CORROSION OF ALLOYS IN HYDROSPACE —- 189 DAYS AT 5,900 FEET 
Technical Note N-1224 
YF 38.535.005.01.004 
by 
Fred M. Reinhart and James F. Jenkins 
ABSTRACT 
A total of 525 specimens of 60 different alloys were exposed at a 
depth of 5,900 feet in the Pacific Ocean for 189 days in order to 
determine the effects of the deep ocean environments on their corrosion 
resistance. 
Corrosion rates, types of corrosion, pit depths, and stress corro- 
sion cracking resistance are presented. 
The materials evaluated were aluminum alloys 5086-H34, H32 and 
H112 and 6061-T6, and welded and unwelded 5083-H113 and 7039-T64; 
welded nickel alloys Ni-Cu 400 and K-500, Ni-Cr—Fe 600 and 718, Ni-Cr- 
Mo 625, and Ni-Fe-Cr 825; and wire ropes Ni-Cr-Mo 625, Ni-Co-Cr-Mo, 
Ni-Mo-Cr "C'' and Ni-Cr-Mo-103; three high strength-low alloy steels; 
six high strength steels; two austenitic cast irons; three stainless 
steels; two precipitation hardening stainless steels; and stainless 
steel and modified stainless steel wire ropes; and seven welded titan- 
ium alloys. 
Approved for public release; distribution unlimited. 
ii 
