Accession Number : AD0423810

Title :   MECHANICAL PROPERTIES OF MILL-TREATED PLATES OF PROMISING HY-130/150 SUBMARINE-HULL STEELS.

Descriptive Note : Progress rept.,

Corporate Author : UNITED STATES STEEL CORP PITTSBURGH PA

Personal Author(s) : Manganello,S. J. ; Porter,L. F.

Report Date : 16 SEP 1963

Pagination or Media Count : 20

Abstract : As part of a program to develop an HY-130/150 base metal for submarine hulls, the Applied Re search Laboratory evaluated 12 mill-treated 1/2in. thick plates cross-rolled from production electric-furnace heats of four promising steels (HY-80, 3 3/4Ni-Cr-Mo-V, 5 1/4Ni-Cr-Mo-V, and 7 1/2Ni-Cr-Mo). The plates were quenched and tempered on the Homestead District Works 160-inchmill continuous heat-treating lines to at least two different yield strengths in the range 130 to 150 ksi. The results of mechanical-property tests indicated that the 1/2-in. thick milltreated plates of the four steels met the present yield-strength (130 to 150 ksi) and notch-toughness (50 ft-lb minimum energy absorption at O F) requirements for an HY-130/150 steel. The differences between the mechanical properties of the top and bottom locations in the plates were insignificant. However, the transverse Charpy V-notch energy absorptions of the HY-80 steel plates, which were cross-rolled 9.2 to 1, were 28 to 60 ft-lb lower than the corresponding longitudinal values. (Author)

Descriptors :   (*SUBMARINE HULLS, STEEL), (*STEEL, SUBMARINE HULLS), NICKEL ALLOYS, CHROMIUM ALLOYS, MOLYBDENUM ALLOYS, VANADIUM ALLOYS, MECHANICAL PROPERTIES, TENSILE PROPERTIES, TENSILE PROPERTIES, DUCTILITY, IMPACT SHOCK, HEAT TREATMENT, AUSTENITE, EXPERIMENTAL DATA

Distribution Statement : APPROVED FOR PUBLIC RELEASE