Selecting the right material is critical in purchasing toilet partitions. A few things to keep in mind are the environment, vandal abuse, and the expected life span of bathroom partitions. For example you don't want to install plastic laminate partitions where there is high moisture content nor a high risk of vandal abuse. There are specific materials made for every imaginable circumstance.
Plastic Laminate Solid Plastic (HDPE/Polly) Baked Enamel (Metal)
Stainless Steel Phenolic SCRC by Bobrick