I wouldn't say that less than 12% is necessarily low. The standard spec used to be until recently min. 6%, and for most applications 10% would be more than adequate.
Tim Reeves
-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Tuesday, December 03, 2002 1:04 PM
Subject: Re: via cracking

Russ,

I would add just one more cause.  If the copper has a low elongation, less than 12%, it can be brittle enough to crack.

Larry
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