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 Metals are selected to be compatible with the architectural decor or coloring.................. The use of copper is basically aesthetic, since it is such a red metal in appearance............. Magnesium is often used because it is extremely lightweight and can be deep-etched for ADA signs..................... Zinc can also be deep-etched very nicely and it is fine for exterior use.................

Etched Plaques Materials & Finishes

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Standard Thicknesses: 1/16" (.0625"), 1/8" (.125"), 3/16" (.1875"), 1/4" (.250") Largest size available: 36" x 72" in stainless brass or bronze; 40" x 60" in copper. Grain can be Horizontal or Vertical.

Commercial Bronze
Satin Finish Polished Finish
Copper Development Association Alloy C22000; 90% Copper, 10% Zinc
Brass
Satin Finish Polished Finish
Copper Development Association Alloy C26000; 70% Copper, 30% Zinc
Copper
Satin Finish Polished Finish
Copper Development Association C11000
Stainless Steel
Satin Finish Polished Finish
Standard: conforms to Alloy 304 Optional: conforms to Alloy 316
Zinc
Satin Finish Polished Finish
Standard sized sheet 25" x 38" Available thickness: .064", .125", .153", .250"

Helpful Hints

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Commercial Bronze is a close color match to cast bronze alloy. When using etchings for mounting to a cast bronze plaque, choose Commercial Bronze for etched.

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When Copper, Yellow Brass and Commercial Bronze are specified for exterior use, we recommend a polyurethane coating. For exterior applications that must stand the test of time, use etched stainless steel or cast bronze plaques.
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Stainless Steel etchings are not protected by a clear coating and are ideal for exterior use. For exterior applications, Alloy 316 may be more resistant to corrosion in certain types of environments and is available as a special priced option.

NOTES: Metals are selected to be compatible with the architectural decor or coloring. The use of copper is basically aesthetic, since it is such a red metal in appearance. Zinc can be deep-etched nicely and it is fine for exterior use.

   The various brass alloys such as Yellow Brass and Commercial Bronze are desirable primarily because of the material color and how it would look in the environment it is used. Brass is the most yellow in color. Commercial Bronze is redder. Copper is the reddest of metals.