Whakamahia ngātahi i ngā kaiwhakarite, ngā rokiroki, inki, hēkenga, āporo whakatupu, me era atu hekenga. Ko te ika o te kōpū tīnana i hanga i te whero pai 304 rānei ko 316L tīnana poro nui, e ai ki te pai tonu te manawa whē wheoro, me te mana whē māhina, ka taea te mahi pūmau i waenganui i ēnei taiao. Anō he mea, ko tōna whatitanga, tōna kaha whakamuri, tōna whenua whakaputuao, me tōna totohu pai, ka taea te takoha i ngā hiahia moe rokiroki me te tuku.