304 vs . 316 Stainless Steel: Nqi, Durability & Industrial Suitability

Q: Vim li cas 316 stainless hlau kim dua 304?A: 316 stainless hlau nqi 20-30% ntau dua 304 feem ntau vim nws muaj molybdenum (tus nqi siab alloying ntsiab) thiab muaj cov ntsiab lus ntau dua nickel. Cov khoom ntxiv no txhim kho nws cov khoom tab sis nce cov khoom siv raw thiab cov nqi tsim khoom.

 

Q: Nyob rau hauv ib puag ncig twg yog 304 stainless hlau tsawg dua 316?A: 304 tsis tshua muaj zog dua 316 hauv chloride- thaj chaw nplua nuj (piv txwv li, dej ntsev, thaj chaw ntug dej hiav txwv, lossis cov kab ke tuav cov brine) thiab cov kua qaub. Chlorides tuaj yeem ua rau pitting corrosion hauv 304, thaum 316 cov ntsiab lus molybdenum tiv thaiv qhov kev puas tsuaj.

 

Q: Rau cov khoom siv ua zaub mov, qib twg (304 lossis 316) zoo dua, thiab vim li cas?A: Ob leeg siv, tab sis 316 yog qhov zoo dua rau cov khoom siv tuav cov khoom noj acidic (xws li, pickles, citrus juices) lossis siab -moisture, huv ib puag ncig. 304 ua haujlwm zoo rau qhuav lossis nruab nrab- cov ntawv thov zaub mov (xws li, cov khoom siv citrus) kom txo tau cov nqi.

 

Q: Lub zog tensile ntawm 304 piv rau 316 li cas, thiab qhov no puas cuam tshuam rau lawv cov kev lag luam?A: 304 muaj lub zog tensile ntawm ~ 515 MPa, thaum 316 muaj ~ 550 MPa (qhov sib txawv 7%). Qhov sib txawv me me no txhais tau hais tias ob qho tib si haum rau feem ntau cov qauv kev lag luam siv (xws li, thav duab, kav dej), tab sis 316 yog qhov zoo dua rau siab -kev nyuaj siab, corrosive load-cov kabmob.

 

Q: Thaum twg yuav xaiv 304 tshaj 316 yog qhov kev txiav txim siab zoo dua?A: 304 yog qhov zoo dua thaum daim ntawv thov suav nrog qhov chaw qhuav, me me (xws li, cov khoom siv hauv tsev, tsis yog -cov kav dej corrosive) thiab txo nqi yog qhov tseem ceeb. Nws muaj kev ruaj khov txaus rau qhov tsawg -xav tau qhov xwm txheej thaum txo cov nuj nqis hauv qhov project.