{"id":5456,"date":"2026-07-21T09:51:26","date_gmt":"2026-07-21T02:51:26","guid":{"rendered":"https:\/\/dk-metalsurfacetreatment.com\/?p=5456"},"modified":"2026-08-13T15:01:16","modified_gmt":"2026-08-13T08:01:16","slug":"chrome-free-pre-treatment-a109","status":"publish","type":"post","link":"https:\/\/dk-metalsurfacetreatment.com\/en\/chrome-free-pre-treatment-a109\/","title":{"rendered":"Chrome-Free Pre-treatment \u2013 \u200b\u200bPrimecoat A109"},"content":{"rendered":"<h2><strong><span style=\"font-size: 90%;\">PrimeCoat\u00ae A109 \u2013 Chrome-Free Pre-treatment for Aluminum Coil and Cold-Rolled Steel<\/span><\/strong><\/h2>\n<p>PrimeCoat\u00ae A109 is a water-based, chromium-free metal surface pre-treatment produced using advanced nanotechnology; it serves as an effective alternative to traditional chromate pre-treatment systems and is specifically developed for aluminum coil and cold-rolled steel.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-4838\" style=\"font-size: 14.4px;\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/Gemini_Generated_Image_aswlbhaswlbhaswl-150x150.png\" alt=\"H\u00f3a ch\u1ea5t ti\u1ec1n x\u1eed l\u00fd\" width=\"346\" height=\"346\" srcset=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/Gemini_Generated_Image_aswlbhaswlbhaswl-150x150.png 150w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/Gemini_Generated_Image_aswlbhaswlbhaswl-300x300.png 300w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/Gemini_Generated_Image_aswlbhaswlbhaswl-1024x1024.png 1024w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/Gemini_Generated_Image_aswlbhaswlbhaswl-768x768.png 768w\" sizes=\"auto, (max-width: 346px) 100vw, 346px\" \/><\/p>\n<p>PrimeCoat\u00ae A109 pretreatment chemical is free from chromium, fluoride, formaldehyde, and SVHCs, helping to meet increasingly stringent environmental and chemical safety requirements in industrial manufacturing. This Chrome-Free solution is crucial for those seeking safer alternatives.<\/p>\n<p>The bonding performance of PrimeCoat\u00ae A109 has been evaluated in combination with various coating systems\u2014such as single-coat, primer\/topcoat, and powder coating systems\u2014including PVDF, polyester, and polyurethane.<\/p>\n<p>When subjected to wet conditions\u2014including humidity, boiling water, and acid salt spray tests\u2014the product demonstrated superior performance across all evaluations.<\/p>\n<hr data-start=\"1403\" data-end=\"1406\" \/>\n<h3><strong><span style=\"font-size: 90%;\">Key Advantages of PrimeCoat\u00ae A109<\/span><\/strong><br \/>\n<strong><span style=\"font-size: 90%;\">1. Water-based, Chrome-Free product<\/span><\/strong><\/h3>\n<p>PrimeCoat\u00ae A109 is a water-based, chrome-free pretreatment chemical that aligns with the shift toward safer and more sustainable surface treatment technologies.<\/p>\n<p>It serves as a replacement for traditional no-rinse chromate pretreatment systems while maintaining the necessary corrosion resistance and adhesion performance for metal surfaces.<\/p>\n<h3><strong><span style=\"font-size: 90%;\">2. Improved paint adhesion<\/span><\/strong><\/h3>\n<p>A significant advantage of PrimeCoat\u00ae A109 is its ability to enhance adhesion between the metal surface and the paint coating.<\/p>\n<p data-start=\"1847\" data-end=\"1972\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4780\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/A109-2.png\" alt=\"Chrome-Free\" width=\"773\" height=\"258\" \/><\/p>\n<p>For coil-coating systems, PrimeCoat\u00ae A109 creates a stable base layer, promoting stronger paint adhesion on aluminum or zinc-alloy coated steel surfaces.<\/p>\n<h3><strong><span style=\"font-size: 90%;\">3. Enhanced adhesive bonding<\/span><\/strong><\/h3>\n<p>In addition to paint adhesion, the PrimeCoat\u00ae A109 pretreatment chemical improves adhesive bonding characteristics on metal surfaces. This is particularly important for applications requiring high bond strength, such as construction materials, pre-painted aluminum sheets, pre-painted coated steel, or components requiring bonding.