Wilbert Smith Archives Files Box 1131 19 1131-19-p188

Document Text (OCR)

clus: The chemical analysis does not correspond to any commercial manganese steels as they contain either more carbon and silicon or some nickel and molybdenun. The alloy work hardened very heavily during the process of cutting which is inherent to such an alloy, The slipped lines were more pronounced once nital reagent was used. Since deep elec- tro-polishing was used in this instance, it indicates that the material went through heavy impact that caused the different planes to 6lip. Comments &...