SailNet Community - View Single Post - Strange corrosion
View Single Post
Old 12-25-2011
RichH's Avatar
RichH RichH is online now
Senior Member
Join Date: Jul 2000
Location: Pennsylvania
Posts: 2,695
Thanks: 9
Thanked 56 Times in 50 Posts
Rep Power: 15
RichH will become famous soon enough
The corrosion is zinc oxide which is 'extracting' from a poured casting of *pot metal* or *white metal* an inexpensive and dubious alloy of mostly zinc and varying % of tin, aluminum, magnesium, lead, etc. In the foundry trade this was also called *monkey metal*. This is a very weak alloy which quickly corrodes in the presence of water, especially seawater even if plated with nickel or chrome.

Last edited by RichH; 12-25-2011 at 09:20 PM.
Reply With Quote Share with Facebook