everyone of them do. metal bats are illegal in professional baseball. But you use them in college, high school and below.
Metal most definitely, hence why Metal bats are not used beyond the college level. MLB studs are far too powerful to use anything but Wooden bats.
In the MLB, they use wooden bats and are able to break easier. In college, they use drop 3 bb core's and they're also metal, it's also harder to break. If you want to look at the bats, go to justbats.com and search bb core.
They used wooden bats in the 185s.
To Powerful I Guessyou would literally have a ridiculous amounts of HRs a game, not to mention the danger. I think it is time college goes to a wooden bat personally
Metal bats hit the ball further which is why at unprofessional levels of baseball they use metal but when you get to the MLB you have to use wood.
Players in Major League Baseball use wooden bats so the ball doesn't go as far when they hit it. If they used an aluminum bat, players could easily hit a home run.
Wood
Yes everything but wooden bats.
baseballs come off an aluminum bat faster and harder, than they do on a wooden bat. that is why in the MLB they make the players use wooden bats, to prevent serious injury. i myself perfer to use and practice with a wooden bat in the off season, because it teaches you to use the right mechanics to hit the ball harder and farther. but during games i use an aluminum ball bat, and during practice i use a wooden bat. i would restrain from using a carbon-fiber bat because they have a tendency to crack and break. but that is just my opinion on carbon fiber bats.
because there is friction between the bat and ball, this produces heat, a wooden bat isn't as good at conducting heat as a composite bat, therefore a composite bat will feel warmer after multiple use than a wooden one.
For one thing, colleges use metal bats and the MLB uses wood bats. That is about it.