Accession Number : AD0621492

Title :   STRESS CORROSION CRACKING IN MARINE SERVICE,

Corporate Author : PACIFIC NAVAL LAB ESQUIMALT (BRITISH COLUMBIA)

Personal Author(s) : Peters,B. F. ; Carson,J. A. H. ; Barer,R. D.

Report Date : 1965

Pagination or Media Count : 11

Abstract : The report explains what stress corrosion cracking is, factors necessary, and how it can be recognized. Gives several examples of stress corrosion cracking occurring on several engineering metals used in naval service: high (35% or more) zinc brasses in sea water and atmosphere; high (12%) aluminum bronze in sea water; aluminum silicon bronze in steam condensate; high magnesium (10%) and copper (4%) aluminum alloys in sea water and atmosphere; mild steel in caustic boiler water; austenitic stainless steel in hot, high chloride environments; and martensitic stainless steel in both chloride and condensate type hot environments. Shows how bird droppings and other excreta can be source of ammonia required for stress corrosion cracking of copper base alloys. Equipment failures discussed include tubing, bolts, screws, propellers, valves, hand rail stanchion,pump arts, clamps, pipe coupling, and gaskets. (Author)

Descriptors :   (*CORROSION, MARINE ENGINEERING), (*FRACTURE(MECHANICS), CORROSION), CANADA, STRESSES, BRASS, ZINC ALLOYS, ALUMINUM ALLOYS, BRONZE, MAGNESIUM ALLOYS, COPPER ALLOYS, STEEL, STAINLESS STEEL, NAVAL EQUIPMENT, CORROSIVE LIQUIDS, MICROSTRUCTURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE