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.