| 摘要 |
PROBLEM TO BE SOLVED: To provide a forming with a clear ridge line and a superior design, which is processed and formed with a cold roll forming machine and is often used for parts such as building materials, furniture for a office, and a frame of a wagon cart. SOLUTION: This forming comprises employing an austenite based stainless steel with 0.2% yield stress of 300 N/mm2 or less and work hardening rate of 3000 N/mm2 or less as a raw material, and that width w of a corner of an obtuse angle side formed with the cold roll forming is 60% or less of a steel sheet thickness t. The austenite based stainless steel employed as the raw material includes 0.07% or less C+N, 2.0% or less Si, 5.0% or less Mn, 5.0% or less Cu by mass% and other normal components.
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