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- Newsgroups: rec.boats
- Path: sparky!uunet!brunix!brunix!jfh
- From: jfh@cs.brown.edu (John F. Hughes)
- Subject: Re: Question about zinc...
- Message-ID: <1992Nov17.123040.19685@cs.brown.edu>
- Sender: news@cs.brown.edu
- Organization: Brown University Department of Computer Science
- References: <1992Nov16.172432.12284@mprgate.mpr.ca> <1992Nov16.175434.22090@cs.brown.edu> <lgfpmoINN5q4@cronkite>
- Date: Tue, 17 Nov 1992 12:30:40 GMT
- Lines: 18
-
- In article <lgfpmoINN5q4@cronkite> billc@sextant.Eng.Sun.COM (Bill Courington) writes:
- >On the subject of zincs, my diver, a person of considerable
- >intelligence, experience and common sense, says that Mil. Spec.
- >zincs last noticeably longer than ordinary ones.
- >
- >No, I don't know how to tell them apart--the part of the boat
- >that's underwater is his business. But you might ask next
- >time you buy.
-
- One answer is to check with the company's literature to see. But if you
- can't get that (e.g., you're at the local shop getting a zinc two hours before
- dropping in the water), the following information comes form the West Marine
- Catalog: Canada Metals and Electro Guard both make zincs meeting the Mil-Spec,
- which requires that .005% iron be present in the zinc. They also note that the
- Electro-Guard zincs contain less cadmium, which means that they decay slower,
- but are probably slightly less noble than the Canada Metals ones.
-
- -John
-