Difference between Expanded Metal Sheet and Perforated Metal Sheet

There are three major differences between expanded metal sheets and perforated metal sheets: their manufacturing process, characteristics and typical end uses.

Difference in Manufacturing Process

Expanded metal sheets are manufactured by creating multiple slits in the sheet and then stretched to expand. These slits, when expanded, create a beautiful diamond pattern in a chain-like series throughout the sheet. This pattern strengthens the structure of the sheet, making it highly durable. Also, this process does not create any waste and is, therefore, cost-effective.

On the other hand, perforated metal sheets are manufactured by punching or stamping holes into the metal. These stampings can come in different shapes and designs as desired. However, the size of the holes determines the amount of scrap that is removed from the sheet. The cost of production increases with the volume of scrap produced.

Difference in Characteristics

Expanded Metal Sheet

·         Expanded metal sheet maintains its structural integrity because there is no stress involved in its manufacturing.

·         You can choose the thickness and strand dimension, depending on the requirement of your design.

·         Being made of a single-piece sheet, expanded metal sheet does not unravel.

·         It is a good conductor of heat and electricity and can retain mechanical properties.

·         Expanded metal can be almost transparent, depending on the opening.

Perforated Metal Sheet

·         Perforated metal sheet is generally made from steel metal.

·         It comes in an array of sizes, gauges, hole shapes and material types.

·         Perforated metal sheet has a boundary where holes are not punched. This adds stability to the sheet.

Difference in Uses

Expanded metal sheets are mostly used for:

·         steps

·         flooring in factories and on construction rigging

·         fences

·         wash stations

·         security applications

Perforated metal sheets are mostly used in:

·         Filters

·         Audio speaker covers

·         Tubing

·         Patio furniture

·         Vents