00000nam 2200000zi 4500 9.868311 CaOODSP 20221107162542 m o d f cr nn||||||||| 190213s1960 onca o f000 0 eng d CaOODSP eng rda CaOODSP eng fre M38-1/72-1960E-PDF M38-1/72 McDonald, R. D., author. The development of an improved steel for the production of propulsion shafting for naval vessels / R.D. McDonald & W.A. Morgan, Physical Metallurgy Division. Ottawa : Department of Mines and Technical Surveys, Mines Branch, 1960. 1 online resource (iv, 27 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier Research report ; R 72 Cover title. "October 1960." Imperfect copy: the back cover is wanting. Digitized edition from print [produced by Natural Resources Canada]. pt. I. An examination of steel currently in use -- pt. II. Modifications of this steel. "This report covers an investigation of properties obtainable in material currently in use for the production of propulsion shafting for naval vessels, and of the possible improvements attainable by increased manganese/carbon ratios and with low alloy additions. The initial purpose of the program was the improvement of impact properties without sacrificing other mechanical properties attainable in the currently used material. The results indicate that a very considerable improvement is obtainable, with accompanying improvements in tensile and fatigue strength and without any appreciable increase-in fatigue notch sensitivity when subjected to rotational bending fatigue stresses"--Abstract, page i. Includes abstract in French. gccst Steel Morgan, W. A., author. Canada. Department of Mines and Technical Surveys. Canada. Mines Branch. Canada. Physical Metallurgy Division. Research report (Canada. Mines Branch) R 72. (CaOODSP)9.855660 PDF 2.28 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-72-1960-eng.pdf 306833