Recently, the use of duplex stainless steel which has a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel has been increased in a variety of industrial fields. Especially, STS329FLD with lower nickel content and higher yield strength compared with austenitic stainless steel has been developed. In this paper, experiments have been conducted to investigate the structural behaviors of single shear duplex stainless steel(STS329FLD) bolted connection with four bolts. Specimens with relatively long end distance failed by block shear fracture accompanied with curling (out-of-plane deformation) and the curling reduced the ultimate strength.

• 최만호(한밭대학교 건축공학과 학사과정) | Choi Man Ho
• 황보경(한밭대학교 건축공학과 석사과정) | Hwang Bo Kyung
• 이후창(한밭대학교 건축공학과 석사과정) | Lee Hoo Chang
• 김진원(포스코 철강솔루션 마케팅실, 구조연구그룹, 책임연구원, 공학박사) | Kim, Jin Won
• 김태수(한밭대학교 건축공학과 교수, 공학박사) | Kim, Tae Soo Corresponding author