Thank you for your reply. I was worried more about things like tin pest and solder brittleness rather than whiskers.
The context, well, a small series product that should be able to withstand (though not necessarily work during) low temperature storage and transportation.
Edit:
Since when has lead-free solder been described as "normal"?
Since the EU went batcrapcrazy and effectively banned Pb based solders.
Also, I meant normal as in off the shelf, no specific marking, standard, etc.