Accession Number : AD0626586

Title :   EFFECT OF DEEP OCEAN ENVIRONMENTS ON THE CORROSION OF SELECTED ALLOYS.

Descriptive Note : Technical note,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Reinhart,Fred M.

Report Date : OCT 1965

Pagination or Media Count : 32

Abstract : This is a partial report covering eight materials selected as representative of the different classes of alloys exposed in the Pacific Ocean at depths ranging from 2340 to 5640 feet for periods of time ranging from 123 to 1064 days. Aluminum alloy, 5086-H34, was attacked by intergranular corrosion which was manifested by pitting and edge penetration. It was also attacked by crevice corrosion. Its corrosion rates and pit depths increased with time of exposure. Copper alloy No. 715, alloy steel A1S1 4130 and the extra high strength low alloy steels corroded uniformly; their corrosion rates decreasing with increasing time of exposure regardless of depth. The nickel base alloy, Hastelloy C, was uncorroded. The austenitic stainless steel, 20-CB, also was uncorroded except for crevice corrosion after 197 days of exposure at a depth of 2340 feet. No significant effect of pressure on the corrosion behavior of these alloys is evident from the data presented. (Author)

Descriptors :   (*ALLOYS, CORROSION), ALUMINUM ALLOYS, COPPER ALLOYS, NICKEL ALLOYS, STAINLESS STEEL, CORROSION RESISTANT ALLOYS, DEEP SUBMERGENCE, PRESSURE, LIQUID IMMERSION TESTS, SEA WATER, AUSTENITE, STEEL

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE