rauasulamite metallurgiline defekt; terase kuumtöötlemistemperatuurilt jahtumisel vesinikust põhjustatud sisemised lühikesed mittepidevad submikroskoopilised praod (vrd liblemetall), a short discontinuous internal cracks in ferrous metals associated with the presence of hydrogen such as may be formed in steel during cooling from high temperature after hot working (compae: flake)