TECHNICAL INFORMATION FOR MONEL R-405
MONEL R-405 (UNS N04405) is the free-machining grade of Monel 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. Nickel R-405 is used chiefly for automatic screw-machine stock and is not generally recommended for other applications.