Discussion on "The applications of various steels" at the London Section of the Institution

MR. PINO: In opening the discussion on the range of steels we have heard of to-night, I shall confine myself to asking one or two questions. We engineers are always trying to do things faster and .faster, and I was interested in a point mentioned quite early on as to the introduction of phosphorus in low carbon steels for the purpose of obtaining free cutting qualities. We like high speed due to those qualities, but what would be the effect on the final product in, for instance, the component parts of a driving chain ? Would you as a consequence of the introduction of phosphorus get cracking in the case-hardening or would you get a less wearing quality ?