Sheet metal processing commonly uses materials such as cold-rolled steel (SPCC), hot-rolled steel (SHCC), galvanized steel (SECC, SGCC), copper (CU), brass, bronze, beryllium copper, aluminum plates (6061, 5052, 1010, 1060, 6063, hard aluminum, etc.), and stainless steel (mirror finish, brushed finish, matte finish). The choice of material varies depending on the product's function, generally considering the product's purpose and cost.