File:Transactions (1871) (14579757317).jpg

Identifier: transactionsmining67amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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0.10 0.15 0.20 0.25 0.30 035 0.40 0.45 05O 055 0.60 065 070 075Ca rb on, per cent Fig. 3.—Average results of tests on M-in. round bars rolled from testingots of acid bessemer steel. formula. For open-hearth basic steel, Figs. 1 and 2, the manganeselines are plotted for every 0.05 per cent, from 0.35 to 0.95 per cent, andthe carbon lines for each 0.05 per cent, from 0.10 to 0.75 per cent. Forbessemer steel, Figs. 3 and 4, the manganese lines are plotted for every0.05 per cent, from 0.35 to 1.15 per cent, and the carbon limits for each0.05 per cent, from 0.10 to 0.75 per cent. Both the carbon lines and the DISCUSSION 255 manganese lines are comparatively similar in the basic open-hearth steel.In the bessemer steel, the large break in the carbon lines from 0.55 to
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Q35 0.40 Q45 0.60 0.55 0.60 0.65 0.70 0.75 080 0.85 0.90 0.95 1.00 L05 l.tO 1.15M a nganese, per cen-t- FiG. 4.—Results of carbon variations in steel shown in fig. 3. 0.60 per cent, is caused by a much higher silicon in steels of 0.60 per cent.,and over carbon that is used for springs, etc. 256 APPLICATION IN ROLLING OF EFFECTS OF CARBON ^ 55, ^ ^^ ^ o O CD fl c - . 0 c O O « OS CO o ti (3 c) Z! o. !Z nr M Q o ee nT o -o ^ a ^ -^ ^ Car r inthic ■H e Si 0 a 3 d °-^ § ct « en - ^Q> a> oQ ^ 3, a a-s ^ l-H CO ^ © « 5 _eS £ S ^ NITROGEN IN STEEL AND THE EROSION OF GUNS 257 Nitrogen in Steel and the Erosion of Guns* By H. E. Wheeler, Chicago, III. (Lake Superior Meeting, August, 1920) The work described was carried out during 1917 and 1918 atthe testing laboratory of Watertovvn Arsenal at the instigation of theNitrate Division and later with the concurrence of the Cannon Sectionof the Ordnance Department, U. S. A. The experiments follow threeprincipal lines of work: First,

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