Inconel 718 Pipes & Tubes Manufacturer & Supplier – USA Piping Solution

When projects push materials to their limits, Inconel 718 steps up. It's a high-performance nickel-chromium superalloy, well-regarded for maintaining serious strength even when hot, fighting off corrosion effectively, and performing reliably across a huge temperature span – think cryogenic deep freeze all the way up to roughly 1300°F (700°C). Here at USA Piping Solution, we focus on manufacturing and supplying Inconel 718 Pipes & Tubes. We work closely with demanding fields like aerospace, chemical processing, oil and gas, and power generation, delivering the robust, high-integrity materials these industries rely on. Whether your design calls for the uniform strength of Inconel 718 Seamless Pipes or the adaptable production of Inconel 718 Welded Tubes, our stock and manufacturing setup are ready to meet your specifications, standard or custom.

What are Inconel 718 Pipes & Tubes?

At their heart, these are cylindrical components formed from the nickel-chromium alloy UNS N07718 (also W.Nr. 2.4668). But what truly sets Inconel 718 apart happens inside the metal. It's precipitation-hardenable. This means a precise heat treatment process causes specific elements – Niobium being the main driver, aided by Aluminum and Titanium – to form extremely fine, reinforcing particles (engineers call them gamma double prime and gamma prime phases) distributed throughout the alloy's structure. It's this internal architecture that gives Inconel 718 its impressive muscle.

Consider these key attributes:

1. Strength Under Heat: It doesn't easily give up its strength at high temperatures, maintaining excellent tensile, yield, and creep-rupture properties where many metals falter.
2. Tough on Corrosion: This alloy resists a wide range of corrosive attacks, including common headaches like pitting, crevice corrosion, and stress-corrosion cracking. It holds its own in aggressive chemical and marine environments.
3. Wide Temperature Service: From the intense cold of -423°F (-253°C) up towards 1300°F (700°C), it maintains useful mechanical properties. Plus, it resists oxidation reasonably well up to 1800°F (980°C).
4. Weldability: For an alloy that gets its strength from heat treatment, Inconel 718 is comparatively straightforward to weld, showing good resistance to cracking after the welding process.
5. Fabrication Friendly: Designers appreciate that it can be shaped into complex forms without undue difficulty, enabling intricate part designs.

These characteristics make Inconel 718 Pipes & Tubes indispensable when systems must contend with high pressures, dramatic temperature swings, and corrosive substances all at once.

Inconel 718 Pipes & Tubes Specifications

USA Piping Solution supplies Inconel 718 Pipes & Tubes built to conform to recognized international standards and precise customer requirements. Our aim is always to deliver products meeting strict criteria for dimensional accuracy, material soundness, and predictable service life.

Technical Specifications

• Governing Standards: Production adheres to specifications such as ASTM B983, B163, B516, B670, B829; ASME SB983, SB163, SB516, SB670, SB829; relevant API norms; SAE AMS 5589, AMS 5590; DIN 17751, and others.
• Dimensional Control: We work within the tolerances established by ASTM, ASME, and API standards.
• Pipe Sizes (NPS): Common availability ranges from 1/8" NB up to 24" NB. Ask us about possibilities for larger or non-standard pipe dimensions.
• Tube Sizes (OD): Tube ODs span from small diameters (like 1/16" / 1.59 mm) up towards 10" (254 mm). Wall thickness capabilities vary significantly with OD – check with us for your specific OD/WT combination, from thin 0.010" (0.25 mm) walls and up.
• Schedule (SCH) Variety: Standard schedules (SCH 5, 10, 40/STD, 80/XS, 160, XXS, etc.) are typically available or can be produced to order.
• Manufacturing Routes:
• Seamless: Options include Cold Drawn (for tight tolerances/finish) or Hot Finished (often practical for larger sizes).
• Welded: Utilizing processes like ERW, EFW, or LSAW, chosen based on size and application demands.
• Length Options: Standard mill lengths (Single/Double Random) are common stock, but we routinely provide material precisely Cut-to-Length based on your needs.
• Available Forms: Beyond standard Round shapes, we supply Square, Rectangular, long-length Coiled Tubing, U-Bends (common in heat exchangers), Pancake Coils, high-precision Hydraulic Tubing, fine-bore Capillary Tubes, and various Hollow Sections.
• End Preparation: Choose from Plain Ends (PE), Beveled Ends (BE) ready for welding, or Threaded Ends (TE).
• Surface Condition: We offer finishes ranging from standard industrial Annealed & Pickled (AP) or Bright Annealed (BA), to Mill Finish, various mechanically Polished surfaces, or high-purity Electropolished finishes.

