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What is Inconel 718 Seamless Tube?
AMS 5589 AMS 5590 Inconel 718 is precipitation hardened nickel alloy containing amounts of niobium and molybdenum. Inconel Alloy 718 exhibits excellent high yield tensile and creep-rupture properties at temperatures up to 1300ºF and oxidation resistance to 1800ºF. 2.4668 Inconel 718 commonly used in aerospace, marine, and chemical processing applications due to its excellent mechanical properties and resistance to high-temperature environments.
Inconel 718 UNS N07718 Specifications
- Density: 8.19 g/c㎡
- Melting range: 1260-1340 ℃
- Size: OD 25～320mm
- W.T: 0.5 - 100mm
- Length: 5.8m, 6m, 11.8m, 12m
- Inconel 718 Seamless Pipe / Tube: AMS 5589, AMS 5590
AMS5590 Inconel 718 Seamless tubing
AMS 5590 is a designation of Inconel 718 Seamless Tube, itself a nickel-chromium alloy with high strength, corrosion and oxidation resistance, and excellent tensile and impact strength at cryogenic temperatures. This designation is made by solution annealing at 1950°F (1065°C) followed by rapid cooling, usually in water, and precipitation hardening is done at 1400°F (760°C) for 10 hours and furnace cool to 1200°F (650°C), then aging at the same temperature for 20 hours.
It is available as tubing and thus it is best suited for fluid lines and components that require resistance and stress-rupture of up to 1300°F (705°C), and oxidation resistance of up to 1800°F (982°C).
AMS5590 is an excellent choice for tensile-limited applications. It has the best transverse ductility in heavy sections, better impact strength, and low-temperature notch strength. Efficiency when welding is about 100% with the gas tungsten-arc process and using the proprietary Nickel Filler Metal 718. AMS 5590 Nickel Inconel 718 can be age-hardened directly, without stress relief.
AMS5590G 2023-05-16 Latest Revision
Nickel Alloy, Corrosion- and Heat-Resistant, Seamless Tubing 52.5Ni - 19Cr - 3.0Mo - 5.1Cb (Nb) - 0.90Ti - 0.50Al - 18Fe Consumable Electrode or Vacuum Induction Melted 1950 °F (1066 °C) Solution Heat Treated
AMS 5589 vs. AMS 5590: What is the Difference?
While both specifications govern premium corrosion- and heat-resistant Inconel 718 seamless tubing, the primary difference lies in their solution heat treatment temperatures, which dictate their final mechanical behavior and ideal application environments.
| Technical Property / Specification | AMS 5589 Seamless Tubing | AMS 5590 Seamless Tubing |
| Primary Material Form | Seamless Tubing (≥ 0.125" OD) | Seamless Tubing (Fluid lines, heavy sections) |
| Solution Heat Treatment | 1775°F (968°C) followed by rapid cooling | 1950°F (1066°C) followed by rapid cooling |
| Precipitation Hardening (Aging) | 1325°F (718°C) for 8 hours, furnace cool to 1150°F (620°C) | 1400°F (760°C) for 10 hours, furnace cool to 1200°F (650°C), age for 20 hours |
| Key Mechanical Performance | Optimized for high creep-rupture strength up to 1300°F | Superior transverse ductility in heavy sections, enhanced impact/notch strength |
| Welding Characteristics | Excellent weldability; post-weld heat treatment recommended | Can be age-hardened directly without initial stress-relief |
AMS5589 Inconel 718 Seamless Tubing
This AMS 5589 Inconel 718 designation is made by solution annealing at 1775°F (968°C) followed by rapid cooling, usually in water, and precipitation hardening at 1325°F (718°C) for 8 hours and furnace cool to 1150°F (620°C). It is available as tubing and thus it is best suited for fluid lines and components that require resistance and stress-rupture of up to 1300°F (705°C), and oxidation resistance of up to 1800°F (982°C).
AMS5589G 2019-12-13 Latest Revision
Nickel Alloy, Corrosion and Heat-Resistant, Seamless Tubing 52.5Ni - 19Cr - 3.0Mo - 5.1Cb (Nb) 0.90Ti - 0.50Al - 18Fe Consumable Electrode Remelted or Vacuum Induction Melted 1775 °F (968 °C) Solution Heat Treated.
This specification covers a corrosion and heat-resistant nickel alloy in the form of seamless tubing 0.125 inch (3.18 mm) and over in nominal OD with nominal wall thickness 0.015 inch (0.38 mm) and over.
Why Partner with HT PIPE for Your Inconel 718 Sourcing?
Navigating specialized metallurgical compliance requires an experienced export partner. When you order AMS 5589 or AMS 5590 seamless tubes from HT PIPE, you benefit from:
Full Material Traceability: Every shipment is accompanied by complete Mill Test Certificates (MTC) according to EN 10204 3.1.
Advanced Testing: On-site ultrasonic, hydrostatic, eddy current, and grain-size verification testing ensure zero-defect distribution.
Global Logistics Handling: Extensive experience coordinating complex industrial freight, custom packaging, and port delivery globally.
Request a Quote for Inconel 718 Seamless Tubing
Need a reliable quote, technical data compliance check, or custom sizes for AMS 5589 / AMS 5590 Inconel 718 Seamless Tubing? Contact our technical sales desk today for rapid pricing and expert engineering assistance.
Email: market@htpipe.com
Phone/WeChat/WhatsApp: +86 19339900201
Company Name: Zhengzhou Huitong Pipeline Equipment Co., Ltd. (HT PIPE)
