Monel 400

Monel 400 is a nickel-copper, solid solution alloy with lesser components of copper and manganese. Only cold-working will harden it, making it suitable for subzero temperature applications. Additionally, it is applicable over a wide range of temperatures and environments. Like many nickel alloys, it is also highly resistant to corrosion.This metal is used in acidic and alkaline environments due to its resistance to substances such as sea water and other caustic solutions. It has wide applications in marine industries, as well as heat-exchangers. However, Monel 400 often required strengthening because of its low-annealed strength.Tempering is often required to improve hardness and elasticity. Monel 400 is additionally poor in the area of oxidation resistance; however, it is excellent under stress and corrosion in a variety of salt water, fresh water, brackish water and hydrochloric environments. It is also all but immune to chlorine. Monel 400 offers the same corrosion resistance as nickel, but often is chosen because of its reduced cost and much higher ability to withstand pressures and temperatures.

Marine Industry

Specifications – Monel 400

StandardMonel 400
UNSN04400
Werkstoff Nr.2.4360
ENNiCu30Fe
BSNA 13
GOSTМНЖМц 28-2,5-1,5
JISNW 4400
AFNORNU-30M

Physical Properties – Monel 400

Density 8.80 g/cm 3 / 0.318 lb/in 3
Melting Point 1300 -1350 (°C) / 2370 – 2460 (°F)
Poisson’s Ratio0.32
Specific Heat @ 70°F0.102 Btu/lb/°F
Thermal Conductivity @ 70°F151 Btu•in/h/ft2/°F
Electrical Resistivity @ 70°F0.511 μΩ•m
Curie Temperature21 – 49 (°C) / 70 – 120 (°F)
Annealed900 – 928 (°C) / 1650 – 1700 (°F)
QuenchRapid Air/Water

Chemical Composition – Monel 400

ElementComposition
Ni99.0 min
Cu0.25 max
Fe0.40 max
Mn0.35 max
C0.15 max
Si0.35 max
S0.01 max

Heat Exchangers

Monel 400 Products

Pipes & Tubes
Tubing
Seamless Pipe
Round Bar
Square Bar
Hex Bar
Sheet
Coil
Plate
Elbow / Bends
Fitting-Flanges-Reducer
Fitting-Flanges-Stubend
Fitting-Flanges-cap
Flanges-sorf-wnrf
Fitting-Flanges-fasteners
Wire-filler
Wire-coil
Wire-spool