Inconel 718 Flange (UNS N07718 / W.Nr. 2.4668)
High-strength corrosion-resistant alloy Flange for oil & gas and aerospace industry
As a leading Chinese supplier of Inconel pipe fittings, SEATHER manufactures a full range of high-quality Inconel 718 flanges designed for reliable performance in extreme service environments.
INCONEL® alloy 718 (UNS N07718 / W.Nr. 2.4668) is a precipitation-hardenable nickel-chromium alloy known for its exceptional strength, outstanding corrosion resistance, and excellent fabricability. It maintains stable mechanical properties from -423°F to 1300°F, and its superior welding characteristics—especially its resistance to post-weld cracking—make it ideal for demanding industrial applications.
Flanges are essential components used to connect pipe sections, equipment, or valves. The Inconel 718 flanges produced by SEATHER are precision-manufactured to match seamlessly with all types of Inconel 718 pipes, ensuring secure, stable, and leak-free connections. If you are already sourcing our Inconel 718 pipes, pairing them with our Inconel 718 flanges ensures optimal compatibility and performance.
With excellent high-temperature capability and corrosion resistance, Inconel 718 flanges are widely used in aerospace, petrochemical, marine engineering, power generation, and other harsh operating environments.
To meet different installation and design requirements, we supply a full range of flange types, including:
- Threaded flange
- Slip-on welding flange
- Blind flange
- Socket welding flange
- Lapped flange
- Welding neck flange
We can also customize sizes, pressure ratings, and surface finishes according to your project needs.
Inconel 718 Flange (UNS N07718) Specifications & Srtandard
- NPS: 1/2 ~ 48″
- SCH: 5 ~ XXS
- Classification: TH (Threaded) flange, SO (Slip-On Welding) flange, BL (Blind) flange, SW (Socket Welding) flange, LJ (Lapped) flange, WN (Welding Neck) flange
- Customized size needs to be confirmed with our team
- Pressure Level: 150 – 2500lbs
- Grades: 718 / UNS N07718 / W.Nr. 2.4668
- Standards: ASTM B462
ASME B16.5
MSS SP-25 - Brand: SEATHER TECHNOLOGY, Special Metals(SMC), HAYNES International, VDM Metals, ATI, etc.
Inconel 718 Flange (UNS N07718) Applications & Usages
- Aerospace
- Automotive
- Marine
- Chemical Processing
- Power Generation
- Nuclear
What is Inconel 718 (UNS N07718)
Inconel 718 is also called UNS N07718 or W.Nr. 2.4668. It is a nickel-chromium-iron-niobium precipitation-strengthened alloy. It can obtain excellent high-temperature strength through heat treatment. Inconel 718 has good corrosion resistance. Its strength makes it stand out among many alloys. Its other properties at high temperatures are also excellent. Inconel 718 alloy is available in customized part, seamless and welded pipe, coil sheet, and bar forms. Below pictures show its chemical composition and standard. Inconel 718 alloy is widely used in aerospace, automotive, oil and gas, marine and other industries. If you need more information and solutions, please kindly visit our website or talk to our experts directly. Seather Technology is your trusted supplier for high-performance alloys. We deliver not only premium-quality materials but also expert technical consultation and global supply chain services.
Inconel 718 Flange (UNS N07718) Chemical Composition
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Ti |
| 718 | ASTM | ≤0.08 | ≤0.35 | ≤0.35 | ≤0.015 | ≤0.015 | 17.00-21.00 | 50.0-55.0 | 0.65-1.15 |
Inconel 718 Flange (UNS N07718) Mechanical Properties
| Element | Yield Strength (0.2%Offset) | Melting Point | Density | Tensile Strength | Elongation |
| 718 | MPa – 1034 | 1336 °C (2437 °F) | 8.19 g/cm3 | MPa – 1241 | Min 10 % |
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Sheet Metal Fabrication
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Metal Welding Service
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More Information About Inconel 718 Flange (UNS N07718)
When you choose to buy Inconel 718 Flange (UNS N07718), there have some important points we need to know before we get started.
Pitting resistance equivalency numbers (PREN) for Inconel 718 Flange (UNS N07718)
Inconel 718 PREN: 29
The pitting resistance equivalency number uses the alloy’s chemical makeup to guess its power against pitting corrosion. You check how much chromium, molybdenum, tungsten, and nitrogen are in the alloy. These elements help keep the steel safe. The most used formula is:
PREN = CR% + 3.3 x (MO% + 0.5 x W%) + 16 x N%How to Purchase Inconel 718 Flange (UNS N07718)
When purchasing alloy flanges, it’s essential to have the right materials and information to ensure a smooth procurement process and to get the products that meet your project needs.
Here’s what you need to provide:
1. Material: Specify the flange material, such as nickel alloy 718. You can refer to standards such as ASTM and ASME.
2. Type: Determine the type of flange needed, such as butt welding flange, threaded flange, slip-on flange, blind flange, etc.
3. Size: Specify the flange’s nominal diameter (DN) and pressure rating (PN).
4. Quantity: Provide the exact number of flanges required for an accurate quotation.
5. Technical specifications: Include technical specifications and drawings. If there are unique design requirements, detailed drawings can be attached.
6. Quality standards: Specify quality standards and inspection requirements, such as the need for third-party inspection, material certification, and inspection reports.
7. Special requirements: Specify any special surface treatment, coating, corrosion resistance requirements, etc.
8. Packaging requirements: If there are specific packaging needs, such as protective or anti-corrosion packaging, please specify.
9. Delivery time: Specify the expected delivery time and location.
By preparing the above information, you can streamline the process of purchasing flanges and ensure that you receive high-quality products that meet your requirements.
Conclusion
We have introduced our products briefly. If you want to know more about it, you can check the article here Inconel Alloy 718: Composition, Properties and Applications.
If you need to purchase alloy products, please get in touch with us immediately.
Related resources：
https://en.wikipedia.org/wiki/Inconel_718
Trademark Notices:
Inconel®, Incoloy®, and Monel® are registered trademarks of Special Metals Corporation.
Hastelloy® is a registered trademark name of Haynes International, Inc.
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