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N04400 — ASTM Equivalent

Holding a datasheet that specifies N04400 (UNS)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of N04400?

N04400 is a UNS designation corresponding to ASTM B164 / UNS N04400 (Monel 400) (Monel 400) for industrial valve service. The full grade data is below - equivalence is by nominal chemistry and mechanical class, so confirm composition and heat-treat condition against the governing standard before substituting in critical service.

B164 / UNS N04400 (Monel 400)

Nickel Alloys

Monel 400 - both form.

Service temperature-196°C to +480°C
Nominal compositionNi ≥ 63%, Cu 28–34%, Fe ≤ 2.5%, Mn ≤ 2.0%, C ≤ 0.30%, Si ≤ 0.50%, S ≤ 0.024%.

Typical service: Hydrofluoric acid (HF) alkylation units in oil refineries; Seawater injection, produced water treatment, ballast water; Chlorine gas service at low concentrations

Also designated:N04400 [UNS]NiCu30Fe [EN]2.4360 [EN]
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

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Monel 400

Need valves in N04400 / its ASTM equivalent?

We supply B164 / UNS N04400 (Monel 400) valves - the N04400 equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.

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B164 / UNS N04400 (Monel 400) full grade pageMonel 400Equivalence MatrixAll 43 grades across 7 systemsDesignation lookup directoryEvery foreign designation indexed