Eutectic only applies to the 37/63 solder alloy. Eutectic infers two things - 1) it is the alloy with the lowest temperature melting point, and 2) there is no "plastic state", meaning it goes directly from a liquid to a solid with no plastic state in between.
The second point is the most important to us who solder - it will prevent 'cold solder' connections which can result from movement while the solder is cooling. If there is movement during the plastic state, the solder may crystallize and have poor conductivity as a result. For those purchasing solder, the 37/63 alloy is preferred over the 60/40 alloy for this very reason. 73, Don W3FPR Gil Cross wrote: > At the eutectic, the solidus and liquidus temps are the same > Gil > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
