Ultimate strength and plastic deformation capacity of pipe members for spherical graphite cast iron under flexural moment

Spherical graphite cast iron is not allowed to use the structural members, because its ductility is considered to be very low. On the other hand, this iron is often used to automobile parts to have high machinability and high damping, and machined specimen of spherical graphite cast iron has high ductility. This paper investigates the possibility to apply the members such as gravity columns in the structures. In this paper, the monotonic and cyclic loading tests are performed, and the ultimate strength and plastic deformation capacity of pipe members for spherical graphite cast iron are estimated.