Accession Number:

AD0604870

Title:

DEVELOPMENT OF AN HY-130/150 WELDMENT

Descriptive Note:

Quarterly progress rept. no. 4, 1 Apr-30 Jun 1964

Corporate Author:

UNITED STATES STEEL CORP MONROEVILLE PA

Report Date:

1964-07-01

Pagination or Media Count:

44.0

Abstract:

Laboratory development studies on the base metal were completed, and the results indicate that the 5Ni-Cr-Mo-V steel appears to be the optimum composition for an HY-130150 steel. A second 80-ton electric-furnace heat, a 40-ton basic-oxygen-steelmaking OSM heat, and a 40-ton OSM vacuum-carbon- deoxidized heat of the 5Ni-Cr-Mo-V steel have been melted and are being evaluated. Ingots have also been cast from an OSM heat of the 5Ni-Cr-Mo-V steel for consumable-electrode remelting and for processing to a ring forging, and plans for producing castings and structural shapes have been formulated. The studies should indicate the suitability of the 5Ni-Cr-Mo-V steel for the various types of products required for submarine-hull construction, and should establish the composition ranges for the various 5Ni-Cr-Mo-V steel products. Laboratory base-metal weldability studies, which defined composition limits for the 5Ni-Cr- Mo-V steel, have been completed. As anticipated, the heataffectedzone crack susceptibility of the first production heat of the 5Ni-Cr-Mo-V was low, and its heat-affected-zone toughness was high. Covered-electrode and MIG weld metals of improved strength and toughness have been developed, and work to develop an all- position technique for depositing MIG filler metals is progressing on schedule.

Subject Categories:

  • Couplers, Fasteners and Joints
  • Submarine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE