Reference) |
|---|---|---|---|
| 1275 – 1375 MPa (185 – 199 ksi) | 1034 – 1172 MPa (150 – 170 ksi) | 12 – 27 | ≥ 331 HBW |
Delivery condition: Annealed / Solution Annealed
Note:ASTM standards generally do not specify a mandatory hardness limit;hardness is shown for reference only.
Physical Properties of W.Nr. 2.4668
| Density | ≈ 8.19 g/cm³ | 0.296 lb/in³ |
| Melting Range | 2300℉ – 2440℉ | 1260℃ – 1336℃ |
| Specific Heat | 435 J/kg·K | 0.104 Btu/lb·℉ |
| Thermal Conductivity | 11.1 – 11.4 W/m·K | 77 – 79 Btu·in/ft²·h·℉ |
| Electrical Resistivity | 1.21 – 1.32 μΩ·m | 753 Ohm-circ mil/ft |
| Modulus of Elasticity | 199.9 – 200 GPa | 29.0 – 30.0 x 10⁶ psi |
| Thermal Expansion | 13.0 μm/m·K | 7.2 x 10⁻⁶ in/in·℉ |
Application of Alloy 718 Pipe
Oil & Gas Industry
- Downhole Equipment:
Components such as packers,mandrels,tubing hangers,and drilling tools. - Wellhead and Subsea Components:
Wellhead “Christmas trees,” valves,pump shafts,and fittings used in environments exposed to seawater and acidic gases. - Pipeline Systems:
High-pressure pipelines and heat exchangers within petrochemical plants for transporting corrosive and high-temperature media.
Power Generation and Chemical Processing
- Nuclear Reactor:
Utilized for nuclear fuel element spacers and heat exchanger tubes due to its resistance to high temperatures and radiation damage. - Chemical Processing:
Employed in reactors and piping systems handling corrosive substances and high temperatures,benefiting from its exceptional oxidation resistance and corrosion resistance.
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- +86 577 8551 1171
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