"Ron Jones" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Martin Phillips wrote: >> In message <[EMAIL PROTECTED]>, Tony >> Brooks >> <[EMAIL PROTECTED]> writes >>> >>> What we really need now is a chemist to tell us a simple test to >>> differentiate between zinc, aluminium and magnesium. >> >> Sorry, you'll have to make do with a physicist. The PD between the >> surface of the anode and the steel of the hull should tell you the >> identity of the metal well enough to identify the gross composition. >> If I had a table of electronegativities handy I might be able to help >> more. Perhaps an electrochemist will turn up.... >> > > Agreed - Chemist no good here. We would take a chunk of it and dissolve > it to analyse. > I would think the best non destructive method would be XRF. > >
If they are still in v Good nick maybe you can read what is stamped on them? -- Brian from Sunny Suffolk
