UNS N04400 — The classic Ni-Cu marine alloy — in continuous seawater service for over a century.
Nominal published values for the annealed condition. Certified heat lots ship with actual MTC values.
| Property | Value |
|---|---|
| Density | 8.80 g/cm³ |
| Min. yield strength (annealed) | 240 MPa |
| Min. tensile strength (annealed) | 550 MPa |
| Max service temperature | 480 °C |
| Nominal chemistry | Ni ≥ 63% · Cu 28–34% · Fe ≤ 2.5% |
DN15 – DN600 · SCH10 – SCH160 / XXS · seamless & welded · B366 · B16.9 · B16.5
Full fittings & flanges page →ASTM B366 · ASTM B564 · ASTM B462 · ASME B16.9 · ASME B16.5 · MSS SP-43
Confirm your standard →Pipe, fittings, bar, sheet, wire and forgings — consolidated into one PO with matching heats.
Monel 400 grade hub →Standard sizes per the fittings & flanges range (see supply range above) are stocked or on a frequent smelting schedule for Monel 400. Non-standard dimensions are made to order — confirm with your inquiry.
Every heat ships with EN 10204 3.1 MTC: ladle + product chemistry, mechanical results, dimensional data and heat number. Third-party witnessed 3.2 available on request.
Typical uses: Seawater valves, pumps & propeller shafts; Marine piping & heat exchangers. If your medium, temperature or pressure differs, our metallurgists verify grade selection free of charge before quoting.
Dimensions, quantity, standard — that is all we need. A named metallurgist replies with pricing, lead time and MTC sample.