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4.52 <br />MACROPOXY® 646-100 <br />FAST CURE EPOXY <br /> PART A B58-620 SERIES PART B B58V620 HARDENER <br />Protective <br />& <br />Marine <br />Coatings <br />www.sherwin-williams.com/protective <br />APPLICATION BULLETIN <br />APPLICATION PROCEDURES <br />Surface preparation must be completed as indicated. <br />Mix contents of each component thoroughly with low speed power agitation. Make certain no pigment remains on the bottom of the can. Then combine one part by volume of Part A with one part by volume of Part B. Thoroughly agitate the mixture with power agitation. Allow the material to sweat-in as indicated prior to ap-plication. Re-stir before using. <br />If reducer solvent is used, add only after both components have been thoroughly mixed, after sweat-in. <br />Apply paint at the recommended fi lm thickness and spreading <br />rate as indicated below: <br />Recommended Spreading Rate per coat: <br />Minimum Maximum <br />Wet mils (microns)7.0 (175)13.5 (338) <br />Dry mils (microns)5.0*(125)10.0*(250)* <br />~Coverage sq ft/gal (m2/L)116 (2.8)232 (5.7) <br />Theoretical coverage sq ft/gal <br />(m2/L) @ 1 mil / 25 microns dft 1168 (28.6) <br />NOTE: Brush or roll application may require multiple coats to <br />achieve maximum fi lm thickness and uniformity of appearance. <br />*See Recommended Systems on reverse side. See Performance <br />Tips section also. <br />Drying Schedule @ 7.0 mils wet (175 microns): <br />@ 40°F/4.5°C @ 77°F/25°C @ 100°F/38°C <br />50% RH <br />To touch:4-5 hours 2 hours 1.5 hours <br />To handle:48 hours 8 hours 4.5 hours <br />To recoat: <br />minimum:48 hours 8 hours 4.5 hours <br />maximum:1 year 1 year 1 year <br />Cure for <br />service:10 days 7 days 4 days <br />immersion:14 days 7 days 4 days <br />If maximum recoat time is exceeded, abrade surface before recoating. <br />Drying time is temperature, humidity, and fi lm thickness dependent. <br />Pot Life:10 hours 4 hours 2 hours <br />Sweat-in-time:30 minutes 30 minutes 15 minutes <br />Application of coating above maximum or below minimum recommended spreading rate may adversely affect coating performance. <br />CLEAN UP INSTRUCTIONS <br />Clean spills and spatters immediately with Reducer R7K111 or Oxsol 100. Clean tools immediately after use with Reducer R7K111 or Oxsol 100. Follow manufacturer's safety recommendations when using any solvent. <br />DISCLAIMER <br />The information and recommendations set forth in this Product Data Sheet are <br />based upon tests conducted by or on behalf of The Sherwin-Williams Company. <br />Such information and recommendations set forth herein are subject to change and <br />pertain to the product offered at the time of publication. Consult your Sherwin- <br />Williams representative to obtain the most recent Product Data Information and <br />Application Bulletin. <br />PERFORMANCE TIPS <br />Stripe coat all crevices, welds, and sharp angles to prevent early failure in these areas. <br />When using spray application, use a 50% overlap with each pass of the gun to avoid holidays, bare areas, and pinholes. If necessary, cross spray at a right angle <br />Spreading rates are calculated on volume solids and do not include an application loss factor due to surface profi le, roughness or po-rosity of the surface, skill and technique of the applicator, method of application, various surface irregularities, material lost during mixing, spillage, overthinning, climatic conditions, and excessive fi lm build. <br />Excessive reduction of material can affect fi lm build, appearance, and adhesion. <br />Do not mix previously catalyzed material with new. <br />Do not apply the material beyond recommended pot life. <br />In order to avoid blockage of spray equipment, clean equipment before use or before periods of extended downtime with Reducer R7K111 or Oxsol 100. <br />Insuffi cient ventilation, incomplete mixing, miscatalyzation, and external heaters may cause premature yellowing. <br />Excessive fi lm build, poor ventilation, and cool temperatures may cause solvent entrapment and premature coating failure. <br />Tinting is not recommended for immersion service. <br />Use only Mil White for immersion service. <br />Quik-Kick Epoxy Accelerator is acceptable for use. See data page 4.99 for details. <br />Application of coating above maximum or below minimum recommended spreading rate may adversely affect coating performance. <br />For Immersion Service: (if required) Holiday test in accordance with ASTM D5162 for steel, or ASTM D4787 for concrete. <br />When coating over aluminum and galvanizing, recommended dft is 2-4 mils (50-100 microns). <br />Acceptable for Concrete Floors. <br />Refer to Product Information sheet for additional performance characteristics and properties. <br />SAFETY PRECAUTIONS <br />Refer to the MSDS sheet before use. <br />Published technical data and instructions are subject to change without notice. <br />Contact your Sherwin-Williams representative for additional technical data and <br />instructions. <br />WARRANTY <br />The Sherwin-Williams Company warrants our products to be free of manufacturing <br />defects in accord with applicable Sherwin-Williams quality control procedures. <br />Liability for products proven defective, if any, is limited to replacement of the de- <br />fective product or the refund of the purchase price paid for the defective product <br />as determined by Sherwin-Williams. NO OTHER WARRANTY OR GUARANTEE <br />OF ANY KIND IS MADE BY SHERWIN-WILLIAMS, EXPRESSED OR IMPLIED, <br />STATUTORY, BY OPERATION OF LAW OR OTHERWISE, INCLUDING MER- <br />CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.