Uthini umahluko phakathi kwe-430 kunye ne-439 yensimbi engenasici?

Insimbi engagqwali yimathiriyeli ye-alloy esetyenziswa kakhulu kubomi bemihla ngemihla kunye nemveliso yemizi-mveliso, kwaye ithandwa ngenxa yokumelana nokugqwesa kwayo okugqwesileyo kunye namandla. Phakathi kweentlobo ezininzi zensimbi engenasici, i-430 kunye ne-439 zimbini iintlobo eziqhelekileyo, kodwa kukho ukungafani okubalulekileyo phakathi kwabo.

Ukusuka kwindawo yokujonga iikhemikhali

I-430 insimbi engenasici i-alloy equkethe i-16-18% ye-chromium kwaye akukho nickel. Oku kunika ukuxhathisa okugqwesileyo kokutya kwezinye iindawo, ngakumbi kwimidiya ye-oxidizing. I-439 insimbi engenasici i-alloy equkethe i-17-19% ye-chromium kunye ne-2-3% ye-nickel. Ukongezwa kwe-nickel akugcini nje ukuphucula ukunyanzeliswa kwe-corrosion yezinto eziphathekayo, kodwa kwandisa ukuqina kwayo kunye nokuqhubekeka.

Ngokumalunga neempawu zomzimba

I-430 insimbi engenasici yintsimbi ye-martensitic enobunzima obuphezulu kunye namandla, kodwa i-ductility ephantsi kunye nokuqina. Oku kuyenza ilunge ngakumbi kwizicelo ezithile apho kufuneka amandla aphezulu. I-439 insimbi engenasici luhlobo lwentsimbi ye-austenitic, ene-ductility efanelekileyo kunye nokuqina, inokumelana nokuguqulwa okukhulu kwaye akukho lula ukuphuka.

Ukongeza, kukho ukungafani phakathi kwezi zimbini kwintsimi yesicelo. Ngenxa yokumelana ne-corrosion kunye namandla aphezulu angama-430 ensimbi engenasici, isoloko isetyenziselwa ukuveliswa kweenkqubo zokukhupha iimoto, oomatshini bokuhlamba, i-kitchenware kunye nezinye izinto ezifunekayo ukumelana nokushisa okuphezulu kunye neendawo ezinobungozi. I-439 insimbi engenasici isetyenziswa kakhulu kwi-petrochemical, izixhobo zonyango, ukulungiswa kokutya kunye nezinye iindawo ngenxa yeempawu zayo ezilungileyo zokulungisa kunye nokuxhathisa ukubola.

Isishwankathelo, i-430 kunye ne-439 insimbi engenasici inomahluko othile ekubunjweni kweekhemikhali, iipropati ezibonakalayo kunye neendawo zokusetyenziswa. Ukuqonda le yantlukwano kusinceda ukuba sikhethe ngcono kwaye sisebenzise izinto zensimbi ezingenasici ukuhlangabezana neemfuno zeendawo ezahlukeneyo kunye nokusetyenziswa.