Ko te kowiri tira super duplex pērā i te duplex he hanganga moroiti whakaranu o te austenite me te ferrite kua kaha ake i ngā momo maitai ferritic me te austenitic. Ko te rerekētanga matua ko te nui ake o te molybdenum me te chromium o te super duplex e nui ake ai te ātete ki te waikura o te rauemi. He rite tonu ngā painga o te super duplex ki tōna hoa – he iti ake ngā utu whakaputa ina whakaritea ki ngā momo ferritic me te austenitic rite tonu, ā, nā te mea kua piki ake te kaha kume me te kaha hua o ngā rauemi, i roto i te nuinga o ngā wā ka hoatu e tēnei ki te kaihoko te kōwhiringa pai ki te hoko i ngā matotoru iti ake me te kore e hiahia ki te whakararu i te kounga me te mahi.

Ngā Āhuatanga:
1. Ātete tino pai ki te waikura o te poka me te kapiti i roto i te wai moana me ētahi atu taiao kei roto te hauota, me te pāmahana poka nui neke atu i te 50°C
2. He tino pai te ngāwari me te kaha pānga i ngā pāmahana taiao me raro i te kore
3. Ātete teitei ki te pakarukaru, te horo me te horo cavitation
4. Ātete pai ki te pakaru waikura ahotea i roto i ngā taiao kei roto te hauhāora
5. Whakaaetanga ASME mō te tono oko pēhanga