4x8 aluminum plates are popular for several reasons:

Standard Size: The 4x8 size is a standard size for many building materials, including aluminum plates. It is a convenient and widely available size that is easy to handle and transport.

Versatile: Aluminum plates are versatile and can be used for many applications, including construction, automotive, aerospace, and marine industries. The 4x8 size is often large enough for these applications, but not too large that it becomes difficult to handle or transport.

Cost-effective: 4×8 aluminum plates are often less expensive than larger sizes because they can be manufactured in higher quantities and are more readily available. Additionally, cutting and shaping smaller pieces from a 4x8 plate can often be more cost-effective than ordering custom sizes.

Easy to Work With: The 4x8 size of aluminum plates is easy to cut, drill, and weld, making it a convenient size for many DIY and industrial applications.

Overall, the 4x8 size of aluminum plate is popular because it is a standard size that is versatile, cost-effective, and easy to work with.