<\/p>\n<h3><strong><span style=\"font-size: 90%;\">4. Excellent corrosion resistance<\/span><\/strong><\/h3>\n<p>When used with compatible primer and topcoat systems, PrimeCoat\u00ae A109 provides excellent corrosion resistance, comparable to traditional no-rinse chromate pretreatment systems.<\/p>\n<p>According to technical specifications, the product can withstand 1,000 to 2,000 hours of acid salt spray testing with less than 1 mm of corrosion, depending on the coating system and application conditions.<\/p>\n<p data-start=\"2646\" data-end=\"2833\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4782 size-full\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/A109-3.png\" alt=\"H\u00f3a ch\u1ea5t ti\u1ec1n x\u1eed l\u00fd\" width=\"792\" height=\"322\" \/><\/p>\n<h3 data-section-id=\"1fv0nwp\" data-start=\"2835\" data-end=\"2885\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4784\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/A109-4.png\" alt=\"H\u00f3a ch\u1ea5t ti\u1ec1n x\u1eed l\u00fd\" width=\"868\" height=\"405\" \/><\/h3>\n<h3><strong><span style=\"font-size: 90%;\">5. Can replace the primer layer in certain coating systems<\/span><\/strong><\/h3>\n<p>PrimeCoat\u00ae A109 offers excellent adhesion and corrosion resistance, enabling it to replace the primer layer in suitable coating systems. This simplifies processes, optimizes costs, and boosts production efficiency.<\/p>\n<hr \/>\n<h2><strong><span style=\"font-size: 90%;\">Applications of PrimeCoat\u00ae A109 in manufacturing<\/span><\/strong><\/h2>\n<p>PrimeCoat\u00ae A109 is primarily used in the pre-treatment stage prior to coating or adhesive bonding on metal surfaces.<\/p>\n<p>The product is suitable for the following processes:<\/p>\n<ul>\n<li><strong><span style=\"color: #253782;\">Aluminum pre-treatment prior to coating<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Galvanized steel pre-treatment<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Zinc-aluminum-magnesium alloy coated steel pre-treatment<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Continuous coil-coating processes<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Single-layer coating systems on aluminum<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Primer\/topcoat systems<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Powder coating<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Applications requiring high adhesion and corrosion resistance<\/span><\/strong><\/li>\n<\/ul>\n<p>PrimeCoat\u00ae A109 pre-treatment chemistry has been evaluated with various coating systems\u2014such as PVDF, polyester, and polyurethane\u2014under conditions including humidity exposure, humidity testing, boiling water immersion, and acid salt spray testing.<\/p>\n<hr data-start=\"4288\" data-end=\"4291\" \/>\n<h3><strong><span style=\"font-size: 90%;\">Application Method for PrimeCoat\u00ae A109<\/span><\/strong><br \/>\n<strong><span style=\"font-size: 90%;\">Step 1. Surface Preparation<\/span><\/strong><\/h3>\n<p>PrimeCoat\u00ae A109 pretreatment chemical should be applied to a clean, dry metal surface. If the metal substrate is oily, the surface must first be cleaned using a suitable alkaline cleaner. Proper surface cleaning ensures uniform distribution of the pretreatment layer, thereby enhancing adhesion and corrosion resistance.<\/p>\n<h3><strong><span style=\"font-size: 90%;\">Step 2. Product Dilution<\/span><\/strong><\/h3>\n<p>PrimeCoat\u00ae A109 pretreatment chemical must be diluted with demineralized water. Using demineralized water minimizes impurities that could affect coating quality and the stability of the treatment solution.<\/p>\n<h3><strong><span style=\"font-size: 90%;\">Step 3. Application Method<\/span><\/strong><\/h3>\n<p>In continuous metal strip processing, the preferred method is chem-coater roll coating. Alternatively, flood coating or spray application may be used to achieve a wet film of precise thickness. The wet film thickness typically ranges from 1 to 4 microns, depending on technical specifications and line conditions.<\/p>\n<h3><strong><span style=\"font-size: 90%;\">Step 4. Drying Process<\/span><\/strong><\/h3>\n<p>The drying process is considered successful when water evaporates rapidly and the coating reaches a touch-dry state immediately after the drying zone or oven. For a wet film thickness of 1\u20134 microns, the peak metal temperature must reach at least 40\u00b0C to ensure rapid water evaporation and stable coating formation. After drying, the PrimeCoat\u00ae A109 coating must not be rinsed or cooled with water.