{"id":28274,"date":"2026-09-29T10:56:10","date_gmt":"2026-09-29T13:56:10","guid":{"rendered":"https:\/\/chousa.com.ar\/?p=28274"},"modified":"2026-09-29T12:56:17","modified_gmt":"2026-09-29T15:56:17","slug":"zincado-electrolitico-piezas-estampadas-pick-ups","status":"publish","type":"post","link":"https:\/\/chousa.com.ar\/en\/zincado-electrolitico-piezas-estampadas-pick-ups\/","title":{"rendered":"How to Specify the Right Electrolytic Zinc Coating for Stamped Pick-Up Parts"},"content":{"rendered":"<h4 class=\"wp-block-heading\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">In this article:<\/mark><\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\"><strong>Stamped Parts in the Automotive Industry: Where They Appear in a Pick-Up<\/strong><\/mark><\/li>\n\n\n\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">What Corrosion Problems Does Electrolytic Zinc Coating Solve in Stamped Parts?<\/mark><\/strong><\/li>\n\n\n\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">How to Specify Electrolytic Zinc Coating in Stamped Parts: Key Factors<\/mark><\/strong><\/li>\n\n\n\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Chousa in the Argentine Automotive Industry<\/mark><\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Argentina is the fourth largest pick-up producer in the world. Behind every vehicle that rolls off the assembly lines in Z\u00e1rate, General Pacheco, and C\u00f3rdoba lies a supply chain manufacturing thousands of metal components to world-class quality standards.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most widely used surface treatments in that supply chain is electrolytic zinc coating for stamped parts. In this article, we explain how it works, what protection it offers, and how to specify it correctly for each application.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\"><strong><strong>Stamped Parts in the Automotive Industry: Where They Appear in a Pick-Up<\/strong><\/strong><\/mark><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In a pick-up, stamped parts are present in virtually every system: body, chassis, brakes, suspension, and exhaust.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Each part operates under different conditions. A pick-up can go from urban asphalt to muddy farmland in the same day, exposing its metal components to a wide range of aggressive environments:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1128\" height=\"846\" src=\"https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico1.png\" alt=\"\" class=\"wp-image-28281\" srcset=\"https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico1.png 1128w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico1-640x480.png 640w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico1-1024x768.png 1024w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico1-768x576.png 768w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico1-16x12.png 16w\" sizes=\"(max-width: 1128px) 100vw, 1128px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\"><strong>Moisture and water<\/strong> rain, puddles, frequent washing<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Salts and agrochemicals<\/strong> fertilizers and crop protection products in rural operation<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Dust and abrasive particles<\/strong> dirt roads and rural areas<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Extreme heat<\/strong> components near the engine and exhaust system<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>De-icing salts<\/strong> roads and cities where road salt is used in winter<\/p>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Under these conditions, a stamped part without the right anticorrosion coating will begin to corrode well before its expected service life.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\"><strong><strong><strong>What Corrosion Problems Does Electrolytic Zinc Coating Solve in Stamped Parts?<\/strong><\/strong><\/strong><\/mark><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uncoated steel stamped parts are vulnerable to corrosion from the moment they come into contact with ambient moisture. Electrolytic zinc coating addresses this problem efficiently and economically.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"466\" height=\"826\" src=\"https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico3.png\" alt=\"\" class=\"wp-image-28278\" srcset=\"https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico3.png 466w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico3-271x480.png 271w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico3-7x12.png 7w\" sizes=\"(max-width: 466px) 100vw, 466px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\"><strong>1. Corrosion protection<br><\/strong>Electrolytic zinc coating deposits a layer of zinc onto the steel surface, acting simultaneously as a physical barrier and a sacrificial anode \u2014 the zinc corrodes preferentially to protect the underlying steel. Depending on the coating thickness and passivation type, it can achieve between 72 and 240 hours of resistance in salt spray testing (ASTM B117).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Compatibility with complex geometries<br><\/strong>Automotive stamped parts feature edges, bends, holes, and cross-sectional changes that challenge many coating processes. Rack or barrel electrolytic zinc coating covers these geometries in a controlled manner, with process parameters adjusted to ensure coverage across all areas of the part.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Uniform surface finish<br><\/strong>Electrolytic zinc coating produces a smooth, uniform, and visually appealing finish. In applications where aesthetics matter this finish is a meaningful differentiator.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Efficiency for high volumes<br><\/strong>The automotive industry produces millions of parts per year. Electrolytic zinc coating is a continuous and highly automatable process, making it ideal for supplying high-volume production lines with tight lead times.