no-- that sound right.. remember, "freezing" is going from a liquid state to a solid state. Water does it at 32 F., or 0 c.--- i don't think i have ever seen liquid brass, and even when soldering, a lead solder is used--
what we are concerned with, is some materials, even after they have become solid, expand and contract. steel does it noticable.. since it is very elastic for a metal.. and bridges are "higher" in the winter than they are in the summer.. and bridges all have expansion joints... even little 50 foot long highway overpass bridges..
what i think is being discussed, is brass does not expand or contract in a normal range of tempuatures.. say from -10 C. to 150 C. -- (though normal could be defined in other ways, but from sub zero to 20 lbs of steam is a pretty wide range.. yet one we might encounter in our daily lives (a very cold freezer, to a pressure cooker, or steam radiator.) but a metal lid to a jar will get a bit looser if you hold it under hot tap water...
