Transactions of the American Institute of Mining and Metallurgical Engineers (Incorporated). Volume 67 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ...has practically the same strength and ductility in two directions, whereas the steel shown in Figs. 4 and 5, which contains a greater amount of non-metallic inclusions, has strength and ductility only in one direction and is very weak and lacks toughness and ductility in the other direction. C. P. Perin, New York, N. Y.--I did not understand that was the question; I thought Mr. Morris asked as to the deleterious effect of sulfur, although the steel were forged in both directions, whether it would have a bad effect. Harry T. Morris.--I asked about the physical results, not the photomicrographs. It is not to be disputed that if the sulfur content is three times as high in one piece of steel as in another, the microscope might show more inclusions in a given area where the sulfur is high; but the thing that I wanted to show was that it does not necessarily follow that specimens from a piece of steel containing 0.04 per cent, or more sulfur will not give practically equal physical properties in both directions; that is, there is some treatment besides the elimination of sulfur that will give it equal physical properties in both directions. W. J. Priestley.--We have tried to heat-treat foreign inclusions out of steel. Some melting men say that it can be forged out and some say that it can be heat-treated out, but I have never seen it done, nor have I seen it broken up or scattered. Harry T. Morris.--The question of sulfur in proportions up to 0.04, 0.05, 0.06 per cent, is an important one in all kinds of steel, and there are differences of opinion among engineers, producers, and open-hearth men as to the effect of sulfur up to 0.05 or 0.06 per cent. Some engineers, open-hearth, and electric-furnace people, and steel producers will not admit that a steel with 0.0...