An axially loaded compression member is cold formed from an AISI 1025 steel plate. A cross...

An axially loaded compression member is cold formed from an AISI 1025 steel plate. A cross-section of the member is shown in Figure. The metal at the corners of the member was strengthened by cold work. Determine the ultimate and yield strengths of the material prior to forming; the yield strength of the material at the corners of the section after cold forming; and the average yield strength of the section, accounting for the flat portions and the corners strengthened by cold work. Assume a compact section and a reduction factor ρ = 1.0 (Figure).