. American engineer and railroad journal . g the day. No dues are demanded from mem-bers and a very small charge is made for the use of the dormi-tories and bath rooms. Outside of this, which hardly covers themaintenance charges of these quarters, the railroad companypays all the bills. These clubs are proving to be very popularand are said to be an excellent thing from all points of view. 46 S AMERICAN ENGINEER AND RAILROAD JOURNAL. VANADIUM STEEL.* By Mr. J. Kent Smith.! When some years ago the statement was recorded that the ad-dition of vanadium to steel strengthened the latter, the asseve
. American engineer and railroad journal . g the day. No dues are demanded from mem-bers and a very small charge is made for the use of the dormi-tories and bath rooms. Outside of this, which hardly covers themaintenance charges of these quarters, the railroad companypays all the bills. These clubs are proving to be very popularand are said to be an excellent thing from all points of view. 46 S AMERICAN ENGINEER AND RAILROAD JOURNAL. VANADIUM STEEL.* By Mr. J. Kent Smith.! When some years ago the statement was recorded that the ad-dition of vanadium to steel strengthened the latter, the assevera-tion did not appeal much to practical man for many reasons, twoof which were: that vanidium was looked upon as an exceed-ingly rare metal which was quite inaccessible tor use in indus-trial operations, and that the extraordinary properties whichvanadium conferred on steel in addition to strengthening it werenot even hinted at; in fact, it is only in very recent times thatthe chief benefit conferred upon steel by the correct addition of. 1 2 a 4 i> e Deflection Comparative Tests on Vanadium and Carbon Steel Springs,the American Locomotive Company. Tested by The Vanadium spring was tested: 1. To 68,700 lbs. with 34 centers. 2. To 92,000 36 3. To 94,000 36 On second test elastic limit was reached at 85,000 lbs. or 234,600 lbs. fibre stress with permanent set of . third test was repeated three times without the least variation from recorded D. Vanadium Spring Steel. The Carbon spring was tested: 1. To 44,000 lbs. with 36 centers. 2. To 89,280 • 36 3. To 84,520 36 4. To 89,280 36 _ On second test, elastic limit was reached at 65,000 lbs. or fibre stress with permanentset of third test, it took an additionalset of .26, and on fourth test,plates 1, 2, 3, 8, 9, 10, 11, 12failed at the center. Static test on piece cut from leaf of spring: Elastic limit 227,100 Ultimate strength 237,500 Ratio 96% Elongation. 2 10% Contraction of area 35% FIG
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
