Page 92 - 2015 Professional Signage Catalog

Flat Cut Metal
STEEL FINISHES
Note: Vertical grain is standard all all cut metal letters. Horizontal grain can be requested.
Alloy C304 Stainless Brushed
Price as Listed (#4 finish - Add 15%)
Alloy 316 Stainless
Cor-Ten® Natural
Less 30%
1/8” & 1/4” ONLY
– a weather resistant steel created by alloy- ing copper, chromium and nickel. The material forms its own protective layer when exposed to atmospheric elements. Essentially, the top layer corrodes which then protects the steel beneath it. The natural finish does not normally require any form of maintenance such as painting, which makes the material a highly cost effective alternative to other structural steels.
Polished
Add 30%
Brushed
Add 30%
Polished
Add 60%
Alloy C304 is the standard “18/8” stainless; it is the most versatile and most widely used stainless steel.
For areas within 50 miles of the coast, Gemini recom- mends Alloy 316. This conforms to recommendations by numerous metal industry panels. Use of 304 in coastal areas may experience premature failure.
POLISHED
Alloy 316 is the standard molybdenum-bearing grade, second in importance to C304 amongst the austenitic stainless steels. The molybdenum gives 316 better over- all corrosion resistant properties than C304, particularly higher resistance to pitting and crevice corrosion in chloride environments.
® Cor-Ten
Polishing requires a minimum of 2" height and 1/4" depth or 3" height and 1/8" depth (stud mounts required). Restrictions may apply on letters over 24". All stainless steel letters and logos are shipped without a clear polyurethane coating. Alloy C304 will not tarnish under most conditions. In cases where stainless steel letters and logos will be installed in salt water environments Alloy 316 offers even better corrosion and tarnishing resistance. Using harsh chemicals may cause permanent damage to the materials surface.
NOTE ON MAINTAINING BRUSHED STAINLESS
Brushed Stainless Steel letters are particularly susceptible to collecting exterior contaminants and airborne pollutants from harsh environments. This is because the brushed stainless steel finish catches and holds residues that can stain the surface of the letters. In many cases, we have seen customers believe that these residues are actually rust. In most non-marine cases, the brushed stainless steel finish simply needs to be cleaned. This can be easily accom- plished because stainless steel letters are shipped without a clear coat—so simply by taking
a scotchbrite pad and ordinary Stainless Steel Cleaner (such as Kleen King) letters can be returned to an “as new” condition. In cases where actual oxidation (rust) has occurred—it is because the stainless has been exposed to marine environments or harsh atmospheres such as being near treated chlorine pools or concentrated engine exhaust. In these cases Alloy 316 is recommended for longer life—but may require clear coat protection to further lengthen the lifespan of the stainless steel. Remember—stainless steel is “stain less” not “stain free”.
The picture on the top right is of a letter near a fountain that collected some residue that our customer thought was ‘rust’. With just a paper towel and some Kleen King, it was a simple solution to restore the sign to a perfect luster. (picture at bottom right)
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Metal Letters