Nickel Alloys · Fittings · ASTM B366 WPNCMC
Inconel 625 Fittings
In short: Inconel 625 butt-weld fittings to ASTM B366 WPNCMC complete 625 piping in seawater, sour-gas and chemical 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 fittings
Matching 625 fittings avoid galvanic and corrosion weak points at elbows and tees.
Use 625-type filler for welds.
Specification
How to specify Inconel 625 fittings
Butt-weld ½" – 48" (larger fabricated to order) in schedules matching the pipe; socket-weld and threaded ⅛" – 4" in Class 2000, 3000, 6000 and 9000
- Specification
- ASTM B366 WPNCMC
- UNS
- N06625
- EN / W.Nr.
- 2.4856
- Butt-weld
- B366 WPNCMC, ASME B16.9
Sizes and weights
Inconel 625 fittings sizes, weighed at 8.44 g/cm³
Other sizes on request. For general fittings information, such as manufacturing routes and end finishes, see the fittings guide.
Butt-weld ½" – 48" (larger fabricated to order) in schedules matching the pipe; socket-weld and threaded ⅛" – 4" in Class 2000, 3000, 6000 and 9000
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 fittings
What is WPNCMC?
The B366 fitting designation for alloy 625.
Are 625 fittings stocked?
Common sizes; others to order.
From enquiry to dispatch
How a Inconel 625 fittings 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 fittings?
Send size, quantity, specification and destination. We reply with availability, certificates and delivery.