Accession Number:

AD0292700

Title:

INVESTIGATION OF THE NOTCH-TOUGHNESS PROPERTIES OF ABS SHIP PLATE STEELS

Descriptive Note:

Final rept.,

Corporate Author:

SHIP STRUCTURE COMMITTEE WASHINGTON D C

Personal Author(s):

Report Date:

1962-10-01

Pagination or Media Count:

35.0

Abstract:

SR-125 was initiated for the purpose of surveying notch-toughness properties of ship plate procured by various shipyards for merchant ship construction under ABS rules. The main objective was to determine the extent to which post World W r II steels have been improved, based principally on a comparison of their Charpy V-notch properties with those established by the National Bureau of Standards for fractured plates from World War II ships. The initial part of the program prior to 1956 covered plate procured to the requirements of the 1948 ABS Rules and included 37 samples of Class A, 81 of Class B and 14 of Class C. The results of the survey indicate that since the 1956 revision of the AB Rules for Ship Steel, the range and average transition temperatures 15 ft-lb Charpy V for the new material have been found to be -40 to 29 F and 2 F, respectively, for ABS Class B plates, and -46 to 13 F and -13 F, respectively, for ABS Class C plates, as compared with an average of 90 F for World War II fracture-source plates and 68 F for fracture-through plates. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE