High Strength Low-Alloy steel (HSLA) is different than carbon steel because the mechanical properties provide greater resistance to corrosion. HSLA steels are unique because they are not made to meet a specific chemical composition but rather to a specific mechanical properties, Copper, silicon, nickel, chromium, and phosphorus are added to increase corrosion resistance. Other rare elements like Zirconium and calcium are added to increase formability. These steels are used for structures designed to handle large amounts of stress. ( cars, trucks, cranes, bridges, roller coasters etc.)HSLA


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