C .3 max
Mn 2.0 max
S .025-.060 max
Si .5 max
Ni 63.0 min
Cu 28-34 max
Fe 2.5 max

Monel R405®

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

Lambor 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.

Monel R405® Applications

Thanks to its favorable mechanical and physical properties, Monel R405® nickel alloy is used in a wide range of industrial applications. Some of the more common applications for Monel R405® include:

  • Meter and valve parts
  • Fasteners
  • Screw machine products
  • Oil refinery piping
  • Heat exchangers
  • Nuclear fuel production
  • Generator tubing
  • High temperature heating coils
  • Crude oil transfer piping
  • Propeller and pump shafts

Contact Lambor Metals for Monel R405® Materials

Request a quote on the Monel R405® materials your application requires, or contact Lambor Metals to learn more.

“Monel R405®” is a registered trademark of Special Metals Corporation

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