[SI-LIST] Re: Metal to Metal Question
- From: "Doug McKean" <dmckean@xxxxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Thu, 11 Oct 2001 10:20:41 -0700
Dave,
UL-1950 in their table of electrochemical potentials has
the cutoff at or below 0.6v between dissimilar metals.
From their chart, only two metals are allowed in contact
with just plain old Aluminum -
1. Zinc and Zinc alloys (0.2v)
2. 80Tin/20Zn on steel or Zn on Iron or Steel (0.15v)
Now, the Al/Mg alloy has several allowed
1. Ni on Steel (0.6v)
2. Cu and Cu alloys (0.5v)
3. Lead (0.2v)
to name a few.
- Doug McKean
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