... , stampingMaterial CapabilitiesBrass, Bronze, Copper, Hardened Metals, Precious Metals, Stainless Steel, Aluminum, Alloy (Thickness from 0.03 mm up to 1 mm ... precision± 0.01mm (common difference). It's generally 20% of material thickness.Surface treatment for choice Silver/Gold/Tin plated, Matt finish, paint,