Galvanization
Verified by SOLBE Structural Engineering Board
Definition
Galvanization is a metallurgical process where a protective coating of zinc is applied to iron or steel structures to prevent atmospheric corrosion, typically executed through hot-dip immersion.
Technical & Structural Breakdown
In hot-dip galvanization (HDG), clean fabricated steel is immersed in molten zinc at approximately 450°C. This forms a series of zinc-iron alloy layers that are harder than the base steel, topped by a pure zinc outer layer. For solar structures in C3 or C4 corrosive environments, IS 2629 and IS 4759 standards dictate the required coating thickness parameters based on material thickness to ensure a maintenance-free lifespan of over 25 years.
Engineering Specifications
| Compliance Standard(s) | IS 2629, IS 4759, ISO 1461, ASTM A123 |
|---|---|
| Primary Use Cases | Corrosion prevention for ground mount columns, purlins, base plates, and brackets installed in coastal environments. |
| Engineering Category | Corrosion Control |