ASTM B423
Ni-Fe-Cr-Mo-Cu alloy (825) seamless pipe and tube
Covers Alloy 825 (UNS N08825) and related Ni-Fe-Cr-Mo-Cu alloys as seamless pipe and tube, cold-worked or hot-finished and annealed.
- Pipe & tube
- ASME SB-423
- 1 grade in stock range
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What to know before ordering to ASTM B423
The points that decide whether material to ASTM B423 is accepted at inspection.
- Welded Alloy 825 pipe is ordered to ASTM B705 instead.
- Pipe dimensions usually follow ASME B36.19 schedules.
- Fittings in the same alloy are B366 WPNICMC; flanges are B564.
Grades and products we supply to ASTM B423
| Grade | Product | Designation on the certificate |
|---|---|---|
| Inconel 825 | Pipe & Tube | ASTM B423 |
| Inconel 825 | Pipe & Tube | ASTM B163 · B423 |
How ASTM B423 fits into an order
A purchase order line is only complete when it names the material standard, the dimensional standard and the inspection document. Miss one and the mill, the inspector and the buyer can each read the order differently.
Related standards
ASTM B423 — questions buyers ask
What does ASTM B423 cover?
Covers Alloy 825 (UNS N08825) and related Ni-Fe-Cr-Mo-Cu alloys as seamless pipe and tube, cold-worked or hot-finished and annealed.
Which grades do you supply to ASTM B423?
Inconel 825 — see the table on this page for the exact product and designation.
What is the difference between ASTM B423 and ASME SB-423?
ASME SB-423 is the ASME Boiler and Pressure Vessel Code (Section II) adoption of ASTM B423. The technical requirements are usually identical to a specific ASTM edition; pressure-equipment codes call for the ASME designation, and most mill certificates show both.
Do you supply certificates to this standard?
Yes. Material is supplied with mill test certificates to EN 10204 3.1 showing the standard, grade and heat number; 3.2 with third-party inspection on request.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026