Abstract
The alleged conservatism of the railroads toward changes in the materials going into equipment is explained by their strict adherence to a safety-first policy. The subject matter of the paper is discussed under three main headings of manufacturing methods, materials, and specifications. It is pointed out that, in order to improve a given part, changes in design should be considered which would minimize the chances for defects due to improper or improperly controlled manufacturing practices. Next, a plea is made for better steel-mill practice, closer control, and better inspection. After all these points have been considered, further increases in strength and ductility can be obtained through the use of alloying elements. Attention is given to the steps taken in improving some parts which have previously been a source of serious concern to the railroads.
