Dab tsi yog qhov txawv ntawm 321 thiab 304 cov ntaub ntawv?

1. Cov khoom sib txawv
304 stainless hlau: Cov khoom tseem ceeb muaj xws li hlau, chromium thiab npib tsib xee, uas cov ntsiab lus chromium ntau dua 18% thiab cov ntsiab lus npib tsib xee ntau dua 8%. Qhov no alloy muaj pes tsawg leeg ua rau 304 stainless hlau muaj zoo corrosion kuj thiab formability.
321 stainless hlau: Nws kuj muaj hlau, chromium thiab npib tsib xee ua cov khoom tseem ceeb, tab sis titanium lossis niobium cov ntsiab lus tau ntxiv rau nws cov alloy muaj pes tsawg leeg. Tshwj xeeb, cov ntsiab lus chromium hauv 321 stainless hlau yog li 17%, cov ntsiab lus nickel yog li 9%, thiab nws muaj li ntawm 0.3% titanium. Qhov sib ntxiv ntawm cov ntsiab lus no ua rau 321 stainless hlau muaj lub zog zoo dua thiab nkag mus rau hauv qhov kub thiab txias.

2. Mechanical khoom sib txawv
304 stainless hlau: Nws qhia tau hais tias zoo zog, ductility thiab toughness ntawm chav tsev kub thiab yog ib tug neeg sawv cev ntawm dav hlau stainless.
321 stainless hlau: Vim muaj cov titanium los yog niobium cov ntsiab lus, nws lub zog thiab creep zog ntawm qhov kub thiab txias yog zoo dua 304 stainless hlau. Nyob rau hauv ib puag ncig kub, 321 stainless hlau tuaj yeem tswj cov khoom siv kho tshuab zoo dua thiab tsim nyog rau kev siv kub.
3. Corrosion kuj txawv
304 stainless hlau: Nws qhia tau hais tias zoo corrosion kuj nyob rau hauv ib puag ncig tej yam kev mob thiab yog dav siv nyob rau hauv ntau industries. Txawm li cas los xij, nws cov kev tiv thaiv corrosion kuj yuav cuam tshuam rau qee yam hauv cov xov xwm corrosive heev lossis qhov chaw kub kub.
321 stainless hlau: Ntxiv rau qhov muaj kev tiv thaiv corrosion piv rau ntawm 304 stainless hlau, nws nthuav tawm superior corrosion kuj nyob rau hauv qhov kub thiab txias heev corrosive media ib puag ncig. Qhov no yog vim qhov sib ntxiv ntawm titanium los yog niobium cov ntsiab lus pab txo qis intergranular corrosion thiab txhim kho tag nrho corrosion kuj ntawm cov khoom.
4. Qhov sib txawv ntawm thaj chaw thov
304 stainless hlau: Vim nws zoo corrosion kuj thiab formability, nws yog dav siv nyob rau hauv kev lag luam thiab rooj tog kho kom zoo nkauj industries nrog rau cov zaub mov thiab kev kho mob industries. Cov teb no muaj cov kev xav tau siab rau kev tiv thaiv corrosion thiab kev ua haujlwm ntawm cov khoom.
321 stainless hlau: Vim nws zoo heev kub siab rupture kev ua tau zoo thiab kub creep tsis kam, nws yog tsim nyog rau tsim welded Cheebtsam siv nyob rau hauv high kub. Piv txwv li, kev siv nyob rau hauv qhov kub thiab txias ib puag ncig xws li roj av pa roj combustion pipelines, cav tso kav, thiab boiler plhaub.