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finish Page 2 of 3 <br />Sacrificial: The zinc coating will protect scratches, cut edges, etc. through an anodic <br />i <br />sacrificial process. <br />The service life of zinc coating is directly related to the zinc coating thicknessas shown <br />below. <br />Comparison of Zinc Galvanized Finishes <br />.��--. a Hat Dip Galvanized - 2.6 MIL <br />e Pregalvanized - 0.75 MIL <br />Electro-Gaivanized (SC1) - 0.2 MIL <br />• Electro-Gaivanized (SC3) - 0.6 MIL <br />Perma-Gold (SC1) - 0.5 MIL <br />• Perma-Gold (SC3) - 0.5 MIL. <br />As shown in the graph, when the zinc coating is double, the service life is double under <br />most conditions. <br />Life of Prfotection vs. 'thickness of Zinc <br />and Type of Atmosphere <br />SzMto life 4 defined as ft li'me to SSG Ns*9 of the heel JU41C <br />�11 21 32 43 SA 6S 75 of 97 lot 116 W <br />70 <br />so <br />so <br />3 44 <br />20 i 1141fY 11E I Us1 <br />' 1 <br />1tl <br />OL of YlndSq. Ft. of Surface <br />.25 .50 .7s 1.00 1.%s 1.50 1.75 2.00 2.2S 2.50 2.75 140 <br />Thickness of zinc In Mils <br />6.4 0.9 UL t.1 2.1 AA 3.0 3A 10 42 .4.7 $A <br />http://www.unistrot.us/index.php?WP=finish&F=HG 2/27/2017 <br />