<\/p>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. Compatibility with different passivation types<br><\/strong>Depending on the level of protection required, electrolytic zinc coating for stamped parts can be combined with different passivations:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Passivation<\/mark><\/strong><\/td><td><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Color<\/mark><\/strong><\/td><td><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Approximate Resistance (NSS)<\/mark><\/strong><\/td><\/tr><tr><td>&nbsp;Clear<\/td><td>Bluish<\/td><td>72 hrs<\/td><\/tr><tr><td>Yellow (trivalent)<\/td><td>Iridescent<\/td><td>96\u2013120 hrs<\/td><\/tr><tr><td>Black<\/td><td>Black<\/td><td>96\u2013120 hrs<\/td><\/tr><tr><td>Additional sealer<\/td><td>Variable<\/td><td>Up to 240 hrs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\"><strong><strong><strong><strong>How to Specify Electrolytic Zinc Coating in Stamped Parts: Key Factors<\/strong><\/strong><\/strong><\/strong><\/mark><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A correct specification of electrolytic zinc coating for automotive stamped parts must consider several factors:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1128\" height=\"846\" src=\"https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico22.jpg\" alt=\"\" class=\"wp-image-28286\" srcset=\"https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico22.jpg 1128w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico22-640x480.jpg 640w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico22-1024x768.jpg 1024w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico22-768x576.jpg 768w, https:\/\/chousa.com.ar\/wp-content\/uploads\/zincado-electrolitico22-16x12.jpg 16w\" sizes=\"(max-width: 1128px) 100vw, 1128px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\"><strong>1. Part geometry<br><\/strong>&nbsp;Parts with deep cavities, closed edges, or highly complex geometries may have areas of difficult access where zinc thickness is lower. The process \u2014 rack or barrel \u2014 and bath parameters must be adjusted to match the geometry of each stamped part.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Required coating thickness<br><\/strong>&nbsp;ASTM B633 establishes different thickness classes for electrolytic zinc coating based on service environment:<\/p>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Class<\/mark><\/strong><\/td><td><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Minimum thickness<\/mark><\/strong><\/td><td><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Typical environment<\/mark><\/strong><\/td><\/tr><tr><td>Fe\/Zn 5<\/td><td>5 microns<\/td><td>Interior, low exposure<\/td><\/tr><tr><td>Fe\/Zn 8<\/td><td>8 microns<\/td><td>Moderate exposure<\/td><\/tr><tr><td>Fe\/Zn 12<\/td><td>12 microns<\/td><td>Severe exposure<\/td><\/tr><tr><td>Fe\/Zn 25<\/td><td>25 microns<\/td><td>Very severe<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Passivation type<br><\/strong>&nbsp;Passivation defines the level of additional protection over the zinc layer. In the Argentine automotive industry, OEM specifications from Toyota, Ford, and Volkswagen define the required passivation type based on each part's location in the vehicle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Required corrosion resistance<br><\/strong>&nbsp;The operating environment defines the minimum hours of salt spray resistance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. Hydrogen embrittlement considerations<br><\/strong>&nbsp;In high-hardness stamped parts the electrolytic process can introduce hydrogen into the steel. For these cases, post-plating hydrogen embrittlement relief (de-embrittlement bake) is a critical step that cannot be skipped.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\"><strong><strong><strong><strong><strong>Chousa in the Argentine Automotive Industry<\/strong><\/strong><\/strong><\/strong><\/strong><\/mark><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Chousa has over 70 years of experience developing surface treatment solutions for Argentine industry. The automotive sector is one of our longest-standing areas of expertise \u2014 from OEM supply chain providers to aftermarket manufacturers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Do you manufacture stamped parts for the automotive industry and need to evaluate the right electrolytic zinc coating for your application?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Contact our technical team at <strong><a href=\"mailto:info@chousa.com.ar\">info@chousa.com.ar<\/a><\/strong> we analyze each case to help you specify the coating your part requires.<\/p>","protected":false},"excerpt":{"rendered":"<p>Argentina is the fourth largest pick-up producer in the world. Behind every vehicle that rolls off the assembly lines in Z\u00e1rate, General Pacheco, and C\u00f3rdoba lies a supply chain manufacturing thousands of metal components to world-class quality standards. One of the most widely used surface treatments in that supply chain is electrolytic zinc coating for stamped parts. In this article, we explain how it works, what protection it offers, and how to specify it correctly for each application.<\/p>","protected":false},"author":3,"featured_media":28275,"comment_status":"closed","ping_status":"close","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[63],"tags":[],"class_list":["post-28274","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-automotriz"],"acf":[],"_links":{"self":[{"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/posts\/28274","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/comments?post=28274"}],"version-history":[{"count":13,"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/posts\/28274\/revisions"}],"predecessor-version":[{"id":28293,"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/posts\/28274\/revisions\/28293"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/media\/28275"}],"wp:attachment":[{"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/media?parent=28274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/categories?post=28274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chousa.com.ar\/en\/wp-json\/wp\/v2\/tags?post=28274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}