<\/p>\n<hr data-start=\"7241\" data-end=\"7244\" \/>\n<h3><strong><span style=\"font-size: 90%;\">Learn More<\/span><\/strong><br \/>\n<strong><span style=\"font-size: 90%;\">1. Chrome-Free Passivation Solutions<\/span><\/strong><\/h3>\n<p><span style=\"font-size: 75%;\">Chrome-free passivation is a technology that creates a chemical conversion layer on metal surfaces without the use of any chromium compounds. This protective layer enhances corrosion resistance, inhibits the formation of white rust, and improves surface quality prior to further processing or coating. The product is completely free of hexavalent chromium (Cr6+) and other forms of chromium, fully complying with international environmental standards such as RoHS and REACH.<\/span><\/p>\n<table style=\"width: 20.5348%; border-collapse: collapse; background-color: #253782; height: 55px;\" border=\"1\">\n<tbody>\n<tr style=\"height: 41px;\">\n<td style=\"width: 100%; height: 41px;\">\n<p style=\"text-align: center;\"><a href=\"https:\/\/dk-metalsurfacetreatment.com\/?p=4817&amp;preview=true\"><span style=\"color: #fffcfc;\"><strong><span style=\"font-size: 100%;\">PrimeCoat\u00ae Z908 VH<\/span><\/strong><\/span><\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><strong><span style=\"font-size: 90%;\">2. Trivalent Chromium (Cr\u00b3\u207a) Passivation<\/span><\/strong><\/h3>\n<p><span style=\"font-size: 75%;\">The PrimeCoat\u00ae Z80x Series is a chemical product line developed using Phosphate\/Silane technology, designed to deliver superior corrosion resistance while aligning with eco-friendly manufacturing trends. PrimeCoat\u00ae Z80x was developed to replace Hexavalent Chromium (Cr\u2076\u207a)-based passivation systems, enabling businesses to transition to chrome-free technology without compromising surface protection or corrosion resistance across various industrial applications. The product complies with RoHS and REACH standards, helping businesses reduce the use of hazardous chemicals and supporting sustainable manufacturing practices.<\/span><\/p>\n<table style=\"width: 20.2204%; border-collapse: collapse; background-color: #253782; height: 46px;\" border=\"1\">\n<tbody>\n<tr style=\"height: 46px;\">\n<td style=\"width: 100%; height: 46px;\">\n<p class=\"entry-title\" style=\"text-align: center;\"><a href=\"https:\/\/dk-metalsurfacetreatment.com\/thu-dong-hoa-chrome-iii-cho-kim-loai\/\"><strong><span style=\"font-size: 100%; color: #ffffff;\">PRIMECOAT\u00ae Z838<\/span><\/strong><\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span style=\"font-size: 90%;\">3. Solvent-Replacement Cleaner<\/span><\/h3>\n<p><span style=\"font-size: 75%;\">MM31\u00ae was developed to optimize the entire surface treatment process\u2014both before and after mechanical machining. Treatment with MM31\u00ae not only ensures a completely clean metal surface but also creates a conversion coating that offers numerous benefits: it enhances paint adhesion, ensuring a stronger bond between the coating and the metal substrate; minimizes peeling during use; improves corrosion resistance, providing superior protection against moisture and harsh environments; and inhibits rust formation.<\/span><\/p>\n<table style=\"width: 19.8275%; border-collapse: collapse; background-color: #253782; height: 10px;\" border=\"1\">\n<tbody>\n<tr style=\"height: 10px;\">\n<td style=\"width: 100%; height: 10px;\">\n<p style=\"text-align: center;\" data-section-id=\"i6fv93\" data-start=\"4722\" data-end=\"4762\"><span style=\"font-size: 100%; color: #ffffff;\"><strong><a style=\"color: #ffffff;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/tien-xu-ly-kim-loai-mm31\/\">MM31\u00ae<\/a><\/strong><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span style=\"font-size: 90%;\">4. Specialized Information<\/span><\/h3>\n<p><span style=\"font-size: 75%;\">We continuously update our articles and the latest industry news to provide information tailored to the specific needs of each client.