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Monel - Model R-405 -High Performance Alloys
MONEL nickel-copper alloy R-405 (UNS N04405) 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 R-405 is used chiefly for automatic-screw-machine stock and is not generally recommended for other applications. The composition is shown in Table 1. Thermal expansion of alloy R-405 is shown in Table 2. The values for physical constants and other thermal properties of MONEL alloy 400 may be used for MONEL allov R-405 and are shown in Tables 3 and 4.
Mechanical Properties
The ranges of nominal mechanical properties of MONEL allov R-405 rod and bar are shown in Table 5. Fatigue strength of alloy R-405 in various conditions is shown in Table 6. Toughness of the material is shown by the impact data in Tables 7. 8 and 9. The tension and torsion data are from Catlin and Mudge. Table 10 gives compressive properties found for the alloy.
Alloy R-405 is approved as a material of construction under Section VIII (Pressure Vessels - Division 1) of the ASME Boiler and Pressure Vessel Code and in Section III, Nuclear Vessels, of the Code.