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U. S.
Steel Hot-Dip Galvanized Sheet is carbon steel sheet coated with
zinc on two sides by the continuous hot-dip process. The process results in a
layer of zinc on each side of the steel sheet that is tightly
adhering to the steel through the formation of an iron-zinc alloy
bonding layer that is formed by a diffusion process while the
heated steel strip is in contact with the molten zinc.
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Hot-dip coated galvanized steel sheet is available from U. S. Steel
in many ways including a comprehensive range of sheet widths and
thicknesses, metallurgical designations (a range of strengths and
formability levels), coating weights (thicknesses), surface
finishes, and surface treatments for enhanced performance. The
surface treatments can provide enhanced resistance to staining,
improved formability, and/or improved paintability.
Galvanized sheet can be used bare, prepainted or postpainted.
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U. S. Steel Hot-Dip Galvanized sheet lends itself to most fabrication
processes; it can be roll- and brake-formed, lock-seamed, deep
drawn, and stretched. It can be joined by various methods
including adhesive
bonding, riveting, soldering and welding. In general,
galvanized sheet can be handled and processed much the same as
uncoated flat-rolled sheet although different setups for stamping,
welding, etc. have to be developed. As a result, the designer
and materials specifier have a good range of practical choices- the strength of the
steel,
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its formability, the corrosion resistance, and the fabrication and
joining process- to match galvanized material to the end
use.
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