Monel R405® - UNS N04405

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Chemical Analysis


.3 max


2.0 max


.025-.060 max


.5 max


63.0 min


28-34 max


2.5 max

Monel R405® is a nickel-copper alloy that exhibits excellent corrosion resistance, high strength, and good weldability. It is resistant to sea water and steam at high temperatures, as well as salt, caustic solutions, alkalis, and sulfuric, hydrochloric, and hydrofluoric acids.
Monel R-405® provides good machinability, good mechanical properties across a broad temperature range (including subzero temperatures), and excellent resistance to chloride ion stress corrosion cracking. It can be hardened only via cold working.
Compositionally, Monel R405® is very similar to Monel 400®, but with greater sulfur content added to produce sulfide inclusions, which act as chip breakers during machining processes. Monel R405® can be fabricated, heat treated, and pickled via the same procedures used for Monel 400®.


Monel R405® nickel alloy meets a variety of industrial and international specifications, including:
  • UNS N04405
  • ASME SB-164
  • AMS 4674
  • QQ-N-281

Available Monel R405® Materials

Magellan Metals supplies Monel R405® nickel alloy in a variety of forms. We offer:
  • Monel R405® bar
  • Monel R405® wire
  • Monel R405® sheet
  • Monel R405® plate
  • Monel R405® forgings
  • Monel R405® pipe fittings
  • Monel R405® flanges
  • Seamless & welded Monel R405® pipe
  • Seamless Monel R405® tube & welded Monel R405® tube
Request a quote on the Monel R405® products you need, or contact us for more information.