Incoloy 800 Flanges Manufacturer & Supplier – USA Piping Solution

When industrial processes push beyond the limits of ordinary materials, whether through intense heat or corrosive attack, specialized alloys become indispensable. Incoloy 800 is a proven performer in these challenging arenas. At USA Piping Solution, we focus on manufacturing and supplying high-caliber Incoloy 800 Flanges, providing the robust connection points engineered precisely for such demanding environments. Our understanding of metallurgy and real-world applications ensures every flange we provide meets rigorous global standards and your project’s specific criteria. For Incoloy 800 Flanges that deliver reliability, turn to USA Piping Solution.

Understanding Incoloy 800 Flanges

Think of flanges as the crucial links in any piping network. Incoloy 800 Flanges are a specific class of these connectors, forged from a capable nickel-iron-chromium alloy (UNS N08800). This material belongs to a family including the 800H (UNS N08810) and 800HT (UNS N08811) grades, each offering targeted benefits. The group's value stems from a potent blend of properties: it maintains good strength even at high temperatures, resists degradation from oxidation and carburization effectively, and performs reliably against many types of aqueous corrosion.

Why opt for Incoloy 800? Engineers select these flanges to overcome specific operational hurdles:

1. Elevated Temperatures: Standard Incoloy 800 holds its own up to about 1500°F (816°C). For more extreme heat, the 800H/HT variants bring enhanced resistance to creep and stress rupture, thanks to precise controls on carbon content and grain structure.
2. Corrosive Environments: Substantial nickel and chromium levels provide a strong shield against various chemical attacks, including acids and sulfur-bearing atmospheres. It also offers improved resistance to chloride stress corrosion cracking compared to many stainless steels.
3. Preventing Embrittlement: In processes where carbon or nitrogen absorption could make metals brittle (like heat treating), Incoloy 800 retains its toughness exceptionally well.

In essence, choosing Alloy 800 Flanges means investing in secure, long-lasting joints designed for conditions that would compromise lesser materials.

Common Types of Incoloy 800 Flanges

Different connection needs call for different flange designs. USA Piping Solution offers the full spectrum of Incoloy 800 Flange types utilized in demanding industries:

Slip-On Flanges

These flanges have a slightly oversized bore, allowing the pipe to slide in before being fillet welded externally and internally. They offer easier alignment and lower initial cost but less strength than weld necks, suiting lower-pressure systems well.

Weld Neck Flanges

Featuring a tapered hub butt-welded to the pipe, this design provides the strongest joint. It excels under high pressure/temperature and cyclic loads, allows easy weld inspection, and is often specified as ASTM B564 Incoloy 800 Flange for critical service. Precision alignment and higher cost are the trade-offs.

Blind Flanges

Solid discs designed solely to seal off pipe ends or equipment openings reliably. They offer easy access for maintenance or future modifications.

Socket Weld & Threaded Flanges

• Socket Weld: Used for smaller pipes in moderate conditions, the pipe fits into a socket and is fillet welded. Offers decent flow but potential for crevice corrosion.
• Threaded: Screwed onto threaded pipe ends, suitable for small, low-pressure lines where welding is undesirable. Not ideal for high temps, pressures, or vibration.

Lap Joint Flanges

This two-piece system (stub end welded to pipe, loose backing flange) greatly simplifies bolt hole alignment, especially on large lines. The seal forms against the stub end. While convenient and allowing easier disassembly, its pressure rating is lower than a weld neck.

We also supply specialized types like Orifice, RTJ (Ring Type Joint), and Spectacle Blinds.

Key Specifications for Incoloy 800 Flanges

Adherence to recognized standards guarantees performance. Our Incoloy 800 Flanges meet these benchmarks:

ASTM B564 / ASME SB564

This primary standard dictates the chemical, mechanical, and testing requirements for nickel alloy forgings like flanges used in corrosive and high-temperature service, ensuring quality.

UNS N08800 / DIN 1.4876

These codes identify the specific alloy: N08800 (base 800), N08810 (800H - high temp strength), N08811 (800HT - optimal creep resistance). DIN 1.4876 is a common international equivalent.

Sizes, Pressure Ratings, Face Types

• Sizes: Typically ½" to 48" NPS (custom available), per ANSI B16.5, B16.47, etc.
• Ratings: All standard ANSI Classes (150#-2500#) and PN ratings.
• Faces: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) options cater to different sealing needs.

Material Characteristics: Composition & Properties

What makes Incoloy 800 Flanges perform? It's their specific material makeup:

Chemical Composition (Nominal %)

High Nickel (30-35%) provides corrosion resistance. Chromium (19-23%) battles oxidation. Controlled Carbon (higher in 800H/HT) boosts high-temp strength. Added Ti & Al (esp. in 800HT) enhance thermal stability. Iron forms the balance.

Mechanical Properties (Typical, Room Temp)

While strong (Tensile ~520 MPa/75 ksi, Yield ~205 MPa/30 ksi), the key advantage of 800H/HT variants lies in retaining strength and resisting creep effectively at high operational temperatures. Density is ~7.94 g/cm³, Melting Point ~1385°C.

Where Incoloy 800 Flanges Are Utilized

These robust flanges are essential in various demanding sectors:

• Chemical & Petrochemical: Furnace parts, reformers, heat exchangers.
• Power Generation: Boiler components, superheaters, FGD systems.
• Heat Treatment: Furnace internals, fixtures, radiant tubes.
• Industrial Furnaces: High-temperature heating equipment.
• Oil & Gas: Specific downhole tools, flare systems.
• Waste Incineration: Components enduring heat and corrosive gases.

Sizing Information

Our flanges conform to standard dimensional charts (ANSI B16.5, B16.47). For precise dimensions based on your required size, pressure class, and facing, please consult with our team.

Certification and Quality Assurance

We provide comprehensive documentation for assurance:

• Mill Test Certificates (MTC): EN 10204 3.1B confirming chemical/mechanical results.
• NACE Compliance: Available for sour service (MR0175/MR0103).
• Third-Party Inspection (TPI): Supported upon request.
• PMI Verification: Available to confirm alloy grade.

Why Partner with USA Piping Solution?

• Expertise: We understand nickel alloys and their applications.
• Quality: Committed to meeting and exceeding standards.
• Availability: Stock inventory plus custom manufacturing options.
• Value: Competitive pricing without compromising quality.
• Reliability: Focused on dependable, on-time delivery.
• Support: Responsive service and technical assistance.

Documentation: Clear, complete certifications provided.

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Take the Next Step

Ensure your critical systems have reliable connections. Contact USA Piping Solution today to discuss your Incoloy 800 Flanges. Our team is ready to help with technical details and provide a tailored quote.

Request Your Incoloy 800 Flanges Quote Today!