-Ferro== VANADIUM HE demands of modern engineering make the steel of a few years ago entirely inadequate for the requirements of today. T The strains and stresses and vibratory shocks that a locomotive, capable of whirling a heavy express train along at a hundred-mile-an-hour gait must withstand, were undreamed of by the steel makers of a generation ago. The high grade steel of today must have not only great elastic strength, but it must be able to withstand sudden and unexpected shocks, it must not deteriorate under vibrationit must be practically unbreakable. The steels of yesterday could not meet these require ments. They were strong and lasting under a steady load, but were apt to go to pieces under vibration or unexpected stress. As a result, mysterious accidents have occurred, rails have broken-vital parts of a locomotive have given way-automobiles have let down in the most unexpected placesmany lives have been lost-much property has been damaged. The steel has been at fault. It has stood up all right under severest static tests in the shop but has not had the vibratory resistance necessary to meet the demands of actual use. Something better was needed, and Vanadium has come along to supply the need. Vanadium has been known as a valuable alloy in steel making for many years, but the known supply has been so limited that its use has been experimental and academic rather than practical, and it is only within the last year or so that an Cold twist-showing ductility-Elastic limit of steel 110,000 pounds per sq in. adequate supply of Vanadium has been discovered. The American Vanadium Company has opened up the only big deposit of pure vanadium ore that has ever been found. It is located at the top of the Andes Mountains, 16,000 feet above the sea level and there is enough of it actually in sight to supply the steel making industry of America. for the next fifty years. An extensive reduction plant has been erected at Pittsburgh, Pa. AMERICAN VANADIUM COMPANY FRICK BUILDING PITTSBURGH Please mention the Review of Reviews when writing to advertisers |