Copper Expanded Metal

A reliable source for Expanded Metal information and leading Expanded Metal Companies & Manufacturers.

While many different metals are suitable for metal expansion, copper is chosen particularly for this process when being employed by certain companies, such as those in the electrical, heating and cooling, refrigeration, construction, ornamental and architectural industries. Read Moreā€¦

Copper Expanded Metal Copper expanded metal is a sheet or plate composed of copper or its alloys, such as brass or bronze. It has been slit and stretched simultaneously to create an open framework of solid construction.

Leading Manufacturers

Hopkins, MN  |  800-828-7785

An ISO 9001-registered company, Spantek is a respected leader in the manufacture of expanded metals & expanded metal components. Our expanded metals come in small metal mesh patterns & specifications, are defect-free, made to order & a cost-saving alternative to perforated metals & woven metal wires.

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Spantek $$$

Tamaqua, PA  |  888-218-2260

Our expanded metal is ideal for a wide range of applications and our teams will work with you every step of the way to guarantee your satisfaction. Our goal is to exceed your expectations and we take pride in providing our customers with outstanding services. If you would like more information about Remaly Manufacturing Company, Inc. please give one of our representatives a call today!

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Remaly Manufacturing Company, Inc. $$$

Carbondale, PA  |  800-225-7373

At Hendrick Manufacturing, we are metal perforators with capabilities to take you from design to performing secondary fabrication operations. Our company offers an array of perforated metal products. Perforated applications: filter screens, lighting, HVAC, acoustical, expanded metal, metal perforators and architectural.

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Hendrick Manufacturing Company $$$

Oklahoma City, OK  |  800-654-4568

Expanded Solutions puts more than 50 years of experience to work for your requirements in high quality expanded metals, security mesh, mini-mesh & expanded grating. Along with our large mesh capabilities, we have been an innovator in small-mesh products too. For a diversity of options please call today! We continue the tradition of excellence every day by offering quality service & products.

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Expanded Solutions L.L.C $$$

Ontario, CA  |  800-690-0012

Family owned and operated since 1959, Wallner Expac is a leading manufacturer of quality expanded metal products. With state-of-the-art equipment lines stocked with the latest technology, our skilled team produces millions of square feet of expanded metal each year. Built on integrity and a commitment to customer service, we offer custom patterns and machining to meet your needs.

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Wallner Expac, Inc. $$$
placeholder image Spantek Remaly Manufacturing Company, Inc. Hendrick Manufacturing Company Expanded Solutions L.L.C Wallner Expac, Inc.

A non-ferrous transition material, copper has excellent thermal and electrical conductivity combined with good corrosion resistance and strength. The expanding metals process improves the strength, rigidity and weight to strength ratio of a metal such as copper. Expanded metal sheets made of copper and its alloys are therefore suitable as heat sinks, radiators and enclosures. The reddish brown appearance of copper makes it a popular choice for decorative mesh as well as decorative ornaments, filters, walkways and grates.

Copper expanded metal allows for varying amounts of light, water, air, sound and debris to pass through it, improving visibility, safety and ventilation. While other manufacturing processes can achieve these same benefits, metal expansion is more cost effective than punching and perforation techniques because there is no material wasted as there is with these other techniques. The solid construction also means that there are no seams, welds or joints to wear and work loose over time, making copper expanded metal a more stable and long lasting alternative to the use of welders or fasteners.

Copper expansion begins with flat plates or sheets of the metal that are produced by roll forming the raw mineral. These stock shapes are then fed into an automated expansion machine. It is important to consider that the thickness will be significantly reduced and the length increased in order to select the most appropriate sheet metal for a given application. The process of expansion can increase the length of a sheet of copper up to ten times that of the original.

In the expansion machine, a series of knife-like dies slit the metal hundreds and sometimes thousands of times in an alternating offset pattern. At the same time, the sheet is being drawn through rollers. This heat and pressing technique stretches the metal causing the pre-cut holes to swell. The once solid sheet of metal is then extruded from the machine as an open latticework of solid construction. While it is possible to expand metal manually, computerized equipment shows significant gains on speed and precision.

Most often the apertures are diamond shaped, although hexagonal and custom shaped openings are also available with the use of different dies. Not only the shape, but the percentage of open area should be carefully considered with regards to the finished product or any secondary operations. Malleable and ductile, copper is easily formed and processed both before and after metal expansion.

Copper Expanded Metal Informational Video