No, they use bats made of wood, either ash or maple.
Maple, ash, birch
Baseball bats used in MLB are made from ash and maple.
The use of Ash Bats in the MLB are declining because of the relatively recent rise of the Maple Bat. Maple Bats have become extremely popular since Barry Bonds broke the single season home run record using a maple bat. Maple is a denser wood than Ash, so the Ash bats are more flexible and more likely to break than maple. Although maple bats are more expensive, they usually last quite a bit longer than Ash so the difference in cost usually isn't an issue.
no because ash has a closer grain then maple which makes it stronger
Ash is extremely hard, this is what baseball bats are made of.
Completely wrong answer below. Ash and maple are only two wood species used for wood bats at mlb level. Birch has very small following. Bamboo is not allowed to be used in pro ball because MLB rules specifically require wood bats to be one solid piece of wood...bamboo is hollow. Bamboo because bamboo is stronger.That is also what the people in the World series use.
Here is a good summary of both Bat TypesHard Rock Maple-Maple bats have become very popular over the past ten years. After Barry Bonds broke the single season home run record with one many players switched to the hard wood to swing with. Unlike ash Maple bats have very little flex but pack a lot of pop. Maple bats are heavier if not turned correctly but are great for training bats as well as a long term bat.Traditional Ash-I call it "traditional" because bats have been made with ash since baseball began in the early 1900's. There is nothing like the feeling of swinging an unfinished ash bat. Ash is unlike any other wood bat in the way that the bat flexes when it hits the ball, letting the ball carry further. Ash bats are great but lack the strength of other harder woods. But if you hit with any wood bat correctly it will last you a ton of at-bats.
to make baseball bats!