Inconel 718 Flanges Manufacturer & Supplier - USA Piping Solution

When operating conditions push materials to their limits, Inconel 718 Flanges step up to the challenge. USA Piping Solution is a dedicated manufacturer and supplier specializing in these high-performance components, crafted for environments where failure is not an option. Known throughout industry as Alloy 718 or by its designation UNS N07718, this advanced nickel-chromium alloy offers a potent mix of high strength, impressive heat tolerance, and superior corrosion resistance, thanks to its precipitation-hardening capabilities. We provide a full selection of Inconel 718 Flanges, covering all common types, sizes, and pressure classes, all built according to rigorous standards like ASTM B564 / ASME SB564. From standard inventory needs to complex custom designs, USA Piping Solution is your source for dependable Alloy 718 Flanges.

What are Inconel 718 Flanges?

Flanges are fundamental to piping integrity, acting as the crucial link between pipes, valves, and equipment, while also enabling system access. What sets Inconel 718 Flanges apart is the remarkable material itself. This isn't your standard alloy; it's a nickel-based superalloy engineered specifically for performance under duress. Its value lies in a combination of key characteristics:

• Strength Under Heat: It reliably maintains significant tensile strength and resists creep and rupture even at temperatures approaching 1300°F (700°C).
• Robust Corrosion Defense: The alloy effectively withstands a broad spectrum of corrosive attacks, including oxidation and sulfidation, and shows strong resistance to localized issues like pitting and stress-corrosion cracking.
• Age-Hardening Capability: Strategic additions of niobium, tantalum, titanium, and aluminum allow the material's strength to be significantly increased through specific heat treatment processes.
• Weldability: Unlike many high-strength, age-hardenable alloys, Inconel 718 welds remarkably well, demonstrating good resistance to cracking after welding.

These properties make Alloy 718 Flanges indispensable in demanding fields such as aerospace, oil and gas exploration, chemical processing, and advanced power generation. At USA Piping Solution, we ensure every UNS N07718 Flange delivered meets the strict performance criteria these sectors demand.

Types of Inconel 718 Flanges

Different connection scenarios call for different flange designs. USA Piping Solution offers the right Inconel 718 Flange for your application:

Weld Neck Flanges

Often preferred for critical service, Inconel 718 Weld Neck Flanges feature a characteristic tapered hub. This design is butt-welded to the pipe, effectively transferring stress into the pipe itself and providing excellent structural integrity under high pressure, thermal cycling, or high-stress conditions. The smooth transition also helps maintain flow efficiency.

Slip-On Flanges

These flanges slide onto the pipe before being welded in place (typically with internal and external fillet welds). Inconel 718 Slip-On Flanges generally offer easier alignment and potentially lower installation costs, making them suitable for moderate-pressure, less demanding applications where the ultimate strength of a weld neck isn't required.

Blind Flanges

Essentially solid plates, Inconel 718 Blind Flanges are used to securely seal off the end of a pipeline or vessel nozzle. They provide a reliable closure while allowing for future access if needed for inspection or system modification.

Socket Weld & Threaded Flanges

• Socket Weld: Designed with a recessed area (socket) to accept the pipe end, these flanges are secured with a fillet weld around the hub. They are commonly used for smaller pipe sizes in high-pressure service where leak resistance is critical.
• Threaded (Screwed): Machined with internal threads that mate with threaded pipe, these allow for assembly without welding. They're often found in lower-pressure utility lines or in areas where welding presents hazards.

Lap Joint Flanges

This two-piece design uses a 'stub end' welded to the pipe and a separate backing flange that rotates freely. The key advantage is simplified bolt hole alignment, especially useful on large-diameter pipes or systems requiring frequent disassembly. The backing flange doesn't contact the process fluid.

Count on USA Piping Solution to provide the specific Alloy 718 Flange type your project requires.

Inconel 718 Flanges Specifications

Our manufacturing adheres to globally recognized standards for compatibility and safety:

ASTM B564 / ASME SB564

This is the benchmark specification covering nickel alloy forgings, including flanges, designed for demanding high-temperature and corrosive service. All our ASTM B564 Inconel 718 Flange products conform fully to its requirements.

UNS N07718, DIN 2.4668

• UNS N07718: The universal designation identifying Inconel 718 within the Unified Numbering System.
• WERKSTOFF NR. 2.4668: Its equivalent designation under German standards, ensuring clear material specification.