Chemical Composition and Mechanical Properties

The performance of Inconel 718 is directly tied to its specific elemental makeup. At USA Piping Solution, we ensure through rigorous testing that the material meets the tight chemical composition ranges required, which in turn allows it to achieve its target mechanical properties after correct heat treatment.

Chemical Composition (Typical)

(Target chemistry based on UNS N07718 / W.Nr. 2.4668)

Element	Symbol	Content (%)	Its Main Job in the Alloy
Nickel (Ni)	Ni	50.00 - 55.00	The backbone, providing toughness, stability, and baseline corrosion defense.
Chromium (Cr)	Cr	17.00 - 21.00	Essential for resisting oxidation and many corrosive environments.
Iron (Fe)	Fe	Balance	Contributes strength and influences the alloy's overall cost structure.
Niobium+Tantalum	Nb+Ta	4.75 - 5.50	The powerhouse for precipitation hardening, enabling high strength levels.
Molybdenum (Mo)	Mo	2.80 - 3.30	Improves resistance to pitting and crevice corrosion, adds strength.
Titanium (Ti)	Ti	0.65 - 1.15	Works alongside Al and Nb in the age-hardening reaction.
Aluminum (Al)	Al	0.20 - 0.80	Also participates in hardening and helps resist high-temperature oxidation.
Cobalt (Co)	Co	1.00 max	Generally a minor addition with controlled limits.
Carbon (C)	C	0.08 max	Levels are carefully managed to ensure good weldability and avoid problems.
Manganese (Mn)	Mn	0.35 max	Aids during melting and improves the material's response to hot working.
Silicon (Si)	Si	0.35 max	Primarily acts as a deoxidizer during the melting process.
Phosphorus (P)	P	0.015 max	An undesirable trace element, kept to very low levels.
Sulfur (S)	S	0.015 max	Another trace element minimized to prevent negative effects like weld cracking.
Boron (B)	B	0.006 max	Tiny, controlled amounts can enhance creep strength and hot workability.
Copper (Cu)	Cu	0.30 max	Usually only present as a residual trace.

Once the chemistry is right, heat treatment develops the final strength.

Mechanical Properties

(These figures represent typical room temperature performance for material properly Solution Annealed and Aged. This aged condition unlocks the alloy's full strength potential.)

Property	Condition	Minimum Target	Typical Result	Units	Why This Matters
Ultimate Tensile Strength	Annealed + Aged	150,000 (1034)	185,000 (1275)	psi (MPa)	The maximum pull the material can take before breaking.
Yield Strength (0.2% Offset)	Annealed + Aged	125,000 (862)	150,000 (1034)	psi (MPa)	The stress level where it starts to permanently deform; a key engineering limit.
Elongation in 2"	Annealed + Aged	12%	25%	%	Shows how much it can stretch before failing – a measure of ductility.
Hardness	Annealed + Aged	--	~36	Rockwell C	Resistance to dents and scratches; gives a general feel for wear resistance.
Density	--	--	0.296 (8.19)	lb/in³ (g/cm³)	Needed for accurate weight estimates, vital in mobile or aerospace designs.
Melting Range	--	2300 - 2437 (1260-1336)	--	°F (°C)	The temperature window where the alloy changes from solid to liquid.

Remember, the material is much softer and more formable in the 'solution annealed' state, before the aging heat treatment.

