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Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsMaterial Select...Material Select...Suitability of Anodized T6061-6 Aluminum in the oceanSuitability of Anodized T6061-6 Aluminum in the ocean
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6/4/2003 9:00 AM
 
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We require electronics housings to survive for 7 years continuous in sea water at 375 meters depth. The housing material must have relatively good thermal conductivity, which may eliminate titanium as an option. The housing will have two titanium bulkhead connectors, which will have to be isolated from the housing, if dissimilar. Anodized T6061-6 aluminum has been suggested, but we are concerned about potential scratches in the coating. Does anyone have any experience or suggestions related to this.
 
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6/4/2003 9:00 AM
 
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Phil: The ambient temperature of the seawater and the potential for bio growth somwhat influences material selection in seawater. However, we have investigated electrical component housings in seawater (for sonar applications) and crevice corrosion is a damage mechanism of major concern. As crevice corrosion is design dependent, it is difficult to verify whether crevice corrosion will be a concern with your installation or not. You should consider the super austenitic stainless steels, i.e., AL6XN, 254 SMO, etc., as alloys that possess excellent resistance to seawaters with competative economics to the nickel based alloys. Hope this helps! David Hendrix The Hendrix Group Inc.
 
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