Cold-formed steel sections have higher yield strength compared to hot-rolled sections of the same nominal grade due to:
Choose the correct answer
Higher carbon content
Strain hardening during the cold-forming process
Thicker web plates
Heat treatment
Correct Answer
B. Strain hardening during the cold-forming process
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Cold-forming (roll-forming or press-braking at room temperature) causes strain hardening at the bend corners, increasing the yield strength locally. IS 801 governs design of cold-formed steel structures. Sections are thin-walled and susceptible to local buckling.
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