Abstract: A scrap shearing machine suitable for cutting up plate-like scrap material comprises two pairs of knives each pair of which consists of a movable knife and a stationary knife. The pairs are arranged to cut the scrap material successively and the knives of one pair are set to cut in a plane which lies at an angle of preferably at least 30.degree. to the plane of cut of the knives of the other pair. The movable knives are carried on supports which are arranged counter to each other and are movable independently of each other and inlet and outlet openings are provided in a housing within which the knives operate. The inlet opening which is for the scrap material to be cut and the outlet opening which is for the cut pieces of scrap are aligned with each other, one opening being on one side of the cutting plane of one pair of knives and the other opening being on the remote side of the cutting plane of the other pair of knives.