The primary component of pot metal is zinc, but often the caster adds other metals to the mix to strengthen the cast part, improve flow of the molten metal, or to reduce cost. With a low melting point of 419 Â°C (786 Â°F), zinc is often alloyed with other metals including lead, tin, aluminium, and copper.
Although beer has a lower freezing point than water, it will freeze if left in a freezer for too long. The exact length of time varies depending on the beer.A frozen beer can sometimes be saved, but it usually isn't something you'd want to drink as it's often flat. However, all is not lost.he actual freezing point varies depending on the beer's content. Initially, some of the water freezes out of the solution. This is fractional freezing and is used in creating eisbock, a high-alcohol beer. However, be aware that as the water freezes, it expands; this can force the cap off a bottle.
You have to be super careful with beer, though. If it gets too cold, it can freeze and burst. Ditto for wine, cider and the like. They contain a lot of water and water expands when it freezes. A few hours in the mild cold probably won't destroy it, though. I'm not sure how cold beer will get if you store it for 3 hours in your trunk. It really depends on its staring temperature, how cold it is outside and how heated/insulated your trunk is . . . and how cold you like your beer, which is a whole other matter.