Monel

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Monel

Monel 400: The most common Monel alloy, known for its high strength and resistance to corrosion in various environments.
Monel K-500: A precipitation-hardened version of Monel 400 with added aluminum and titanium, which increases strength and hardness.
Primary Elements: Monel alloys primarily consist of nickel (about 65-70%) and copper (20-29%).
Additional Elements: They may also contain small amounts of iron, manganese, carbon, and silicon.



Grade UNS Number Composition (%) Density (g/cm³) Melting Point (°C) Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Applications
Monel 400 N04400 Ni 63, Cu 28-34, Fe ≤ 2.5, Mn ≤ 2.0 8.80 1300-1350 480-620 170-345 30-40 Marine engineering, chemical and hydrocarbon processing, heat exchangers
Monel 401 N04401 Ni 44-54, Cu 28-34, Fe ≤ 2.5, Mn ≤ 2.0 8.80 1300-1350 480-620 170-345 30-40 Electrical and electronic applications, spark plugs
Monel 404 N04404 Ni 52-57, Cu 38-34, Fe ≤ 2.5, Mn ≤ 2.0 8.80 1300-1350 480-620 170-345 30-40 Electronic components, resistance-welding electrodes
Monel R-405 N04405 Ni 63, Cu 28-34, Fe ≤ 2.5, Mn ≤ 2.0, S 0.025-0.060 8.80 1300-1350 480-620 170-345 30-40 Fasteners, pump and valve components, high-speed machining
Monel K-500 N05500 Ni 63, Cu 27-33, Al 2.3-3.15, Ti 0.35-0.85, Fe ≤ 2.0, Mn ≤ 1.5 8.44 1350-1400 965-1100 690-827 20-30 Springs, valve seals, pump shafts, oil and gas applications, marine service


Corrosion Resistance: Monel alloys are highly resistant to corrosion by many agents, including seawater, acids, and alkalies.
Strength: They maintain high strength over a wide range of temperatures.
Ductility: Monel alloys are easily fabricated and welded, maintaining their mechanical properties even after fabrication.



EN Number Alloy Designation Composition (%) Density (g/cm³) Melting Point (°C) Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Applications
EN 2.4360 Monel 400 Ni 63.0-70.0, Cu 28.0-34.0 8.83 1350-1400 550-750 230-345 35-50 Marine environments, chemical processing, oil and gas
EN 2.4375 Monel K-500 Ni 63.0-70.0, Cu 27.0-33.0, Al 1.0-1.5, Ti 0.35-0.85 8.82 1350-1400 700-1100 480-690 10-25 Aerospace, oil and gas, marine environments
EN 2.4380 Monel 401 Ni 60.0-65.0, Cu 28.0-34.0, Fe ≤ 4.0 8.83 1350-1400 500-720 220-340 30-50 Marine environments, chemical processing, aerospace
EN 2.4377 Monel R-405 Ni 63.0-70.0, Cu 27.0-34.0, Fe 1.0-3.0 8.82 1350-1400 550-750 230-345 25-45 Marine environments, chemical processing


Longevity: The combination of strength and corrosion resistance leads to long service life in harsh environments.
Versatility: Suitable for a wide range of industrial applications.
Reliability: Consistent performance under extreme conditions, such as high pressures and temperatures.
Monel is a valuable material for industries requiring high-performance, corrosion-resistant materials. Its unique properties make it ideal for demanding applications, despite its higher cost and machining challenges.