Metric standard aluminum sheets and plates are flat with no surface texture. They are solid, lightweight, and offer a good strength-to-weight ratio. Plates have a thickness of ¼” (6mm) or more, while sheets are less than ¼” (6mm) thick. They are available in different material grades that have distinct levels of strength and properties that help them withstand fatigue, exposure to chemicals, and maintain stability. These sheets and plates are formed to metric dimensions and specifications.