Hi Denis -
     
     Take a look at publication 656 Solder Alloy Data: Mechanical 
     properties of solders and soldered joints by the International Tin 
     Research Institute- it is a good apples-to-apples of Sn62 vs. Sn60 
     (sorry, no Sn63). One word of caution - comparison of solder alloy 
     properties needs to take into account the use environment, 
     stress/strain conditions, solder joint design, test method, etc - a 
     simple solder tensile strength comparison would be misleading. There 
     are many reports of the "improved" fatigue/creep properties of the 
     Sn62 alloy over either Sn60 or Sn63 - I have found that all three 
     alloys have equal properties in the use and design environments I deal 
     with (and I recommend that we buy the most cost effect choice). Good 
     Luck.
     
     
     Dave Hillman
     Rockwell Collins
     [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: Creep resistance of solder
Author:  [log in to unmask] at ccmgw1
Date:    7/23/97 1:06 PM


I have a customer who would like to read any published literature on 
comparisons between the creep resistance of Sn62 vs Sn63 in a thermal cycle 
environment.  Does anyone know of a good publication I can refer him to?
     
Thanks 
Denis Meloche
heraeus Cermalloy
610-825-6050  
     
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