Accession Number : AD0456324

Title :   ELECTROCHEMICAL BEHAVIOR OF EXPERIMENTAL SUBMARINE-HULL STEELS IN SYNTHETIC SEA WATER.

Descriptive Note : Technical rept.,

Corporate Author : UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB

Personal Author(s) : Williams, E.

Report Date : 30 SEP 1964

Pagination or Media Count : 13

Abstract : Corrosion studies were conducted to determine the electrochemical properties of weldments of two 5Ni-Cr-Mo-V steels and HY-80 submarine-hull steel in synthetic sea water. Laboratory tests showed that there was no significant difference in corrosion potential among the base metals. The difference in corrosion potential between base metal and weld metal was much less for the 5NiCr-Mo-V steel weldments (experimental filler metal) than for the HY-80 weldments (E11018 filler metal). The cathodic polarization behavior of the base metals, weld metals, and weldments was essentially the same. After 124 hours of exposure, galvanic corrosion of weld metals coupled to base metals was much less for the 5NiCr-Mo-V steel weldments than for the HY-80 steel weldments. The results were confirmed by corrosion tests conducted at Wrightsville Beach, N. C., in flowing and nonflowing sea water with welded and nonwelded samples of HY-80 steel and experimental steels. With HY-80 steel, the weld metal corroded about twice as fast as the base metal. No galvanic effects were noted between weld metal and base metal for the 5Ni-Cr-Mo-V steel weldments. (Author)

Descriptors :   (*SUBMARINE HULLS, WELDS), (*WELDS, SUBMARINE HULLS), (*STEEL, WELDS), CORROSION, SEA WATER, ELECTROCHEMISTRY, WELDING RODS, NICKEL ALLOYS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE