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:

1963-09-16

Pagination or Media Count:

20.0

Abstract:

As part of a program to develop an HY-130150 base metal for submarine hulls, the Applied Re search Laboratory evaluated 12 mill-treated 12in. thick plates cross-rolled from production electric-furnace heats of four promising steels HY-80, 3 34Ni-Cr-Mo-V, 5 14Ni-Cr-Mo-V, and 7 12Ni-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 12-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-130150 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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE