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ASTM B564 Incoloy 800HT Flanges

ASTM B564 Incoloy 800HT Flanges
Sizes: 1/2" to 24" (DN15 to DN600)
Pressure Class: Class 150 to 2500, PN6 to PN160
Grades: Incoloy 800HT (UNS N08811 / W.Nr. 1.4959)
Standard: ASTM B564, ASME B16.5, B16.47, MSS-SP-44
Face Type: RF, FF, RTJ, Lap Joint, Large Tongue & Groove
Surface Finish: Pickled, Machined, Anti-rust Paint
Process: Forged, CNC Machined, Solution Annealed
Origin: India, Japan, Germany, USA
goldenislands.com.sa

ASTM B564 Incoloy 800HT Flanges represent the peak of the 800 series alloy family, specifically refined for maximum resistance to creep and stress rupture. Identified as UNS N08811, these flanges maintain the same base chemistry as Incoloy 800H but with further restricted levels of Aluminum and Titanium (0.85–1.20% combined). This precise chemical control, paired with a high-temperature solution annealing process, ensures a coarse grain structure that provides superior mechanical strength and stability in environments where temperatures consistently exceed 1100°F (593°C).

Our Incoloy 800HT weld neck, blind, slip-on, and socket weld flanges are manufactured in strict accordance with ASME B16.5 and ASME B16.47 standards. These components are essential for high-stress applications in the petrochemical, power generation, and thermal processing industries, where they resist oxidation, carburization, and nitriding over long service lives. By utilizing 800HT forged flanges, engineers can achieve higher allowable design stresses compared to the standard 800 or 800H grades. Each flange is meticulously forged and CNC machined to provide a high-integrity, leak-proof seal that stands up to the most demanding industrial thermal cycles.



ASTM B564 Incoloy 800HT Flanges Features

  • » Maximum Creep Resistance: Engineered with a combined Aluminum and Titanium content of 0.85–1.20% to provide the highest creep and stress-rupture strength in the Incoloy 800 series.
  • » Enhanced Thermal Stability: Specifically designed for long-term service in extreme environments where temperatures consistently exceed 1100°F (593°C).
  • » Superior High-Temp Oxidation: Forms a tightly adherent oxide scale that protects the flange surface from scaling and internal oxidation during thermal cycling.
  • » Carburization Resistance: Exceptional performance in carbon-rich environments, making it a staple for hydrocarbon cracking and industrial furnace components.
  • » Coarse Grain Optimization: High-temperature solution annealing ensures a coarse grain structure (ASTM No. 5 or coarser), which is essential for peak mechanical performance at high stress.
  • » Corrosion Immunity: Maintains excellent resistance to many sulfur-containing atmospheres and various organic/inorganic acids at elevated temperatures.
  • » Higher Allowable Design Stress: Permits the use of thinner walls or higher pressure ratings compared to standard Incoloy 800/800H due to its refined chemistry.
  • » Precision Forging Quality: Forged under ASTM B564 specifications to ensure uniform structural integrity and reliable sealing for high-pressure RTJ or RF connections.

ASTM B564 Incoloy 800HT Flanges Specification

Grade & Chemistry

  • Material Grade: Incoloy 800HT (Restricted Chemistry)
  • UNS/W.Nr: UNS N08811 / 1.4959
  • Al + Ti Content: Optimized range of 0.85% – 1.20%
  • Specification: ASTM B564 / ASME SB564

WNRF & SORF Types

  • Weld Neck (WNRF): Best for extreme creep-rupture environments
  • Slip-On (SORF): Used for simplified welding in heater systems
  • Design: High-temperature solution annealed for coarse grain
  • Application: Hydrocarbon cracking and chemical reactors

Instrumentation Joints

  • Socket Weld (SWRF): Ideal for critical small-diameter piping
  • Threaded Flanges: High-integrity threads per ASME B1.20.1
  • Joint Integrity: Resistant to nitriding and carburization
  • Service: Industrial furnace atmospheric components

System Isolation

  • Blind Flange (BLRF): Solid forging for sealing vessel nozzles
  • Spectacle Blind: Positive shut-off for thermal maintenance
  • Stability: Maintains ductility under long-term heat exposure
  • Machining: CNC precision-turned face and bolt holes

Specialized Faces

  • Lap Joint Flanges: Used for quick-dismantle piping sections
  • RTJ Flange: High-pressure metal-to-metal sealing
  • Pressure: Optimized for Class 1500# and 2500# service
  • Finish: Mirror-smooth groove machining for ring gaskets

Flow Control & Facing

  • Orifice Flanges: Specialized for high-temp flow monitoring
  • Raised Face (RF): Phono-groove serrated (125-250 AARH)
  • Flat Face (FF): Available for low-pressure boiler connections
  • Ring Flange: Heavy-duty forged ring plates

Thermal Limits

  • Class Ratings: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
  • Max Temp: Superior service above 600°C (1100°F)
  • Creep Rupture: Highest allowable stress in the 800 series
  • Compliance: ASME B16.5, B16.47 Series A & B

