ASTM B165
Ni-Cu alloy (Monel 400) seamless pipe and tube
Covers nickel-copper alloy (Monel 400, UNS N04400) seamless pipe and tube.
- Pipe & tube
- ASME SB-165
- 1 grade in stock range
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What to know before ordering to ASTM B165
The points that decide whether material to ASTM B165 is accepted at inspection.
- Tempers are annealed or stress-relieved; specify the one you need.
- Commonly used for seawater and HF acid lines.
- Fittings are B366 WPNC and flanges B564.
Grades and products we supply to ASTM B165
| Grade | Product | Designation on the certificate |
|---|---|---|
| Monel 400 | Pipe & Tube | ASTM B165 |
| Monel 400 | Pipe & Tube | ASTM B163 · B165 |
How ASTM B165 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 B165 — questions buyers ask
What does ASTM B165 cover?
Covers nickel-copper alloy (Monel 400, UNS N04400) seamless pipe and tube.
Which grades do you supply to ASTM B165?
Monel 400 — see the table on this page for the exact product and designation.
What is the difference between ASTM B165 and ASME SB-165?
ASME SB-165 is the ASME Boiler and Pressure Vessel Code (Section II) adoption of ASTM B165. 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