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Analysis of Findings of Four Tank-Car Accident Reports

Report Number: FRA-OR&D 75-50
Author(s): Interrante, C. G., G. E. Hicho and D. E. Harne
Corporate Author: National Bureau of Standards
Corporate Report Number: NBSIR 75-655
Date of Publication: 1975-01
Pages: 76
Contract: DOT-AR-40008
PB Number: PB251097

A comprehensive overview of the findings and metallurgical analyses of tests conducted at the National Bureau of Standards on samples of tank-car materials submitted by the Federal Railroad Administration is presented. The submitted samples were taken from tank cars which had been involved in accidents during the period January 1970 to January 1971. The testing conducted during the metallurgical analyses included full chemical analyses, ambient temperature tensile tests on longitudinal and transverse specimens, quantitative metallography to determine ferrite grain size, peralite colony size, and inclusion content, size, and shape, hardness tests, bend tests on longitudinal and transverse specimens, and a very comprehensive program of impact testing, which is covered in a separate report on Impact Properties.

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