ASTM B983 UNS N07718 Seamless nickel alloy steel tube
ASTM B983 UNS N07718 Seamless nickel alloy steel tube
ASTM B983 UNS N07718 is a seamless nickel-chromium alloy tube, also known as Inconel 718, renowned for its high strength, excellent high and low temperature performance, and good corrosion resistance. Because it can withstand extreme temperatures, high pressures, and corrosive environments, it is suitable for demanding applications in industries such as aerospace, oil and gas, and power generation. Its high strength is achieved through precipitation hardening, and it retains good ductility even at low temperatures.
What are the specific specifications of UNS N07718?
INCONEL 718 alloy (UNS N07718/W.Nr. 2.4668) is a high-strength, corrosion-resistant nickel-chromium alloy with a service temperature range of -423°F to 1300°F. This age-hardening alloy is easy to machine, allowing for the manufacture of even complex parts.
Inconel 718 is a γ'-strengthened alloy with excellent mechanical properties under both high and low temperature conditions. It is suitable for temperatures up to approximately 1300°F (700°C). It is easy to machine and age-harden.
Such applications are common in industries such as power generation, chemicals, petrochemicals, and aerospace. Traditional advanced nickel-based high-strength alloys are based on nickel and chromium, with the addition of elements such as molybdenum, tungsten, and cobalt to enhance solid solution strengthening. In applications where high-temperature strength is critical, elements such as aluminum, titanium, and niobium must be added to achieve precipitation strengthening.
ASTM B983 Inconel 718 Nickel Alloy Pipe Equivalent Grades
| Grade | UNS | W.Nr |
| Alloy 718/Haynes 718 | N07718 | 2.4668 |
Nickel Alloy Inconel 718 Standard
| Bar | Forging | Pipe and Tube | Sheet/Strip | Wire |
| ASTM B637 | ASTM B637 | ASTM B983 | ASTM B670 | AMS 5832 |
Application Areas
Aerospace: Aircraft engine components, such as turbine disks and compressor blades, and spacecraft.
Oil and Gas: Downhole and wellhead equipment that must withstand high pressure and corrosive fluids.
Power Generation: Components for gas turbines, steam turbines, and nuclear reactors.
Chemical Processing: Equipment for handling corrosive chemicals, such as reactors, valves, and heat exchangers.
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of Inconel series alloy tubes/bars/plates/fittings available for fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), chemical composition certificate, and mechanical property certificate.
✅ Value-added services: slitting, cutting, polishing, surface treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export-required documents.
Gnee Steel is a supplier of Inconel 600 and Inconel 725, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness 0.1 to 100 mm; width 10-2500 mm); strips; alloy round bars (diameter 3-800 mm); flat bars (thickness 2-100 mm; width 10-500 mm); hexagonal bars (size 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide customers with 600/725 alloys, whose products meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells Inconel 600 and Inconel 725, pipes, tubes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
