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In studying the literature on the properties of carbon and low-alloy steels at low temperatures (1), it will be noted that there does not appear to be particularly close agreement among different investigators on the effect of composition on transition temperature. Two of the most comprehensive reports (2, 3) give a clear indication of the effects of carbon and of manganese, although there is considerable doubt as to whether the specific quantitative values for each increment of carbon and of manganese derived from results in one of these papers would apply to commercial steels except under very limited conditions. The investigation reported here was undertaken to determine the energy-temperature relations for a number of carbon-manganese steels as one phase of a study of the effects of welding on the transition temperature. The objectives were, first, to attempt to resolve differences in published results of other studies and, second, to aid in the selection of a limited number of compositions for welding studies.
Armstrong, T. N.
The International Nickel Co., Inc., New York, N. Y.
Warner, L. W.
Watertown Arsenal, Watertown, Mass.