Stainless Steel Perforated Metal Perforated sheet contains holes and merial. Open area is the total area of the holes divided by the total area of the sheet and is expressed as a percent. Open area describes how much of the sheet is occupied by the holes. Material: Stainless steel perforated metal is usually made of low carbon steel plate, stainless steel plate or aluminum plate. Weaving and Characteristics: Stainless steel perforated metal is punched to meshes. It is winding resistant, ageing resistant and corrosion resistant. The top of the mesh is smooth, it is strong and durable. Applications: Stainless steel perforated metal is used in many fields, such as acoustics, security screens, air-condition units, radiator covers, screening, display units and so on.