Expanded Metal Manufacturers Association (EMMA)
Expanded Metal| EMMA
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EMMA Testing Update

The EMMA division has completed tests showing the effectiveness of expanded metal used as a screen for openings.  For details of the three tests, see the links below.  The range of values for SHGC (Solar Heat Gain Coefficient) is from 0 to 1.  A window with no shield for solar gain has a higher rating approaching 1.  When a screen is added the value is reduced to less than one.  The EMMA solar heat gain test shows that the value for all three tests ranges between 0.1 and 0.5, meaning the heat gain reduction to one tenth to one half depending on the angle of the sun.

Test 1: AP2X4 .125 39% Open Unflat Aluminum expanded metal with a matte black powder coat oriented a horizontal position.  The Solar Heat Gain Coefficient for this material is 0.09 at a sun angle of 60 Degrees.  The material tested is not a standard expanded metal product, but a special design suitable for use as a sunshade that is readily available from member companies.

Test 2: 1-1/2 .125 29% Open Unflat Aluminum expanded metal with a white powder coat oriented a horizontal position.  The Solar Heat Gain Coefficient for this material is 0.14 at a sun angle of 60 Degrees.  The material tested is not a standard expanded metal product, but a special design suitable for use as a sunshade that is readily available from member companies.

Test 3: 3/4 .125 21% Open Unflat Aluminum expanded metal with a matte black powder coat oriented a horizontal position.  The Solar Heat Gain Coefficient for this material is 0.10 at a sun angle of 60 Degrees.  The material tested is not a standard expanded metal product, but a special design suitable for use as a sunshade that is readily available from member companies.

 

Welcome to EMMA, a Division of NAAMM

EMMA: Stretching Your Dollars. . .Increasing Your Options.

Expanded Metal means versatility. Versatile is the key word describing Expanded Metal. New applications are found for it every day in industry, offices and homes. Expanded Metal allows the design professional the freedom to exercise maximum creativity.

Available in different thickness and opening sizes, from micro or fine mesh to grating, Expanded Metal is produced in a variety of metals and other materials. Expanded Metal facilitates the free flow of air, fluid, or light where required. With Expanded Metal, there is no scrap.

The Expanded Metal Manufacturers Association (EMMA) is comprised of North American Manufacturers of expanded metal materials. It is a trade association whose main mission and objective is to promote the increased use of expanded metal manufactured in North America through education, marketing, and standards development. The Association develops and supports programs and activities to advance these objectives.

EMMA member companies conduct studies and technical research on product applications, promote activities designed to broaden the markets for expanded metal, and create wider use of its products and services. It also prepares and updates useful industry standards and tolerances to assure member companies provide a consistent and superior level of quality.

The Members of EMMA are highly specialized in the manufacturing methods and technologies employed in the production of expanded metal and they strive to employ state-of-the-art equipment. By specifying materials supplied by an EMMA member company, you are assured a consistent level of quality produced by manufacturers with the required expertise to meet the most stringent industry standards.