{"id":28187,"date":"2026-08-13T09:42:02","date_gmt":"2026-08-13T12:42:02","guid":{"rendered":"https:\/\/chousa.com.ar\/?p=28187"},"modified":"2026-08-13T10:30:38","modified_gmt":"2026-08-13T13:30:38","slug":"galvanizado-en-caliente-vs-zinc-laminar-en-buloneria-estructural","status":"publish","type":"post","link":"https:\/\/chousa.com.ar\/en\/galvanizado-en-caliente-vs-zinc-laminar-en-buloneria-estructural\/","title":{"rendered":"Hot-Dip Galvanizing vs. Zinc Flake Coating for Structural Fasteners"},"content":{"rendered":"

In this article:<\/mark><\/strong><\/h4>\n\n\n\n
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  • What structural fasteners are and which standards apply<\/mark><\/strong><\/li>\n\n\n\n
  • Hot-dip galvanizing: advantages and limitations<\/mark><\/strong><\/li>\n\n\n\n
  • Zinc flake coating: advantages for structural fasteners<\/mark><\/strong><\/li>\n\n\n\n
  • Hot-Dip Galvanizing vs. Zinc Flake Comparison Table<\/mark><\/strong><\/li>\n\n\n\n
  • Industry Applications<\/mark><\/strong><\/li>\n<\/ul>\n\n\n\n

    <\/p>\n\n\n\n

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    Structural Fasteners and Their Critical Role<\/mark><\/strong><\/h2>\n\n\n\n

    In steel structures, structural fasteners are not a secondary component. They are what holds the structure together\u2014under static loads, dynamic loads, vibration, and constant environmental exposure.<\/p>\n\n\n\n

    A failure in a structural fastener is not a minor issue. It can compromise the integrity of the entire structure, generate significant maintenance costs, and, in critical cases, represent a risk to operational safety.<\/p>\n\n\n\n

    For this reason, selecting the corrosion protection system for structural fasteners is an engineering decision that deserves the same level of attention as selecting the steel grade or designing the joint itself.<\/p>\n\n\n\n

    Most Common Types of Structural Bolts<\/mark><\/strong><\/h4>\n\n\n\n

    Structural fasteners are governed by ASTM standards that define their mechanical properties and applications.<\/p>\n\n\n\n

    Standard<\/mark><\/strong><\/td>Description<\/mark><\/strong><\/td>Typical Application<\/mark><\/strong><\/td><\/tr>
    ASTM A325<\/td>High-strength structural bolt<\/td>Primary connections in steel structures<\/td><\/tr>
    ASTM A490<\/td>Very high-strength alloy steel bolt<\/td>Applications subjected to very high loads<\/td><\/tr>
    ASTM A307<\/td>Low-strength common bolt<\/td>Secondary connections and light structures<\/td><\/tr>
    ASTM A394<\/td>Bolt for transmission towers<\/td>Electrical transmission towers and communication structures<\/td><\/tr>
    ASTM A354<\/td>High-strength anchor bolt<\/td>Heavy-duty anchor bolt applications<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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    <\/p>\n\n\n\n

    Hot-Dip Galvanizing for Structural Fasteners<\/mark><\/strong><\/h2>\n\n\n\n

    Hot-dip galvanizing has historically been the most widely used corrosion protection system for steel structures. It consists of immersing the parts in molten zinc at approximately 450\u00b0C, forming a zinc-iron alloy coating that provides corrosion protection.<\/p>\n\n\n\n

    Advantages<\/mark><\/strong><\/h4>\n\n\n\n