"Jeff" wrote in message
...

Train these kids in proper workbench habits and shop safety - first. The
lead-free initaitve is real and in the US we will be working with a
"mixed
environment" (repair of older equipment with compnents that may not be
able to handle high temperatures (70 to 90 degrees higher depending upon
formulation used) required for lead-free solders.


It's more like 15 to 20 degrees C higher for lead free solder.
Jeff


I was referencing F, you are quoting C. I think you math is a bit low for C
(63/37 eutectic is 183 degrees C and Tin/Silver and Tin/Copper eutectics are
at 221 and 227.
Here is the solder alloy temperature chart (Kester's) - so everyone can see
the various formulations, as well as pure tin melting point and the
lead-free formulations.
http://www.kester.com/en-us/technical/alloy.aspx

gb