Inconel 718 Tube

When your application demands high strength, dimensional precision, and corrosion resistance at elevated temperatures, an Inconel 718 tube is frequently the answer. At Enable Tech MFG, we produce seamless, flow-formed Inconel 718 tubes that perform in the conditions that push most materials past their limits: downhole, in-flight, and everywhere in between. Established in 2014 and based in Houston, TX, we've built our entire operation around getting these components right.

What Flow Forming Does for Inconel 718

Flow forming is a cold-working process that materially improves the alloy's mechanical properties. As three precision rollers apply controlled compressive force to the outer diameter of a tube over a mandrel, the grain structure tightens, yield strength climbs, and wall thickness becomes exceptionally uniform. The result is a seamless tube that extruded or machined-from-bar alternatives typically can't match on a strength-per-unit-weight basis.

Our Enablelloy 718 tubes achieve a minimum tensile strength (UTS) of 190 KSI and a minimum yield strength of 175 KSI: numbers that matter when you're specifying components for jet engine casings, pressure housings, or downhole tools operating at temperatures up to 1300°F.

Specifications and Delivery Conditions

Selecting the right nickel alloy Inconel 718 condition requires understanding what your end-use environment demands. 

We deliver Enablelloy 718 in conditions to meet AMS, NACE (MR0175/ISO 15156), and API specifications. Whether your application calls for sour service compliance or full aerospace traceability, we can support it.

Size Range and Ordering Flexibility

Finding a reliable Inconel 718 flow forming shop that can meet dimensional tolerances across a wide size range and work with your production schedule is harder than it should be. Enable Tech flow forms tubes from 1.25" to 12" OD, up to 13.5 feet in length.

Whether you're qualifying a prototype or running production volume, our flexible programs and just-in-time delivery options are structured around how precision manufacturing works. Bring us your drawings and specifications, and we'll get to work producing your part to the requirements you define.

Applications

Inconel 718 has earned its standing in demanding industries for good reason. The combination of corrosion resistance, high-temperature strength, and dimensional stability is difficult to replicate. Enable Tech's flow-formed Enablelloy 718 is used in:

  • Jet Engine Components
  • Pressure Housings and Casings
  • Downhole Tools and Instrumentation
  • Turbine Components
  • Precision Tube for Critical Systems

Our Houston facility serves customers in Oil & Gas, Aerospace, Defense, Mining, and Power Generation; all industries where off-spec components aren't an option.

Get a Quote on Inconel 718 Tube

Our team will review your drawing and specs and get you a quote without the runaround. Whether you have a fully engineered drawing or you're still working through your design, contact Enable Tech, and let's talk through your requirements for Inconel 718 tube today!
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Frequently Asked Questions About Inconel 718 Tube

Yes, they refer to the same alloy composition (UNS N07718). "Inconel" is a registered trademark of Special Metals Corporation, so the generic industry designation is Alloy 718. You'll see both terms used interchangeably in procurement documents and specifications. Enable Tech's flow-formed version of this alloy is marketed as Enablelloy 718.

Is "Inconel 718" the same thing as "Alloy 718"?

Both AMS 5589 and AMS 5590 cover seamless Alloy 718 tubing. The distinction is the heat treatment condition, not the manufacturing method. AMS 5589 calls for solution annealing at 1775°F followed by precipitation hardening, while AMS 5590 uses a higher solution annealing temperature of 1950°F with a different aging protocol. The result is slightly different mechanical properties and microstructures, which makes the choice specification-dependent. Enable Tech can deliver Enablelloy 718 to either condition. The right answer depends on your end-use requirements and any applicable customer or industry specification.

What's the difference between AMS 5589 and AMS 5590 for Inconel 718 tube?

It can. Flow forming cold works the material, which affects the starting microstructure going into heat treatment. Depending on the final mechanical requirements, tubes may be delivered in the flow-formed, solution-annealed, or precipitation-hardened (aged) condition. The appropriate path depends on your target properties and applicable specification, which is one reason it's useful to involve us early in the process.

Does flow forming change how Inconel 718 needs to be heat treated afterward?

No. Alloy 718 has a fully austenitic crystal structure, which means it's non-magnetic. That property is maintained even after cold working, such as flow forming, making it a viable option in applications where magnetic permeability is a design constraint, such as MWD/LWD downhole instrumentation. If ultra-low permeability is a hard requirement (below ~1.005µ), we can discuss whether one of our other non-magnetic alloys is a better fit.

Is Inconel 718 tube magnetic?

Yes, Inconel 718 is weldable, but it requires care. The alloy is susceptible to Laves phase formation and micro-fissuring in the heat-affected zone, so weld procedure selection and post-weld heat treatment matter. If you're planning to weld our tube into a larger assembly, it's worth discussing the intended heat treatment sequence upfront. In some cases, ordering tube in the solution annealed condition rather than fully aged makes downstream welding more predictable.

Can Inconel 718 tube be welded after flow forming?

Yes! If you already have Inconel 718 in your inventory, we can still provide flow forming services for your business. Feel free to contact us with your machining needs, and we can provide flow forming solutions that suit your specifications.

Can Enable Tech Manufacturing provide flow forming services if you already have Inconel 718?

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enable tech mfg, llc
14460 Wagg Way Rd
Houston, TX 77041
281.469.1100

sales@enabletechmfg.com