Esimweni sansuku zonke sasekhaya, sivame ukubona amagama athi 316 noma 304 kwezinye izikulufu zensimbi engagqwali, inhliziyo iba nokungabaza: “316 stainless steel screws and 304 what good?” Kwangathi ngifisa ukuqhubeka nokuhlaziya nokuhlola kochwepheshe kusukela ekusebenzeni okuphelele, inzuzo yesikulufu sensimbi engagqwali engu-316 isobala kakhulu.

Ukuhlaziywa kokuqala kokwakheka, isikulufu sensimbi engagqwali esingu-316 kune-304 ngaphezu kwento eyodwa ye-molybdenum Mo, kuthuthukisa ukumelana nokugqwala kwe-screw 316 yensimbi engagqwali, ukumelana nokushisa okuphezulu, ukuzivumelanisa nemvelo kuba kubanzi. Ezimweni eziyinkimbinkimbi ezihlukene embonini, kusetshenziswa izikulufu zensimbi engagqwali ezingama-316 nezikulufu zensimbi engagqwali ezingama-304 ezinemininingwane efanayo. Ngemva kwesikhathi sokusebenza, izikulufu zensimbi engagqwali ezingu-304 zizovela ezinye izindawo zokugqwala noma ukuwohloka, futhi izikulufu zensimbi engagqwali ezingu-316 azinakho okungavamile.

Ngoba ukusebenza okuphelele kwezikulufu zensimbi engagqwali ezingama-316 kuhle kakhulu, zisetshenziswa kakhulu ekudleni, ezimbonini nasezintweni zokuhlinza. Ukuze kuzuzwe ukumelana nokugqwala okuhle kakhulu, ekukhiqizeni izikulufu zensimbi engagqwali ezingu-316, abakhiqizi bazocabangela ukwengeza insimbi ye-molybdenum, ukuze isakhiwo socingo lonke sibe noshintsho oluthile, ukuze kufinyelele inani elijwayelekile lokumelana nokugqwala. Ekwenziweni kwezinye iziqukathi zamakhemikhali, kuzosetshenziswa izikulufu zensimbi engagqwali ezingu-316, futhi ukubukeka ngeke kushintshe ngemva komoya nemvula. Ngemuva kokubona izimboni ezahlukene, izikulufu zensimbi engagqwali ezingu-316 seziphenduke enye yezinto ezisetshenziswa kakhulu ze-Hardware zensimbi yaseMarine.

Insimbi engagqwali ihlukahlukene futhi icwengisisiwe, ukuthi izikulufu zensimbi engagqwali ezingama-316 zingezensimbi engenasici ye-austenitic, ngosizo lwe-Mo element, ukumelana nokushisa okuphezulu kwafinyelela kuma-degrees ayi-1200-1300, i-304 iwuphawu lwaseMelika lwensimbi engagqwali ye-austenitic evamile. Kunomehluko omkhulu ekumelaneni nokugqwala, ukumelana ne-oxidation, ukumelana nokushisa okuphezulu nokuphansi kanye namandla aqinile. Uma izimo zomnotho zivuma, noma sebenzisa izikulufu zensimbi engagqwali ezingu-316 kuzoba kuhle kakhulu.