1. Known as high-strength, low-alloy steel
(HSLA), this is a class of low–alloy steels with increased mechanical properties and resistance to atmospheric corrosion that are obtained by adding moderate amounts of alloying elements other than carbon. Galvanized flat steel sheets (HSLA) are coated with zinc by the continuous hot–dip process. Physical, not chemical, can also be used to achieve high strength traits.

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