Originally Posted by citabria
The melting point of lead free solder is 400F. I will be well below that. More worried about any other issues like durability.
In normal use, you never get solder anywhere near it's melting point. It gets *very* week (plastic) long before it melts. In the plastic state it will crack and chunks can fall off into the brew. The usage temperature ratings on the solder take this into account.