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What is Expanded Metal?

Expanded metal is a sheet of metal fabricated with a regular sample of diamond-shaped openings. These openings reduce the weight and cost of the sheet and provide ventilation, making it a versatile solution for many applications. The most common metals used for expanded metal sheet include steel, stainless steel, and aluminum, though it is also made from titanium and copper.

How is Expanded Metal Made?

expanded metalExpanded sheet is made from a single sheet of metal that has been slit by a row of knives mounted on an industrial die chopping machine. The knives move back and forth in a uniform pattern, slicing the sheet in alternating cuts, while the sheet moves via the machine.

Because the knives cut, they simultaneously push down on the newly lower sections, stretching them apart into "ribbons." The ribbons stay connected at the uncut sections, which develop into the corners of open diamond shapes in an expanded mesh sheet. The dimensions, form and positioning of the knives and the thickness of the metal sheet can be changed to create openings of different dimensions for a variety of applications.

Types of Expanded Metal

Expanded metal sheet is available in totally different profiles, together with:

Normal Expanded Sheet: A completed product as it comes off the press after being lower and expanded. Usually referred to as raised expanded metal, because of the alternating ridges fashioned by overlapping metal strips.

Flattened Expanded Sheet: An ordinary expanded sheet that is then cold rolled, leaving a flat, smooth surface. Flattened expanded sheet is about 5% lighter than customary expanded sheet.

Expanded Metal Grating: A heavy duty expanded sheet manufactured from carbon metal sheet or plate. Expanded metal grating has no joints or welds, as every sheet is a single piece of sturdy steel. Ideally suited for catwalk and platform applications.

A Versatile Product

Expanded sheet metal is a flexible and economical product that is durable, easy to work with, and provides low wind resistance. It gives one-piece building that won’t unravel under normal circumstances, and can hold its shape for a lot of years. The strands and bonds of the diamond-shaped trusses add energy and inflexibleity.