siirdetemperatuur temperatuurivahemikus, kus metalli (materjali) purunemise iseloom (määratakse tavaliselt löökpaindel) muutub plastselt hapramaks sh plastse murde siirdetemperatuur, hapra murde siirdetemperatuur, plastse-hapra murde siirdetemperatuur, plastsussiirdetemperatuur (vt siirdetemperatuur, plastne-habras siire/külmahaprumine, plastse murde siirdetemperatuur, hapra murde siirdetemperatuur, plastse-hapra murde siirdetemperatuur, plastsussiirdetemperatuur), an arbitrarily defined temperature that lies within the temperature range in which metal (or other material) fracture characteristics (as usually determined by tests of notched specimens) change rapidly, such as fracture transition plastic (FTP) temperature, nil-ductility temperature (NDT), fracture appearance transition temperature (FATT), ductility transition temperature (DTT) (see: transition temperature, ductile-to-brittle transition temperature, fracture transition plastic temperature, nil-ductility temperature, fracture appearance transition temperature, ductility transition temperature)