Nickel Alloys · Flanges · ASTM B564 N06625
Inconel 625 Flanges
In short: Inconel 625 flanges forged to ASTM B564 N06625 are used on seawater, sour and chemical piping in 625 or 625-clad systems.
- N06625
- UNS number
- 8.44
- density, g/cm³
- 3.1 / 3.2
- EN 10204 certificates
- 6
- Inconel 625 product forms
Why this combination
Why Inconel 625 in flanges
Flanges in sour or seawater service must match the pipe's corrosion resistance at the face.
Weld-neck and blind types to ASME B16.5 are most common.
Specification
How to specify Inconel 625 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
- Specification
- ASTM B564 N06625
- UNS
- N06625
- EN / W.Nr.
- 2.4856
- Dimensions
- ASME B16.5 / B16.47
Sizes and weights
Inconel 625 flanges sizes, weighed at 8.44 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
Inconel 625 composition
- UNS
- N06625
- EN / W.Nr.
- 2.4856 · NiCr22Mo9Nb
- Density
- 8.44 g/cm³
- PREN
- ≈ 51
| Element | Limit, % | Why it matters |
|---|---|---|
| Ni | 58.0 min | |
| Cr | 20.0 – 23.0 | |
| Mo | 8.0 – 10.0 | |
| Nb + Ta | 3.15 – 4.15 | |
| Fe | 5.0 max | |
| C | 0.10 max | |
| Mn | 0.50 max | |
| Si | 0.50 max | |
| Al | 0.40 max | |
| Ti | 0.40 max | |
| Co | 1.0 max |
Limits per ASTM B443; other product forms and specifications differ slightly. Your order's specification and edition govern.
Questions
About Inconel 625 flanges
What spec covers 625 flanges?
ASTM B564 N06625.
Are 625 flanges NACE compliant?
They can be supplied to NACE MR0175 when specified.
From enquiry to dispatch
How a Inconel 625 flanges order runs
- 01 EnquiryGrade, specification, size, quantity
- 02 ReviewChecked against your standard
- 03 InspectPMI, dimensions, TPI if required
- 04 CertifyEN 10204 3.1 / 3.2, heat traceable
- 05 ShipPacked and documented for the destination
Need Inconel 625 flanges?
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