There are important factors to consider for those working with ADA ramps. When using an aluminum plate as the substrate, there are different surface options to evaluate before making a final decision.
One surface option would be Aluminum. The aluminum, being a softer alloy, is more suited to lighter duty applications. Another option would be a Stainless Steel surface. Stainless Steel will offer greater durability and longevity. The Stainless Steel surface will have a surface hardness of over 60 on the Rockwell “C” Scale and bond at over 4000 psi.