He aha te maitai takirua?

Ko te maitai takirua e pā ana ki tētahi whānau maitai kore waikura he hanganga moroiti e rua-wāhanga kei roto ko ngā wāhanga austenitic (hanganga karaihe poraka e anga ana ki te mata) me ngā wāhanga ferritic (hanganga karaihe poraka e anga ana ki te tinana). Ka tutukihia tēnei hanganga takirua-wāhanga mā te hanganga koranu motuhake kei roto ko ngā huānga pēnei i te chromium, te nickel, te molybdenum, me te hauota.
Ko ngā maitai kore waikura takirua e tino kitea ana nō te raupapa UNS S3XXX, ko te "S" te tikanga mō te kore waikura, ā, ko ngā tau e tohu ana i ngā hanganga koranu motuhake. Mā te hanganga iti e rua-wāhanga ka whakawhiwhia he huinga o ngā āhuatanga e hiahiatia ana, ka pai ai te maitai takirua mō ngā tono maha. Ko ētahi o ngā āhuatanga matua o te maitai takirua ko:
1. Ātete ki te Waikura: He tino pai te ātete o te maitai takirua ki te waikura, inā koa i roto i ngā taiao uaua kei roto ngā pūhaumāota. Nā tēnei he pai mō te whakamahi i roto i te tukatuka matū, te hinu me te hau, me ngā mahi moana.
2. Kaha Teitei: Ki te whakaritea ki ngā maitai kore waikura austenitic, he kaha ake te maitai takirua, ā, he pai mō ngā tono e hiahiatia ana he kaha ā-ringa nui ake.
3. Te Pakari me te Āhua Pai: Ka mau tonu te pakari me te āhua pai o te maitai takirua, ahakoa i ngā pāmahana iti. He mea nui tēnei huinga o ngā āhuatanga i roto i ngā tono ka pāngia te rauemi e ngā kawenga me ngā pāmahana rerekē.
4. Ātete ki te pakaru o te waikura ahotea: He pai te ātete o te maitai takirua ki te pakaru o te waikura ahotea, he momo waikura ka puta i raro i te awe o te ahotea kume me te taiao waikura.
5. Utu-whai hua: Ahakoa he nui ake te utu o te maitai takirua i te maitai kore waikura austenitic tuku iho, he maha ngā wā ka tika te utu mō ōna āhuatanga mahi, inā koa i ngā tono e tino hira ana te ātete ki te waikura me te kaha.
Ko ngā momo maitai kore waikura takirua noa kotakirua 2205 (UNS S32205)me te takirua 2507 (UNS S32750). E whakamahia whānuitia ana ēnei momo i roto i ngā ahumahi pēnei i te tukatuka matū, te tūhuratanga hinu me te hau, te miihini moana me te taiwhenua, me te hanga penupenu me te pepa.