Inconel 718 pipe fittings
Choose the Inconel 718 pipe fittings that suit you
Inconel 718 pipe fittings are suitable for high-temperature and corrosive environments. This alloy offers excellent strength and corrosion resistance, along with good weldability. It can be heat-treated to achieve varying tensile strengths and elongations. It is also used in applications requiring superior stress corrosion resistance or higher impact strength, such as nuclear reactors, chemical plants, offshore oil rigs, and aerospace systems. These fittings are ideal for companies seeking reliable solutions to meet demanding production requirements where quality control is paramount.
What are the disadvantages of Inconel 718?
High cost. Due to its high nickel content and complex processing requirements, Inconel 718 is significantly more expensive than standard stainless steel or lower-grade alloys.
Poor machinability.
Special weldability requirements.
High thermal expansion.
Inconel 718 Pipe Fittings Specification
| Standard | ASTM B366 / ASME SB366 |
| Dimensions | ANSI B16.9, B16.25, B16.28, MSS-SP-43, MSS-SP-48, MSS-SP-59 |
| Size | 1/8" NB TO 48" NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Type | Seamless / Welded(100% X-Ray Welded) / Fabricated |
| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
Inconel 718 Pipe Fittings Chemical Properties
| Grade | C | Mn | Si | P | S | Ni | Cr | B | Mo | Co | Al | Ti | Nb | Cu |
| Inconel 718 | 0.08 max | 0.35 max | 0.35 max | 0.015 max | 0.015 max | 50 – 55 | 17 – 21 | 0.006 max | 2.8 – 3.3 | 1.0 max | 0.2 – 0.8 | 0.65 – 1.15 | 4.75 – 5.5 | 0.3 max |
Inconel Alloy 718 Pipe Fittings Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Inconel 718 | 8.2 g/cm3 | 1350 °C (2460 °F) | Psi – 1,35,000, MPa – 930 | Psi – 75,000, MPa – 482 | 45 % |
How to Choose Inconel 718 Pipe Fittings
Fitting Design
Another key factor to consider is the fitting design. This design will determine the fitting's compatibility with your piping system, ease of installation, and ability to withstand stress and vibration. You need to ensure you choose the correct fitting design to complement your piping system installation and promote smooth system operation.
Dimensions
Dimensions are crucial when selecting these fittings, as they determine their compatibility with the piping system. Therefore, you must select fittings that match the dimensions of your piping system (such as diameter, length, and thickness). Furthermore, the fittings should have the precise angles, curves, and shapes required by the system.
Corrosion and Stress Resistance
Corrosion and stress resistance are essential properties for ASTM B366 Inconel 718 pipe fittings, as they must withstand harsh environmental conditions, pressures, and high temperatures. Suitable fittings must possess high corrosion resistance to withstand attack from extreme chemicals and elements, such as salt water, acidic solutions, and other corrosive media. Stress resistance is another key factor to consider, as it affects the fitting's service life and performance. Therefore, you should ensure that the Inconel 718 fittings you choose have adequate stress resistance, especially in high-pressure systems.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
