. Electric railway journal . elastic limit in compression, henotes that while it would appear that the rail com-pressed the least would wear longest, where the dif-ference in compression is indicative of greater elas-ticity without sacrifice of ultimate strength, it is withinreason to the good. In speaking of chemical compositions, he notes thatthe greater durability of the hard rail as comparedwith the soft, speaks for higher carbon, and thatcarbon is practically the same in the West End rail asin the hard rail, the real point of difference here beingin lower phosphorus and higher manganese,
. Electric railway journal . elastic limit in compression, henotes that while it would appear that the rail com-pressed the least would wear longest, where the dif-ference in compression is indicative of greater elas-ticity without sacrifice of ultimate strength, it is withinreason to the good. In speaking of chemical compositions, he notes thatthe greater durability of the hard rail as comparedwith the soft, speaks for higher carbon, and thatcarbon is practically the same in the West End rail asin the hard rail, the real point of difference here beingin lower phosphorus and higher manganese, it beingwell known that low phosphorus accompanied by anincrease in manganese conduces to greater then states that cost here enters due to manufac-turing difficulties in lowering phosphorus in standardBessemer steel and adds that it would cost $2 per tonmore than the $25 per ton which was the average pricefor girder rails. (This is of interest at the presenttime in view of war prices of about $70 per ton with no. FIG. 8—RAIL SECTIONS ANDWEAR CONTOURS SUPERIM-POSED FOR COMPARISON(FULL SIZE) Co. 90-206 P. S. Co. 90^-222 tests Mr. Moxham says in regard to specific gravity:It will be found a law that where specific gravity isreferred arbitrarily to the iron and the metalloidsdeducted, the specific gravity will tally closely withwhat is to be expected from the actual use of the metal,, . and it is interesting to note the very close delivery promise.) The low phosphorus question isnow apparently well settled in present practice, due tothe use of open-hearth steel, and it is also to be notedthat present specifications generally ignore sulphur,probably because it runs under per cent in basicopen-hearth pig iron. January 26, 1918 Electric Railway Journal 171 Table I—Averag es of Tests of Rail Steel Taken fbom Mr. MoxhamsPapeb of 1898 Table II—Averages of Chemical Analyses from Mr. Moxhams Paper,Compared with Am. El. Ry. Asso. Std. Class B. Tens
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