Ka whakamāramahia e mātou ngā āhuatanga matua i waenga i ngā rauemi e rua (te maitai ngawari, te maitai kore waikura rānei) i raro nei. He pakari ake te maitai kore waikura i roto i ngā āhuatanga tote, ā, ka taea te whakamahi i roto i te umanga kai, engari he kaha ake te maitai ngawari, ā, ka nui ake te pēhanga ki te puku noke.

maitai ngawari:
Ko te maitai ngawari, e mōhiotia ana ko te maitai waro, te momo maitai tino noa i roto i ngā whakamahinga katoa, ā, kāore he rerekētanga o ngā rawhi ngongo. Ko tētahi hoki o ngā momo maitai whānui e kapi ana i te whānuitanga o ngā āhuatanga miihini. Ko te tikanga o tēnei, mā te mārama me te tohu i te momo tika ka pā nui ki te mahi o te hua kua oti. Hei tauira, he tino rerekē ngā taumahatanga me ngā whakaritenga o ngā pepa maitai e hanga ana i ngā panera tinana motuka i ērā o ngā rauemi whakauru ngongo. Inaa, ko te whakatakotoranga rauemi rawhi ngongo tino pai kāore i te rite ki te anga me ngā whitiki.

Ko tētahi ngoikoretanga o te maitai ngawari ko tōna ātete ki te waikura tūturu. Ka taea tēnei te whakakore mā te paninga i tētahi paninga, ko te nuinga ko te konutea. Nā ngā rerekētanga o ngā tikanga paninga me ngā paerewa, ko te ātete ki te waikura tētahi wāhanga e rerekē ai ngā here o ngā ngongo. Ko te Paerewa Piritana mō ngā here o ngā ngongo e hiahia ana kia 48 hāora te ātete ki te waikura whero e kitea ana i roto i te whakamātautau rehu tote kūpapa 5%, ā, he maha ngā hua kite kāore i tohua kāore e tutuki i tēnei whakaritenga.

Kowiri tira:
He maha ngā āhuatanga uaua ake o te kowiri tira i te kowiri tira ngāwari, inā koa mō ngā rawhi ngongo, nā te mea he maha ngā kaihanga e aro nui ana ki te utu e whakamahi ana i te ranunga o ngā momo rauemi rerekē hei whakarato i tētahi hua me ngā utu hanga iti ake me te mahi iti iho.

He maha ngā kaihanga rawhi ngongo e whakamahi ana i te maitai kore waikura ferritic hei whakakapi i te maitai ngawari, hei whakakapi rānei i te maitai kore waikura austenitic, he iti te utu. Nā te mea kei roto i te koranu te chromium, kāore e hiahiatia he tukatuka tāpiri mō ngā maitai ferritic (e whakamahia ana i ngā reanga W2 me W3, i te raupapa reanga 400) hei whakapai ake i te ātete ki te waikura. Heoi, ko te kore, te iti rānei o te ihirangi nikara o tēnei maitai, ko te tikanga he iti iho ōna āhuatanga i ngā maitai kore waikura austenitic.

Ko ngā maitai kore waikura austenitic te mea tino ātete ki te waikura ki ngā momo waikura katoa, tae atu ki ngā waikawa, he whānui rawa te awhe pāmahana mahi, ā, kāore he aukume. Ko te tikanga, e wātea ana ngā momo 304 me te 316 o ngā topenga maitai kore waikura; e whakaaetia ana ngā rauemi e rua mō te whakamahinga moana me te whakaaetanga a Lloyd's Register, engari kāore e taea e ngā momo ferritic. Ka taea hoki te whakamahi i ēnei momo i roto i te umanga kai me te inu, i ngā wāhi kāore pea e whakaaetia te whakamahi i ngā maitai ferritic i ngā waikawa pēnei i te waikawa acetic, citric, malic, lactic me te tartaric.