Comparison of low alloy (2.1/4 Cr/1 Mo) M.M.A. electrodes, for the repair of BS11 normal quality rail (TM-MF-150)

The Civil Engineering Handbook No. 32 gives general instructions for track welding. Included in these instructions are procedures for the maintenance welding of part-welded crossings manufactured from BS11, Normal Quality (N.Q.) rail. Section B6 specifies a range of "low-alloy" electrodes to be used for this application. A low-alloy electrode is...