Types and Variations of Inconel 718 Pipes & Tubes

Different jobs call for different tools. That's why USA Piping Solution offers Inconel 718 pipes and tubes made through several production methods:

1. Inconel 718 Seamless Pipes & Tubes:
• The Process: These begin as solid metal billets. They're pierced or extruded, then drawn or rolled down to their final dimensions. Critically, there's no welding involved.
• The Advantage: Maximum pressure integrity and a completely uniform structure. Without a weld seam, there's no potential weld-related weak point. This makes seamless the top choice for high-pressure containment, critical flow paths, and services where absolute reliability is paramount.
• Refinements: Cold Drawn Seamless (CDS) typically offers tighter dimensional control and a smoother finish. Hot Finished Seamless (HFS) is often practical for achieving larger diameters or heavier walls.
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2. Inconel 718 Welded Pipes & Tubes:
• The Process: Production starts with flat-rolled stock (strip or plate). This is carefully formed into a cylinder, and the edges are permanently joined using a high-quality welding technique (ERW, EFW, LSAW are typical).
• The Advantage: This route can often be more cost-effective, especially as diameters increase. It can also facilitate the production of very long continuous lengths. Welded tubes provide excellent service in many structural roles and fluid handling systems where the absolute pressure rating of seamless isn't the defining factor.
• Refinements: Post-weld drawing can be used to improve tolerances and surface condition. Heavy wall welded pipes are available for applications needing extra structural rigidity or pressure handling.
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3. Forms for Specific Jobs:
• Round: The standard profile for moving fluids/gases and countless structural uses.
• Square/Rectangular: Often specified when building structural frames, supports, or certain architectural designs.
• Oval: Utilized for specialized flow needs, fitting into tight spaces, or achieving a particular look.
• Coiled Tubing: Provided in exceptionally long lengths wound onto spools. Perfect for downhole applications, running chemical injection lines, or simplifying complex instrumentation routes.
• U-Tubes: Precisely bent tubes, primarily destined for shell-and-tube heat exchangers where they maximize heat transfer surface area.
• Hydraulic Tubing: Made to demanding tolerances and high internal cleanliness standards crucial for reliable hydraulic system performance.
• Instrumentation Tubing: Small-diameter tubes providing the vital links between process sensors, gauges, and control elements. Reliability is key.
• Heat Exchanger / Condenser Tubes: Engineered with thermal performance in mind, often requiring specific surface conditions or specialized integrity tests.
• Capillary Tubes: Possessing very small, tightly controlled inside diameters, used for precisely metering tiny fluid flows or sensing pressure differentials.

Applications and Industries Served

Because it offers such a strong combination of properties, Inconel 718 Pipes & Tubes are crucial materials in some of the most challenging industrial arenas:

• Aerospace: It's a workhorse material for demanding gas turbine engine parts (think discs, shafts, casings, blades), hardware for liquid-fueled rockets, high-strength fasteners, and key airframe structures needing reliable performance under load and across wide temperature shifts.
• Oil & Gas: Essential for tools used deep downhole, wellhead fixtures, subsurface safety valves, critical hangers and connectors, and piping systems that must withstand harsh mixes of sour gas (H₂S), CO₂, brines, often combined with high pressures and temperatures.
• Chemical Processing: Widely used for reactors, process piping networks, valve components, and pumps that handle highly corrosive chemicals, potent acids, or hot process streams where resistance to pitting, crevice attack, and stress corrosion is vital.
• Power Generation: Found in hot gas path components within industrial gas turbines, parts inside nuclear reactors (where its corrosion resistance and nuclear properties are valued), and critical high-temperature fasteners throughout power plants.
• Cryogenic Applications: Its ability to stay strong and tough even at extremely low temperatures makes it a good choice for building storage tanks, transfer piping, and components handling liquefied gases like LNG.
• Marine Environments: Used in demanding subsea hardware, parts for advanced naval vessels, and structural components on offshore oil and gas platforms that require both high strength and dependable resistance to saltwater corrosion.
• High-Performance Automotive: Selected for specialized exhaust systems, demanding turbocharger components, and engine parts facing extreme heat cycles and high mechanical stress.
• Industrial Tooling: Valued for making durable high-temperature dies, fixtures, and tooling employed in hot metal forming and other manufacturing processes involving significant heat.

