Inconel 718 tube is an age-hardenable nickel-chromium-iron alloy with traces of niobium, molybdenum, titanium, and aluminium. It combines superior resistance to corrosion with extreme strength. Heat exchangers and O-rings are two examples of typical applications. ASTM B163 and B516 specifications apply to Inconel 718 Tubes. The dimensions differ depending on the ASTM, ASME, and API standards. Inconel 718 Seamless Tubes, Inconel 718 EFW Pipes, Inconel 718 Welded Tubes are available. There are various schedules, wall thicknesses, and outer diameters for these tubes. The diameters of the ASTM B516 Inconel 718 Tubes ranges from 6mm to 50.8mm, and the wall thicknesses range from 0.7mm to 3mm.
There are several types of pipes, including round, square, rectangular, and hydraulic. Inconel 718 Welded Tubes are available in single random, double random, and cut to length sizes. The tubes’ applications include high corrosive, high temperature, and high pressure applications. Because of the materials composition, Inconel 718 Tubes can have these mechanical properties. Carbon, manganese, silicon, sulphur, copper, and 50% nickel with 17% chromium make up the material. Alloy 718 Tubes are also very strong. They have a minimum yield strength of 482MPa and a minimum tensile strength of 930MPa. Because of the material’s melting point of 1350 degrees Celsius, it can operate at high temperatures.
One application for Inconel 718 tube is in gas turbines, also known as combustion turbines. A gas turbine is a continuous device that is an internal combustion engine.
Choosing an appropriate material to aid in creep resistance is a major problem during the construction of turbines. In this case, Inconel 718 is an ideal metal because it not only has high tensile strength but also has high creep and rupture strength. Furthermore, creep in these turbines is caused by both high stress and high temperatures. Because Inconel 718 is a high strength alloy, the UNS N07718 tube can withstand temperatures of up to 1300°F.
The SAE specified AMS 5590 alloy is solution annealed. This corrosion-resistant AMS 5590 Inconel 718 pipe is annealed at a temperature of 1950°F before being rapidly cooled, preferably in water. These tubes are precipitation hardened at 1400°F for about 10 hours after cooling, and the Inconel 718 tube is furnace cooled to about 1200°F. The product is then aged for 20 hours at the same temperature.
The AMS 5589 Alloy 718 seamless pipe is well suited for fluid line and component applications where the prime objective is resistance to stress-rupture at temperatures up to 1300°F. Besides that, the AMS 5589 specified Alloy 718 seamless tubing has good oxidation resistance up to 1800°F.
Table of Content
Specification | ASTM B163 ASME SB163 / ASTM B516 ASME SB516 |
Size | 5.0 mm – 1219.2 mm |
Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Inconel Tubes available Ex-stock |
Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
Thickness Range | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
Type | Seamless / ERW / Welded / Fabricated / CDW |
Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
Length | Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded |
End Protection | Plastic Caps |
Surface Finish | 2B, No.4, No.1, No.8 Mirror Finish for Inconel Tubes, Finish as per customer Requirements |
Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
Schedule | SCH5, SCH10, SCH40, STD, SCH80, SCH160 |
Tube End | Plain End, Beveled End, Treaded. |
UNS Designation & International Equialent for Inconel 718 Tube | |||||||||
Type | WNR. | UNS | EN | AFNOR | JIS | ||||
Inconel 718 | 2.4668 | N07718 | NiCr 19 NbMo | NC 19 FeNb | NCF 718 |
Grade | C | Mn | P | Si | S | Cr | Ni |
Inconel 718 | 0.08 max | 0.35 max | 0.015 max | 0.35 max | 0.015 max | 17.00 – 21.00 | 50.00 – 55.00 |
Grade | 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 % |
Check ASME B36.19 Inconel 718 Tube, B163 Inconel 718 Sch 40 Tube dimensions and thickness chart, SB163 718 Tube and 718 Inconel DIN 2.4668 Square Tube price per meter in India
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