Failure of a piece of steel under tensile loading

This is a close-up video of a tensile test of a miniaturized specimen. The width of the parallel length is about 3.4 mm, the thickness of the specimen is about 1 mm and the length of the parallel section is about 5 mm. The maximum achieved load before failure was about 1000-11000 N. The total elongation was about 3 mm (~60%), but this includes the slack of the machine as well, so in reality, the total elongation is somewhat lower. I recorded the video with a Sony A6000 camera using a macro extension bellow and a Jupiter 9 85 mm f2 lens. The video is a real-time video. The rate of the deformation (in terms of the speed of the crossheads) was about 2 mm/min.