Technical reference
Finishes & coatings
Hot-dip galvanizing, zinc plating and powder coating: how they work and what to specify.
Hot-dip galvanizing
Hot-dip galvanizing protects steel by immersing the cleaned, fluxed part in molten zinc at about 450 °C, forming zinc–iron alloy layers metallurgically bonded to the steel with a zinc layer on top.
Read the reference →Zinc electroplating
Zinc electroplating deposits a thin, even layer of zinc on steel from an electrolyte bath, usually 5–25 µm thick, and is normally sealed with a chromate passivate.
Read the reference →Powder coating
Powder coating applies a dry, electrostatically charged resin powder to pre-treated steel and cures it in an oven into a continuous film, typically 50–125 µm thick.
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