Hot rolled steel for rolling stock Part 1. Surface treatment prior to phosphating and painting (TM-SC-2)

Prior to 1974, steel sheet used in the construction of carriage bodysides conformed to B.R. Specification No 114 Class BB (1958) "specially flattened and oiled", with a minimum yield stress at the designers request. This was a cold rolled steel and scale free. In detail form, the steel was subjected...