He waea papatahi niti SMA superelastic āhua nitinol konukōre mahara mō te poroporo
Ko te Nickel Titanium (e mōhiotia ana ko te Nitinol, ko te NiTi rānei) kei roto i te akomanga ahurei o ngā koranu mahara āhua.
Ko te panonitanga āhua martensitic thermoelastic i roto i te rauemi te take o ōna āhuatanga whakamiharo. Ko ngā koranu nitinol he mea hanga i te 55%-56% Nikara me te 44%-45% Taitānia. Ka pā nui ngā panoni iti ki te hanganga o te rauemi.

E rua ngā momo matua o te Nitinol.
Ko te tuatahi, e mōhiotia ana ko "SuperElastic", e tohuhia ana e ngā taumahatanga whakaora tino pai me te ātete ki te piko.
Ko te tuarua o ngā kāwai, ko ngā koranu "Shape Memory", e whakanuia ana mō te kaha o te Nitinol ki te whakahoki mai i te āhua kua whakaritea i mua i te weranga i runga ake i tōna pāmahana whakawhiti. Ko te kāwai tuatahi e whakamahia ana mō ngā mahi orthodontic (ngā whīwhiwhi niho, ngā waea, me ētahi atu) me ngā mōhiti kanohi. Ko ngā koranu shape memory, he mea tino whai hua mō ngā actuators, e whakamahia ana i roto i ngā taputapu miihini maha.