Inconel 718 Pipes & Tubes Size Chart

USA Piping Solution provides Inconel 718 Pipes & Tubes across the standard range of industry sizes and schedules. Typically, pipes are identified by Nominal Pipe Size (NPS) and a Schedule (SCH) number indicating the wall thickness class. Tubes are more commonly specified by their exact Outside Diameter (OD) and Wall Thickness (WT).

• Common Pipe Schedules: We regularly stock and supply SCH 10, SCH 40 (STD), SCH 80 (XS), SCH 160, XXS, and can readily source other schedules.
• NPS Scope: Standard availability generally runs from 1/8" NPS up to 24" NPS. Options for larger diameters, often via fabricated pipe, can be discussed.
• Tube OD Scope: We handle a variety of fractional and metric ODs, typically from 1/4" OD up into the multi-inch range.
• Wall Thickness Range: Wall thicknesses cover a wide spectrum, depending on the OD/NPS and the specified schedule or exact thickness value, all conforming to standards like ASME B36.10/B36.19.

The most direct way to check availability for your specific size is to contact our sales team. Just provide the OD/NPS and wall thickness/schedule you need, and we'll give you current stock levels or discuss production timelines. Detailed dimensional information and weight calculations are also available.

Certifications and Compliance Standards

Quality assurance is more than a final check at USA Piping Solution; it's integral to our supply process. We deliver Inconel 718 Pipes & Tubes manufactured and certified to fully comply with relevant international standards, providing you with documented confidence in the material.

• Meeting the Specs: All material conforms to the requirements of applicable standards like ASTM, ASME, SAE (AMS), DIN, or others as ordered.
• Quality Systems: Our operations often align with established ISO 9001 quality management practices, ensuring process control and traceability.
• Rigorous Verification: We utilize appropriate testing methods to confirm material properties. Depending on the specification, this can include:
• Chemical Analysis (confirming the elemental makeup)
• Mechanical Testing (verifying Tensile Strength, Yield Strength, Elongation, Hardness)
• Non-Destructive Examination (NDE) – options like Hydrostatic Pressure tests, Eddy Current, Ultrasonic (UT), Dye Penetrant (PT), or Radiography (RT) are performed when required by the standard or customer.
• Positive Material Identification (PMI) – confirms the alloy grade.
• Microstructural Checks (if specified).
• Intergranular Corrosion Testing (when relevant).
• Complete Documentation: Every shipment comes with a Mill Test Certificate (MTC) according to EN 10204 3.1. This certificate is the material's pedigree, detailing its heat number, verified chemical analysis, mechanical test results, heat treatment applied, and tests performed, ensuring full traceability. We can also coordinate additional specific testing or witness points by third-party inspectors (TPI) if your project requires it.

Why Choose USA Piping Solution for Inconel 718 Pipes & Tubes?

Selecting USA Piping Solution for your Inconel 718 Pipes & Tubes means choosing a supplier committed to more than just fulfilling an order. We aim to be a reliable resource, contributing to your project's success through quality materials and dependable service.

What does this mean for you? It means receiving material that consistently meets rigorous quality standards, backed by thorough testing. It means having access to a team that understands Inconel 718 not just from datasheets, but from practical application knowledge, ready to offer helpful technical input. It means benefiting from our substantial inventory for quick access to common sizes of Inconel 718 Seamless Pipes and Inconel 718 Welded Tubes, combined with the manufacturing flexibility to produce custom orders efficiently.

Beyond the basics, we offer value-added services like precision cutting, specialized finishes, and fabrication capabilities for components like U-bends. We focus on supply chain reliability to help keep your projects on track and provide competitive pricing that reflects true value. Expect clear communication, a proactive approach, and the assurance of complete, compliant documentation (MTC EN 10204 3.1) with every shipment. We work to earn your trust as a dependable partner.

Related Products

Our capabilities encompass a wide range of high-performance alloys beyond Inconel 718. Consider USA Piping Solution for:

Final Call to Action

When your project requires the proven performance of Inconel 718 Pipes & Tubes in demanding conditions, USA Piping Solution stands ready to deliver. We combine quality materials with technical understanding and responsive service.

Request Your Inconel 718 Pipes & Tubes Quote Today!