Rockett, Frank H. Engineering Consultant, Charlottesville, Virginia.
- Additional Readings
The generic term for any of several techniques for applying thin coatings of zinc to iron or steel stock or finished products to protect the ferrous base metal from corrosion; more specifically, the hot dipping that is widely practiced with mild steel sheet for garbage cans and corrugated sheets for roofing, sheathing, culverts, and iron pipe; and with fencing wire. During dipping, molten zinc reacts with the steel to form a brittle zinc-iron alloy. Control of temperature and the addition of aluminum reduce formation of the alloy, resulting in a more ductile coating. For marine use, magnesium is added.
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