Ni-Cu 405 (Monel®) (UNS N04405)
Alloy 405 (Monel®) is a ductile nickel-copper alloy with resistance to a variety of corrosive conditions. The alloy is most frequently applied in a range of environments ranging from mildly oxidizing through neutral and to moderately reducing conditions. An additional application area of the material is in marine environments and other non-oxidizing chloride solutions.
Alloy 405 is the free-machining grade of alloy 400. Its greater sulfur content enhances machinability. It has essentially the same corrosion resistance and physical properties as alloy 400, but a slightly different range of mechanical properties. Alloy 405 is used chiefly for automatic- screw-machine stock and is not generally recommended for other applications. Due to the sulfur addition for free machining, welding is not possible for Alloy 405.
Chemical Composition (wt%) limits as specified in ASTM B164*
*Maximum, unless range is indicated
Physical properties for Alloy 405
|Modulus of Elasticity, psi||26 x 106|
|Coefficient of Thermal Expansion, 68-212˚F, /˚F||7.7 x 10-6|
|Thermal Conductivity, Btu/ft hr ˚F||14|
|Specific Heat, Btu/lb ˚F||0.10|
|Electrical Resistivity, Microhm-in||20.0|
Mechanical property requirements as specified for annealed product in ASTM B164
|Yield Strength, min. (ksi)||25|
|Tensile Strength, min. (ksi)||70|
|Elongation, min. (%)||35|
Typical standards for Alloy 405