<\/span><\/p>\n<table style=\"width: 19.8265%; border-collapse: collapse; background-color: #253782; height: 40px;\" border=\"1\">\n<tbody>\n<tr style=\"height: 40px;\">\n<td style=\"width: 100%; height: 40px; text-align: center;\"><strong><span style=\"color: #ffffff;\"><a style=\"color: #ffffff;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/tin-tuc\/\">B\u00c0I VI\u1ebeT M\u1edaI<\/a><\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2><strong><span style=\"font-size: 90%;\">Value-Added Services from DK CHEMICALS<\/span><\/strong><\/h2>\n<p>Beyond supplying surface treatment chemicals from AD CHEMICALS, DK CHEMICALS assists customers in optimizing production processes and enhancing the operational efficiency of their production lines.<\/p>\n<p>Key value-added benefits include:<\/p>\n<ul>\n<li><strong><span style=\"color: #253782;\">In-depth technical consultation.<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Production cost optimization. <span style=\"color: #ffffff;\"><a style=\"color: #ffffff;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/hoa-chat-tien-xu-ly-truoc-khi-son\/\" target=\"_blank\" rel=\"noopener\">hg<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Product quality enhancement.<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Reduction of production defect rates.<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Increased market competitiveness.<\/span><\/strong><\/li>\n<li><strong><span style=\"color: #253782;\">Support for the implementation of eco-friendly technologies.<\/span><\/strong><\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">DK CHEMICALS&#8217; team of experts possesses practical experience with continuous production lines, helping clients select the most suitable solutions for specific materials and technical requirements. Please contact us for in-depth consultation!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2636 alignleft\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-300x300.png\" alt=\"C\u00f4ng ty TNHH Ho\u00e1 Ch\u1ea5t D.K\" width=\"161\" height=\"161\" srcset=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-300x300.png 300w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-150x150.png 150w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-768x768.png 768w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1.png 1024w\" sizes=\"auto, (max-width: 161px) 100vw, 161px\" \/><\/p>\n<h3><strong><span style=\"font-size: 90%; color: #253782;\">D.K. Chemicals Co., Ltd.<\/span><\/strong><\/h3>\n<p><span style=\"color: #253782;\">Address: 20 Street No. 8, Cityland Park Hills Residential Area, Go Vap Ward, Ho Chi Minh City<\/span><\/p>\n<p><span style=\"color: #253782;\">Hotline: 0909678599<\/span><\/p>\n<p><span style=\"color: #253782;\">Email: de@dk-chemicals.vn<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>PrimeCoat\u00ae A109 \u2013 Chrome-Free Pre-treatment for Aluminum Coil and Cold-Rolled Steel PrimeCoat\u00ae A109 is a water-based, chromium-free metal surface pre-treatment produced using advanced nanotechnology; it serves as an effective alternative to traditional chromate pre-treatment systems and is specifically developed for aluminum coil and cold-rolled steel. PrimeCoat\u00ae A109 pretreatment chemical is free from chromium, fluoride, formaldehyde,<\/p>\n","protected":false},"author":9,"featured_media":4623,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,802,24],"tags":[],"class_list":["post-5456","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-coli-industry-en","category-pre-treatment-chemicals","category-products"],"_links":{"self":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/5456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/comments?post=5456"}],"version-history":[{"count":1,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/5456\/revisions"}],"predecessor-version":[{"id":5457,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/5456\/revisions\/5457"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media\/4623"}],"wp:attachment":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media?parent=5456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/categories?post=5456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/tags?post=5456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}