Sizing Scope

  • Standard Size: 1/2" (DN15) up to 24" (DN600)
  • Large Diameter: 26" to 60" for massive vessel nozzles
  • Wall Thickness: Sch 10 to Sch XXS
  • Origin: Globally sourced from India, Europe, and USA

Quality Verification

  • Test Reports: EN 10204 3.1 MTC, PMI, UT, and LPT
  • Grain Analysis: Verification of ASTM No. 5 or coarser
  • Mechanical: High-temperature tensile and creep-rupture tests
  • Marking: Grade, Heat No, Size, and ASME Rating stamped

ASTM B564 Incoloy 800HT Flanges Detailed Specifications

Specification Details
Specification ASTM B366, ASTM SB 366, ASTM B564, ASME SB564
Grade ASTM B564 Inconel 600 (UNS N06600, Alloy 600, 2.4816), Inconel 601 (UNS N06601, Alloy 601, 2.4851), Inconel 625 (UNS N06625, Alloy 625, 2.4856), Inconel 800 (UNS N08800, Alloy 800)
Connect Type/ Flange Face Type Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue, Groove
Surface treatment Anti-rust oil, transparent/ yellow/ black anti trst paint, Zinc, hot dipped galvanized
Size Range 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Pressure DIN:PN6 PN10 PN16 PN25 PN40; ANSI: class: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-PN6, PN10, PN16, PN25, PN40, PN64 etc.
JIS: 5K, 10 K, 16 K 20 K,30 K,40 K, 63 K
Standard ANSI DIN,GOST,JIS,UNI,BS,AS2129,AWWA,EN,SABS,NFE etc.
ANSI Flange, ASME Flange, BS Flange, DIN Flange, EN Flange
  • B.S : BS4504 , BS3293, BS1560, BS10
  • DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638
  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • AS 2129: table D; table E; table H
  • The other standard:AWWA C207;EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203;UNI2276
  • American standard (ANSI)
  • German (DIN)
  • British standard (BS)
  • Any other specilised flanges.
Production technique: Forged, Heat treated and machined
Special Design As per your drawing
AS, ANSI, BS, DIN and JIS
15 NB (1/2″) to 200 NB (8″)
Equal and Reducing Configurations

ASTM B564 Incoloy 800HT Threaded Flange, Slip-On Flange, Socketweld Flange, Weld Neck Flange, Blind Flange
Test Direct-reading Spectrograph,Hydrostatic testing machine,X-ray detector,UI trasonic flaw detector,Magnetic particle detector
Equipment Press machine ,Bending machine,Pushing Machine,electric bevelling machine Sand-blasting machine,etc
Origin West Europe / Japan / Indian / USA / Korean
Test Certificates Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report
Specialized manufacturer of ASTM B564 Incoloy 800HT Blind Flanges, ASTM B564 Incoloy 800HT Table Flanges, ASTM B564 Incoloy 800HT Weld Neck Flanges, ASTM B564 Incoloy 800HT Threaded Flanges, ASTM B564 Incoloy 800HT Slip-On Flanges, ASTM B564 Incoloy 800HT Socketweld Flanges, ASTM B564 Incoloy 800HT Plate Flanges, ASTM B564 Incoloy 800HT Lap Joint Flanges, ASTM B564 Incoloy 800HT Loose Flanges, and ASTM B564 Incoloy 800HT Orifice Flanges. ASTM B564 Incoloy 800HT AS 4087 Water Flanges are available in class 150, 300, 600, 900, 1500 and 2500.
Key markets and industries
  • Bitumen upgraders.
  • Heavy oil refineries.
  • Nuclear power (mostly seamless).
  • Petrochemicals and acids.
Similar Pipe Flange Key Grades
  • Alloy 200 (UNS N02200) Flanges
  • Alloy 201 (UNS N02201) Flanges
  • Alloy 400 (UNS N04400) Flanges
  • Alloy 600 (UNS N06600) Flanges
  • Alloy 625 (UNS N06625) Flanges
  • Alloy 800 (UNS N08800) Flanges
  • Alloy 800H (UNS N08810) Flanges
  • Alloy 800HT (UNS N08811) Flanges
  • Alloy 825 (UNS N08825) Flanges
  • Alloy 20 (UNS N08020) Flanges
  • Alloy C-276 (UNS N010276) Flanges
  • C-4 (UNS N06455) Flanges
  • Alloy B-2 Flanges
  • C-22 (UNS N06022) Flanges
  • Alloy 6XN (UNS N08367) Flanges
  • ASTM A240 Type UNS S30601 Flanges
  • ASME SA240 Type UNS S30601 Flanges
  • ASTM A240 Type UNS S32615 Flanges
  • ASME SA240 Type UNS S32615 Flanges

