Adinox Overseas is a trusted name in the global piping industry, offering high-performance and corrosion-resistant solutions like Incoloy 800HT Flanges. Engineered to deliver exceptional strength at elevated temperatures, these flanges are widely used in heat exchangers, chemical processing, petrochemical plants, power generation, and nuclear industries. Manufactured in accordance with ASTM B564 and designated by the universal standard UNS N08811, these flanges provide superior stress rupture and creep resistance in highly corrosive and thermally aggressive environments.

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The Incoloy 800HT Flanges offered by Adinox Overseas are an upgraded version of Incoloy 800 and 800H, containing a precisely controlled composition of nickel, chromium, and iron, stabilized with aluminum and titanium. This unique metallurgy enhances oxidation resistance and metallurgical stability, especially during prolonged exposure to high temperatures. Our products conform to international quality norms, and every batch is provided with material test certificates and third-party inspection reports to ensure consistency and reliability in critical service conditions.

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These ASTM B564 Incoloy 800HT Flanges are available in various types such as weld neck, slip-on, blind, socket weld, lap joint, and threaded flanges to suit diverse application needs. Their excellent weldability and dimensional precision make them ideal for complex piping assemblies, where safety and longevity are paramount. The flange’s outstanding resistance to carburization and sulfidation makes it highly demanded in furnace applications, ethylene pyrolysis, hydrocarbon cracking, and high-pressure steam piping systems.

At Adinox Overseas, quality is our top priority. We use advanced forging and machining technologies to produce UNS N08811 Flanges with tight tolerances and defect-free surfaces. Our technical team ensures rigorous compliance with dimensional and mechanical specifications as per ASTM, ANSI, DIN, and ASME standards. As a customer-focused company, we provide customized sizes, face types (RF, RTJ, FF), and surface finishes to meet project-specific requirements. We serve both domestic and international markets with timely delivery and excellent after-sales support.

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If you're sourcing flanges that must perform under high heat and corrosive stress, Adinox Overseas offers you unmatched value with our precision-crafted Incoloy 800HT solutions. Contact us today to get a quote or request more technical information.

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Specifications Of Incoloy 800HT Flanges

Specifications	ASTM A182, A240 / ASME SA182, SA240
Standards	ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges, JIS Flanges, AWWA Flanges etc.
Dimensions	ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc
Size Range	1/2" (15 NB) to 48" (1200NB)
Pressure / Class	150#, 300#, 600#, 900#, 1500# & 2500#.
Flange Face Type	Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Chemical Composition for Incoloy 800HT Flanges

Grade	C	Mn	Si	S	Cu	Fe	Ni	Cr	Al	Ti
Incoloy 800HT	0.10 max	1.50 max	1.00 max	0.015 max	0.75 max	39.50 min	30.00 – 35.00	19.00 – 23.00	0.15 – 0.60	0.15 – 0.60

Mechanical Properties Of Incoloy 800HT Flanges

Element	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
800	7.94 g/cm3	1385 °C (2525 °F)	Psi – 75,000 , MPa – 520	Psi – 30,000 , MPa – 205	30 %

Application Of Industries

Power Plants

Aerospace

Refineries

Construction

Oil & Gas

Sugar

Chemical

Petrochemical

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