Size Range, Pressure Ratings, Face Types

• Sizes: We typically stock from 1/2" (DN15) through 24" (DN600), with larger dimensions readily available via custom order.
• Pressure Classes: Covering the full range from ASME B16.5 (Class 150 to 2500) and ASME B16.47 for larger sizes, to EN 1092-1 PN ratings, and others (JIS, BS).
• Face Finishes: Including Raised Face (RF), Flat Face (FF), Ring-Type Joint (RTJ) for high-integrity sealing, and specialized Tongue & Groove (T&G) or Male & Female (M&F) facings.

Chemical Composition and Mechanical Properties

The remarkable performance of Inconel 718 stems from its precise chemical balance and the properties developed through heat treatment.

Chemical Composition

The typical recipe for UNS N07718 Flanges (weight %):

Element	Content (%)	Element	Content (%)
Nickel (Ni)	50.00 – 55.00	Aluminum (Al)	0.20 – 0.80
Chromium (Cr)	17.00 – 21.00	Cobalt (Co)	1.00 max
Iron (Fe)	Balance	Carbon (C)	0.08 max
Niobium (Nb) + Ta	4.75 – 5.50	Manganese (Mn)	0.35 max
Molybdenum (Mo)	2.80 – 3.30	Silicon (Si)	0.35 max
Titanium (Ti)	0.65 – 1.15	Phosphorus (P)	0.015 max
Boron (B)	0.006 max	Sulfur (S)	0.015 max
Copper (Cu)	0.30 max

(Composition conforms strictly to ASTM B564)

Mechanical Properties

After solution annealing and aging, ASTM B564 Inconel 718 Flange material typically exhibits these minimum mechanical properties at room temperature:

Property	Typical Minimum Value (Aged)
Tensile Strength	185 ksi (1275 MPa)
Yield Strength (0.2% Offset)	150 ksi (1034 MPa)
Elongation in 2"	12%
Hardness	~36 HRC
Density	0.296 lb/in³ (8.19 g/cm³)
Melting Point	2300 - 2437 °F (1260 - 1336 °C)

(Guaranteed to meet or exceed ASTM B564 minimums)

Applications and Industries Served

You'll find Inconel 718 Flanges playing crucial roles in sectors where performance under pressure is key:

• Aerospace: Jet engine parts, rocket components, structural elements, high-strength fasteners.
• Oil & Gas: Downhole equipment, wellheads, subsea hardware, critical valves, pump internals, flare systems.
• Nuclear Power: Reactor internals, control mechanisms, fuel assembly hardware.
• Chemical Processing: Handling aggressive chemicals in high-temperature reactors and piping.
• Marine: High-stress components exposed to corrosive seawater.
• Power Generation: Parts for advanced turbines and high-efficiency energy systems.
• Specialized Tooling: Dies and tools requiring strength retention at high temperatures.

Inconel 718 Flanges Size Chart

Dimensional accuracy is critical for proper fit and seal. Inconel 718 Flanges from USA Piping Solution conform precisely to the dimensions outlined in standards like ASME B16.5 and B16.47. These detail everything from diameters and thickness to bolt patterns and face details. Given the extensive possibilities, specific dimensional charts for your required size, class, and type are best obtained directly from us. Contact our team for detailed data.

Certifications and Quality Assurance

Our commitment to quality is unwavering:

• Full Traceability: We maintain records linking each flange back to its certified raw material heat.
• Standards Adherence: Manufacturing strictly follows relevant ASTM, ASME, EN, and other applicable standards.
• Material Test Certification (MTC): Standard EN 10204 3.1 MTCs are provided, confirming chemical and mechanical properties. Third-party witnessed 3.2 certs can be arranged.
• Verification Testing: We conduct PMI, mechanical tests, NDT (as required), dimensional checks, and visual inspections to ensure integrity.
• Quality Management: Our operational framework aligns with ISO 9001 principles for consistent quality control.

Why Choose USA Piping Solution for Inconel 718 Flanges?

Selecting USA Piping Solution means choosing reliability:

• Deep Alloy Knowledge: We understand the nuances of Inconel 718 and its applications.
• Quality Focus: Our priority is delivering flanges that perform reliably.
• Available Stock: We hold inventory of common Inconel 718 Flange sizes and types for faster turnaround.
• Custom Solutions: We excel at manufacturing flanges to unique customer specifications.
• Helpful Support: Our team provides knowledgeable assistance for your technical questions.
• Fair Value: We offer competitive pricing for premium-quality materials.
• Efficient Delivery: We manage logistics effectively for timely shipments.
• US-Based Service: Providing accessible support from within the United States.

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Final Call to Action

For systems operating under extreme temperature and corrosive stress, Inconel 718 Flanges from USA Piping Solution offer the robust performance you need. Our dedication to quality, comprehensive inventory, and technical know-how ensure you get the right components, built to last.

Request Your Inconel 718 Flanges Quote Today!