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Rick,
These seem to be in the normal range for ductile copper. Typically, the
higher the elongation is, the lower the tensile strength, and vice-versa.
A problem would be in the elongation is say 33%, the tensile strength may
drop below 30,000 psi. While the deposit will not exhibit corner cracking,
barrel cracking may be evident.
Best regards,
Mike Carano
-----Original Message-----
From: Howieson, Rick [SMTP:[log in to unmask]]
Sent: Wednesday, August 09, 2000 3:04 PM
To: [log in to unmask]
Subject: [TN] Copper
We run copper plating tests monthly and send these to an independent
lab
for testing. The requirements are Tensile Strength 36,000 psi
minimum
and Elongation 6% minimum. My question to the experts is-- what if
our
readings were high, i.e. 43,000 psi and 20% elongation?
TIA,
Rick Howieson
General Technology Corp.
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