{"id":23447,"date":"2026-06-11T08:52:46","date_gmt":"2026-06-11T06:52:46","guid":{"rendered":"https:\/\/incoperfil.com\/?post_type=guia-tecnica&#038;p=23447"},"modified":"2026-07-06T10:58:02","modified_gmt":"2026-07-06T08:58:02","slug":"12-materials-of-composite-decking","status":"publish","type":"guia-tecnica","link":"https:\/\/incoperfil.com\/en\/guia-tecnica\/12-materials-of-composite-decking\/","title":{"rendered":"12. Materials of composite decking"},"content":{"rendered":"<p data-start=\"604\" data-end=\"972\">Composite decks are manufactured from cold-formed structural steels protected against corrosion through metallic coatings such as galvanized or zinc-magnesium finishes. The balance between mechanical strength and material durability ensures proper performance of composite flooring both during construction and throughout the service life of the structure.<\/p>\n<h2 data-start=\"1221\" data-end=\"1260\">Structural steels S280GD and S320GD<\/h2>\n<p data-start=\"1262\" data-end=\"1388\">Composite profiles are typically manufactured using galvanized steels S280GD and S320GD, in accordance with UNE-EN 10346.<\/p>\n<ul data-start=\"1390\" data-end=\"1483\">\n<li data-start=\"1390\" data-end=\"1436\">\n<p data-start=\"1392\" data-end=\"1436\">S280GD: minimum yield strength of 280 MPa.<\/p>\n<\/li>\n<li data-start=\"1437\" data-end=\"1483\">\n<p data-start=\"1439\" data-end=\"1483\">S320GD: minimum yield strength of 320 MPa.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1485\" data-end=\"1674\">The use of steels with higher yield strength allows optimization of structural design, increasing the load-bearing capacity of the profile or adjusting its thickness according to calculation requirements.<\/p>\n<h2 data-start=\"1676\" data-end=\"1732\">Metallic coatings: galvanizing and zinc-magnesium<\/h2>\n<p data-start=\"1734\" data-end=\"1909\">Corrosion protection is achieved through coatings applied continuously by hot-dip galvanizing in accordance with UNE-EN 10346. The most common are:<\/p>\n<ul data-start=\"1911\" data-end=\"2006\">\n<li data-start=\"1911\" data-end=\"1945\">\n<p data-start=\"1913\" data-end=\"1945\">Galvanized coatings Z200 \u2013 Z275.<\/p>\n<\/li>\n<li data-start=\"1946\" data-end=\"2006\">\n<p data-start=\"1948\" data-end=\"2006\">Zinc-magnesium coatings (for example ZM120 \u2013 ZM310).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2008\" data-end=\"2169\">Coating selection depends on the environmental corrosivity category, according to UNE-EN 1090-4 and the corresponding environmental classification.<\/p>\n<p data-start=\"2171\" data-end=\"2192\">As a general guideline:<\/p>\n<ul data-start=\"2194\" data-end=\"2427\">\n<li data-start=\"2194\" data-end=\"2262\">\n<p data-start=\"2196\" data-end=\"2262\">Dry indoor environments \u2192 Z200 coatings or equivalents.<\/p>\n<\/li>\n<li data-start=\"2263\" data-end=\"2334\">\n<p data-start=\"2265\" data-end=\"2334\">Humid indoor or light industrial environments \u2192 Z275 or ZM120.<\/p>\n<\/li>\n<li data-start=\"2335\" data-end=\"2427\">\n<p data-start=\"2337\" data-end=\"2427\">Medium or high corrosivity environments \u2192 higher-protection zinc-magnesium coatings.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2429\" data-end=\"2626\">Zinc-magnesium coatings provide higher corrosion resistance in aggressive atmospheres and improved performance at cut edges, helping extend the service life of the profile.<\/p>\n<h2 data-start=\"2628\" data-end=\"2654\">Corrosion and Durability<\/h2>\n<p data-start=\"2656\" data-end=\"2866\">The metallic coating acts as both a physical barrier and electrochemical protection against oxidation. Its thickness, expressed in g\/m\u00b2, determines the durability of the system depending on the exposure environment.<\/p>\n<p data-start=\"2868\" data-end=\"3088\">In most standard indoor composite floor applications, properly selected galvanized or zinc-magnesium steel provides adequate protection without the need for additional treatments.<\/p>\n<p data-start=\"3090\" data-end=\"3249\">In specific cases, complementary organic coatings may be used when additional protection or surface finish requirements are needed.<\/p>\n<h2 data-start=\"3251\" data-end=\"3264\">Conclusion<\/h2>\n<p data-start=\"3266\" data-end=\"3613\">Composite deck materials combine high-strength structural steels with metallic coatings suited to the exposure environment. Proper selection of steel grade and coating ensures mechanical resistance, durability, and structural performance of composite flooring throughout its service life.<\/p>\n<h2>Incoperfil Technical Manual<\/h2>\n<p data-start=\"5385\" data-end=\"5609\">For a complete definition of the system, design criteria, calculation bases, resistance tables, construction details, and installation procedures, consult the Incoperfil Composite Slab Technical Manual, available upon registration in the Documentation section of the website.<\/p>\n<hr data-start=\"5611\" data-end=\"5614\" \/>\n<p data-start=\"5616\" data-end=\"5650\">Last update: February 2026<\/p>\n<p data-start=\"5652\" data-end=\"5886\" data-is-last-node=\"\" data-is-only-node=\"\">\u00a9 Incoperfil. All rights reserved.<br data-start=\"5696\" data-end=\"5699\" \/>The technical content of this article forms part of the Composite Flooring Technical Manual and the documentation registered by Incoperfil with ColorURIS (Act No. 1-INCOPERFIL-12.2025).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Incoperfil composite profiles combine high-strength structural steels with metallic coatings that ensure durability and corrosion protection. This combination provides reliable structural performance and an adequate service life depending on the environmental exposure level. <\/p>\n","protected":false},"author":3,"featured_media":14115,"menu_order":13,"template":"","meta":{"_acf_changed":false},"categories":[1328],"tags":[],"class_list":["post-23447","guia-tecnica","type-guia-tecnica","status-publish","has-post-thumbnail","hentry","category-technical-guides-for-composite-flooring"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Composite deck materials | Steel coatings<\/title>\n<meta name=\"description\" content=\"Discover the materials used in IncoPerfil composite decking: high-performance steels and coatings that ensure durability.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/incoperfil.com\/en\/guia-tecnica\/12-materials-of-composite-decking\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Composite deck materials | Steel coatings\" \/>\n<meta property=\"og:description\" content=\"Discover the materials used in IncoPerfil composite decking: high-performance steels and coatings that ensure durability.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/incoperfil.com\/en\/guia-tecnica\/12-materials-of-composite-decking\/\" \/>\n<meta property=\"og:site_name\" content=\"INCOPERFIL\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-06T08:58:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/incoperfil.com\/wp-content\/uploads\/2024\/04\/7YC0957_re02-2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"695\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/incoperfil.com\\\/en\\\/guia-tecnica\\\/12-materials-of-composite-decking\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/incoperfil.com\\\/en\\\/guia-tecnica\\\/12-materials-of-composite-decking\\\/\"},\"author\":{\"name\":\"arquitectura\",\"@id\":\"https:\\\/\\\/incoperfil.com\\\/en\\\/#\\\/schema\\\/person\\\/b8bfc6f085f60fa29309768b0abeb4df\"},\"headline\":\"12. 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