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What Is Expanded Metal?

What Is Expanded Metal?

Expanded metal is a sheet of metal fabricated with an everyday pattern of diamond-formed openings. These openings reduce the weight and cost of the sheet and provide ventilation, making it a versatile resolution for many applications. The most common metals used for expanded metal sheet include metal, stainless steel, and aluminum, although it can be 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 cutting machine. The knives move back and forth in a uniform pattern, slicing the sheet in alternating cuts, while the sheet moves through the machine.

As the knives minimize, they concurrently push down on the newly reduce sections, stretching them apart into "ribbons." The ribbons stay attached at the uncut sections, which turn into the corners of open diamond shapes in an expanded mesh sheet. The size, shape 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 comes in completely different profiles, together with:

Customary Expanded Sheet: A finished product as it comes off the press after being lower and expanded. Often referred to as raised expanded metal, as a result of alternating ridges fashioned by overlapping metal strips.

Flattened Expanded Sheet: A typical expanded sheet that is then cold rolled, leaving a flat, smooth surface. Flattened expanded sheet is about 5% lighter than standard 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 each sheet is a single piece of sturdy steel. Best for catwalk and platform applications.

A Versatile Product
Expanded sheet metal is a versatile and economical product that's durable, simple to work with, and provides low wind resistance. It presents one-piece development that won’t unravel under normal circumstances, and will hold its form for many years. The strands and bonds of the diamond-formed trusses add strength and rigidity.

It's commonly utilized in a wide range of applications, reminiscent of:

Machine guards

Catwalks, platforms and stair treads


Stair and balcony railing mesh

Window security




And far more

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