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Incoloy Flanges
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High-Temperature Iron-Nickel-Chromium Flanges

Incoloy Flanges

Incoloy 800/800H/800HT & 825 flanges for high-temperature furnace and acid-resistant chemical process piping.

Incoloy Flanges
ASTM / ASME Certified Material

Product Overview

Incoloy flanges bridge the gap between stainless and full nickel-alloy piping — the 800 series holds up under sustained high-temperature furnace and heat-treatment service, while 825 adds molybdenum and copper for strong acid-corrosion resistance.

We supply weld neck, slip-on and blind types machined to ASME B16.5, matched to the pipe grade on your order for consistent material properties across the joint.

Size Range1/2″ – 16″
Pressure Class150 – 1500#
FacingRF, RTJ
MaterialsIncoloy 800H, Incoloy 825
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Incoloy Flanges — In Our Stockyard

Specification

Flange Types & Standards

TypeStandardDescription
Weld NeckASME B16.5High-temperature furnace & process piping
Slip OnASME B16.5Moderate-temperature connections
Blind FlangeASME B16.5Line & vessel opening closure
Technical Data

Specifications

  • Size Range1/2″ – 16″
  • Pressure Class150# – 1500#
  • FacingRaised Face, RTJ
  • Material GradesN08800 / N08810, N08825
  • ManufactureForged, machined to ASME B16.5
  • TestingPMI, Hardness, UT on request
  • CertificationEN 10204 3.1 Mill Test Cert.
  • PackingPalletised, bore-plugged for export

Technical Note — 800H and 800HT grades are supplied with controlled carbon content and grain size to meet the creep-rupture properties required by high-temperature ASME piping codes — confirmed on the mill certificate.

Where It's Used

Applications

High-Temperature Furnace Piping

Chemical Processing

Power Generation

Petrochemical

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