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Solder Properties


These values are for some of the most common solders. With the push for lead-free (Pb-free) versions that conform the the RoHS1 initiative that will be in effect in Europe in the summer of 2006, new alloys have been developed that use little or no lead at all. For those application, this resource compiled by NIST2 and the Colorado School of Mines will be very helpful.
 


 

Solder Alloy
Melting Point (°C)Melting Point (°F)
5Sn-95Pb
307585
0.5Sn-92.5Pb-2.5Ag280536
Sn/5Sb243469
100Sn
232450
99.3Sn-0.7Cu227440
96.5Sn-3.5Ag
221430
52In-48Sn
118244
Sn/3.0Ag/0.5Cu219426
Sn/3.8Ag/1.0Cu217423
Sn/3.5Ag/1.0Cu/3Bi213415
50In-50Pb
209402
45Sn-55Pb
204400
55Sn-45Pb
193379
60Sn-40Pb
186368
63Sn-37Pb
183361
62Sn-36Pb-2Ag
179354
97In-3Ag
143289
Sn/57Bi139282

   1: Reduction of Hazardous Substances
   2: National Institute of Standards and Technology

 





Webmaster: Kirt Blattenberger, BSEE, UVM 1989