Incoloy 800HT Flanges Type, Size Range & Dimensional Standards

Flange Type Dimension Range Standard / Drawing Valid Norm
Incoloy 800HT Blind Flanges DN15 – DN2500 DIN2527 PN16 DN150 BL 300lb 6"
½" – 24" Standard ANSI / ASME Class 150 to 2500
Incoloy 800HT Threaded with neck DN15 – DN150 DIN2566 DN32 / 42.4 TH 300lb 1"
Incoloy 800HT Threaded Flanges ½" – 24" Standard Threaded NPT / BSPT Sizes
Flanges smooth for welding (Plate) DN15 – DN2500 DIN2576 DN150
Incoloy 800HT Welding Neck Flanges DN15 – DN2500 DIN2635 DN150 / 168.3 WN 300lb 6", GOST Dy150 Py16
½" – 24" / Dy10 – Dy2400 ASME B16.5 WN Classes 150 – 2500
Incoloy 800HT loose flanges, smooth Bunde DN15 – DN2500 DIN2642 DN150
Incoloy 800HT loose flanges Stub DN15 – DN2500 DIN2673 DN150
Incoloy 800HT Welding flanges with neck DN15 – DN2500 DIN86030 DN150
Incoloy 800HT Slip On Flanges ½" – 24" SO 300lb 6"
Dy10 – Dy2400 GOST Standard Specifications
Incoloy 800HT Lap Joint Flanges ½" – 24" LJ 300lb 6"
Incoloy 800HT Socket Welding Flanges ½" – 3" SW 300lb 6"
Forged and Plate Flanges
(Slip-On, Weld Neck, Blind, Lap Joint, Threaded, Socket Weld, Reducing, Plate)
½" – 36" Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue & Groove

Types of ASTM B564 Incoloy 800HT Flanges

Incoloy 800HT Weld Neck Flange

Incoloy 800HT Weld Neck Flange

Incoloy 800HT Lap Joint Flange

Incoloy 800HT Long Weld Neck Flange

Incoloy 800HT Orifice Flange

Incoloy 800HT Orifice Flange

Incoloy 800HT Spectacle Blind Flange

Incoloy 800HT Blind Flange

Incoloy 800HT Ring Flange

Incoloy 800HT Ring Flange

Incoloy 800HT Socket Weld Flange

Incoloy 800HT Socket Weld Flange

Types of Incoloy 800HT Flanges

  • Incoloy 800HT Table Flanges/ SS 304 Flanges
  • Incoloy 800HT Raised Face Weld Neck Flanges
  • Incoloy 800HT Threaded Flanges/ SS 304
  • Incoloy 800HT Raised Face Slip-On Flanges
  • Incoloy 800HT Socketweld Flanges
  • Incoloy 800HT Raised Face Blind Flanges
  • Incoloy 800HT Blind Plate Flanges
  • Incoloy 800HT Lap Joint Flanges
  • Incoloy 800HT Flanged Buttweld
  • Incoloy 800HT Spectacle Blind
  • Incoloy 800HT Loose Flanges Manufacturer
  • Incoloy 800HT Orifice Flanges
  • Incoloy 800HT DIN Flanges/ SS 304 Flange
  • Incoloy 800HT AS 4087 Water Flanges
  • Incoloy 800HT ANSI Class 150 Flanges
  • Incoloy 800HT ANSI Class 300 Flanges
  • Incoloy 800HT ANSI Class 600 Flanges
  • Incoloy 800HT ANSI Class 900 Flanges
  • Incoloy 800HT ANSI Class 1500 Flanges
  • Incoloy 800HT ANSI Class 2500 Flanges
  • Incoloy 800HT plate flanges suppliers
  • Incoloy 800HT anchor flanges
  • Incoloy 800HT Square Flanges
  • Incoloy 800HT Blank Flanges suppliers
  • Incoloy 800HT Screwed Flanges
  • Incoloy 800HT Ring Type Joint Flanges
  • Incoloy 800HT Ring Flange/ SS 304 Flanges

ASTM B564 Incoloy 800HT Flange Chemical Composition

Element ASTM B564 / UNS N08811 (%)
Nickel (Ni) 30.0 – 35.0
Chromium (Cr) 19.0 – 23.0
Iron (Fe) 39.5 min
Carbon (C) 0.06 – 0.10
Aluminum (Al) 0.25 – 0.60
Titanium (Ti) 0.25 – 0.60
Al + Ti 0.85 – 1.20
Manganese (Mn) 1.50 max
Silicon (Si) 1.0 max
Sulfur (S) 0.015 max
Copper (Cu) 0.75 max

ASTM B564 Incoloy 800HT Flange Mechanical Properties

Property Value (Min. Requirement)
Tensile Strength (MPa) 450 MPa (65,000 psi)
Yield Strength (0.2% Offset) 170 MPa (25,000 psi)
Elongation (%) 30%
Hardness (Brinell) 120 - 175 HBW
Grain Size (ASTM) No. 5 or Coarser
Density 7.94 g/cm³
Modulus of Elasticity 196.5 GPa (at Room Temp)

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