Adjustable high-ductility metal damper

The utility model provides an adjustable high-ductility metal damper, which relates to the technical field of dampers and comprises a shell, an end cover is mounted at one end of the shell, a piston rod is arranged on the surface of the end cover in a penetrating manner, a support a is fixedly mounted at one end of the piston rod, and a damping spring is arranged on the outer side of the piston rod in the shell. A threaded column is fixedly installed on the inner surface of the shell, a T-shaped internal thread sleeve is arranged on the outer side of the threaded column, external threads are formed in the outer surface of the T-shaped internal thread sleeve, a nut is arranged on the outer side of the T-shaped internal thread sleeve, and a connecting block can be installed on the T-shaped internal thread sleeve through mutual matching of the external threads and the nut. And the T-shaped inner threaded sleeve can rotate on the threaded column, so that the distance between the connecting block and one end of th