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Nickel Alloys · Flanges · ASTM B564 N08825

Incoloy 825 Flanges

In short: Incoloy 825 flanges forged to ASTM B564 N08825 are used on sour-gas, acid and seawater-cooled piping.

N08825
UNS number
8.14
density, g/cm³
3.1 / 3.2
EN 10204 certificates
6
Incoloy 825 product forms
Quote Incoloy 825 flanges →Sizes and weights
Incoloy 825 flanges: specification designationsASTM B564 N08825 DESIGNATIONS FOR INCOLOY 825 FLANGES ASTM B564 N08825 Marked on every piece with heat number and size; matched to the 3.1 / 3.2 certificate.
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why Incoloy 825 in flanges

Resistant to sulphuric and phosphoric acidsImmune to chloride SCC at typical process temperaturesTitanium-stabilised against sensitisationWidely used in sour oil and gas service

Flanges in sour service need the same NACE compliance as the pipe.

Weld-neck flanges to ASME B16.5 are most common.

Specification

How to specify Incoloy 825 flanges

NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request

Incoloy 825 flanges ASTM B564 N08825
Incoloy 825 flanges: ASTM B564 N08825
Specification
ASTM B564 N08825
UNS
N08825
EN / W.Nr.
2.4858
Dimensions
ASME B16.5 / B16.47

Sizes and weights

Incoloy 825 flanges sizes, weighed at 8.14 g/cm³

Other sizes on request. For general flanges information, such as manufacturing routes and end finishes, see the flanges guide.

NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request

Chemistry

Incoloy 825 composition

UNS
N08825
EN / W.Nr.
2.4858 · NiFe30Cr21Mo3
Density
8.14 g/cm³
PREN
≈ 30 – 33
Incoloy 825 chemical composition, % (ASTM B424)
ElementLimit, %Why it matters
Ni38.0 – 46.0
Fe22.0 min
Cr19.5 – 23.5
Mo2.5 – 3.5
Cu1.5 – 3.0
Ti0.6 – 1.2
C0.05 max
Mn1.0 max
Si0.5 max
Al0.2 max

Limits per ASTM B424; other product forms and specifications differ slightly. Your order's specification and edition govern.

0%10%20%30%40%50% Ni Cr Mo Cu Ti Mn
Main alloying elements of Incoloy 825: bars show the permitted range (ASTM B424).

Questions

About Incoloy 825 flanges

What spec covers 825 flanges?

ASTM B564 N08825.

Are 825 flanges supplied with NACE statements?

Yes, when specified.

From enquiry to dispatch

How a Incoloy 825 flanges order runs

  1. 01 EnquiryGrade, specification, size, quantity
  2. 02 ReviewChecked against your standard
  3. 03 InspectPMI, dimensions, TPI if required
  4. 04 CertifyEN 10204 3.1 / 3.2, heat traceable
  5. 05 ShipPacked and documented for the destination

Need Incoloy 825 flanges?

Send size, quantity, specification and destination. We reply with availability, certificates and delivery.

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