Inconel 800H Flanges Supplier, Manufacturer & Exporter

Inconel 800H Flanges

Inconel 800H Flanges Supplier, Manufacturer & Exporter

Solitaire overseas is a reliable manufacturer, supplier, and exporter of Inconel 800H Flanges (UNS N08810) that has been produced as per ASTM B564 and ASME SB564 standards. These ASTM B564 Inconel 800H Flanges are a subset of our Inconel 800 Flanges category specifically designed to be used in working conditions of high temperature requirement, where high creep ability and stress rupture strength are needed.


Controlled superior carbon content (0.05-0.10) in the alloy enables the alloy to continue services over 800°C. Available in all standard designs Slip On, Weld Neck, Blind, Socket Weld, Threaded and Lap Joint with sizes of 1/2 to 60 inches and pressure classes of 150-2500 lbs. With a presence in more than 45 countries, we provide complete traceability of material, third-party inspection, and ISO 9001: 2015 to its clients. Explore our Inconel 800H Pipe Fittings and Inconel 800H Buttweld Fittings for complete piping system compatibility.


Why Choose Solitaire Overseas for Alloy 800H Flanges?

  • ISO 9001:2015 certified manufacturer with full material traceability
  • ASTM B564 / ASME SB564 compliant production for every heat and lot
  • Available in all pressure classes: 150# to 2500# and PN6 to PN64
  • Dimension standards: ANSI/ASME B16.5, B16.47 Series A & B, B16.48, DIN, EN-1092
  • Third-party inspection by TUV, Bureau Veritas, SGS, Lloyd's Register on request
  • Export to 45+ countries with on-time delivery and competitive Inconel 800H Flanges price
  • Mill Test Certificates (MTC) as per EN 10204 3.1 / 3.2 provided with every order
  • Custom sizes, special facings (RTJ, FF, RF), and heat treatment available on request



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Inconel 800H Flanges Size & Specification

Parameter Details
Product Name Inconel 800H Flanges
Specification ASTM / ASME SB 564 / 160 / 472
Inconel UNS Grade 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)
Flanges Standard ANSI, ASME, BS, DIN, EN
Size ½" to 36"
Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN 1092, DIN
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64
Standards ASTM, ASME
Designation B564, SB564

Incoloy 800H Grade Details

Parameter Value
Standards Incoloy 800H
UNS N08800 / N08810 / N08811
Werkstoff Nr. 1.4876 / 1.4958 / 1.4959

ASTM B564 Inconel 800H Flanges Chemical Composition (%)

Element 800 800H 800HT
Ni 30–35 30–35 30–35
Fe 39.5 min 39.5 min 39.5 min
Cr 19–23 19–23 19–23
Cu 0.75 max 0.75 max 0.75 max
Ti 0.15–0.60 0.15–0.60 0.25–0.60
Al 0.15–0.60 0.15–0.60 0.85–1.20
C 0.10 max 0.05–0.10 0.06–0.10
Mn 1.5 max 1.5 max 1.5 max
S 0.015 max 0.015 max 0.015 max
Si 1.0 max 1.0 max 1.0 max

ASTM B564 Inconel 800H Flanges Mechanical & Physical Properties

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

Types of Inconel 800H Flanges

  • Inconel 800H Threaded Flanges
  • Inconel 800H Weld Neck Flanges
  • Inconel 800H Slip On Flanges
  • Inconel 800H Socket Weld Flanges
  • Inconel 800H Blind Flanges
  • Inconel 800H Lap Joint Flanges
  • Inconel 800H Plate Flanges
  • Inconel 800H All Flanges at a glance
  • Inconel 800H Reducing Flanges
  • Inconel 800H Orifice Flanges
  • Inconel 800H Nipo Flanges
  • Inconel 800H Weldo Flanges
  • Inconel 800H Long Weld Neck Flanges
  • Inconel 800H SWRF Flanges
  • Inconel 800H ASME Flanges
  • Inconel 800H ASME 16.5 Forged Flanges
  • Inconel 800H SORF Flanges
  • Inconel 800H Flat Flanges
  • Inconel 800H Loose Flanges
  • Inconel 800H Square Flanges
  • Inconel 800H Expander Flanges
  • Inconel 800H Ring Type Joint Flanges
  • Inconel 800H RTJ
  • Inconel 800H BLRF Flanges
  • Inconel 800H Groove & Tongue Flanges
  • Inconel 800H High Hub Blinds Flanges
  • Inconel 800H Spectacle Blind Flanges
  • Inconel 800H Weld Neck Flanges Series A or B
  • Inconel 800H Spades Ring Spacers Flanges
  • Inconel 800H Screwed Flanges
  • Inconel 800H Lip type Flanges
  • Inconel 800H WNRF Flanges
  • Inconel 800H Flange Facing Type & Finish
  • Inconel 800H Puddle Flanges

Why Choose Alloy 800H Flanges for High-Temperature Service?

The Inconel 800 H Flanges have a controlled higher percentage of carbon (0.05-0.10) than the normal Alloy 800, which greatly enhances creep strength and stress rupture up to 800°C. The ASTM B564 Inconel 800H Flanges is an excellent oxidant, carburant oxidant, and sulfidant. These flanges are used in the steam methane reforming furnace, ethylene pyrolysis unit, power generation heat exchanger and long-term high temperature piping system where dimensional stability and strength retention is important during the long duration service life.

Applications of ASTM B564 Inconel 800H Flanges

  • Petrochemical and chemical processing equipment
  • Steam methane reforming and ethylene cracking furnaces
  • Power plant heat exchangers and boiler headers
  • Oil & gas refinery piping systems
  • Industrial heating elements and furnace hardware

Inconel 800H Flanges – Price List (Request on Quote)

The price of ASTM B564 Inconel 800H Flanges depends on type, size, schedule, and quantity. Contact Solitaire Overseas for a competitive quote with fast turnaround.
Product Type Size Range Price
Alloy 800H Slip On Flange (SORF) ½" – 60" Request on Quote
Alloy 800H Weld Neck Flange (WNRF) ½" – 60" Request on Quote
Alloy 800H Blind Flange (BLRF) ½" – 60" Request on Quote
Alloy 800H Socket Weld Flange (SWRF) ½" – 4" Request on Quote
Alloy 800H Threaded Flange ½" – 4" Request on Quote
Alloy 800H RTJ Flange ½" – 24" Request on Quote

Frequently Asked Questions – Inconel 800H Flanges

Inconel 800H has UNS designation N08810 with carbon content controlled at 0.05–0.10% for enhanced creep strength above 800°C.

ASTM B564 / ASME SB564 covers Inconel 800H Flanges. Dimensions follow ANSI/ASME B16.5 and B16.47.

Alloy 800H has higher controlled carbon (0.05–0.10%) vs Alloy 800 (≤0.10%), giving better creep/stress rupture strength at high temps.

ASTM B564 Inconel 800H Flanges are rated for continuous service above 800°C, with excellent oxidation and carburization resistance.

Yes. Custom sizes, pressure classes, facings, and heat-treated Inconel 800H Flanges are available. Contact us for pricing.



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