Lub ntsiab lus tseem ceeb ntawm 201 phaj hlau tsis huv yog 17Cr-4.5Ni-6Mn-N, uas yog Ni-puab hlau, uas yog lwm txoj hauv kev rau 301 hlau. Tom qab qee lub sijhawm ua haujlwm txias, yuav tau txais cov hlau nplaum thiab siv hauv cov tsheb ciav hlau. Cov phaj hlau tsis muaj hlau 304 tau ua tiav rau hauv 18Cr-9Ni, uas yog siv dav tshaj plaws cov phaj hlau tsis muaj hlau thiab cov hlau tiv taus cua sov hauv khw. Feem ntau siv hauv cov khoom siv ua zaub mov noj, ntau yam khoom siv tshuaj lom neeg, kev tsim hluav taws xob nuclear thiab kev tsim hluav taws xob nuclear, thiab lwm yam.
2. Qhov sib txawv ntawm cov ntsiab lus ntawm manganese thiab npib tsib xee:
201 cov hlau tsis muaj steel muaj cov qib manganese siab, cov hlau phaj tau ci thiab muaj lub teeb ci, tab sis yog tias cov ntsiab lus manganese siab, nws yooj yim dua rau xeb. Cov phaj 304 tsis muaj xim hlau muaj cov ntsiab lus siab chromium, thiab saum npoo ntawm cov phaj hlau dav dav yuav tshwm rau sab, thiab nws tsis yooj yim rau xeb. Qhov tseem ceeb ntawm ob daim hlau hlau yog qhov sib txawv hauv kev tiv thaiv corrosion. Kev tiv thaiv xeb tag nrho ntawm 201 yog qhov tsawg, nws yooj yim rau corroded, thiab nws yuav pheej yig dua raws li tus nqi. Ntxiv mus, cov ntsiab lus nickel ntawm 201 yog qis, thiab tus nqi feem ntau qis dua li ntawm 304 stainless hlau. Qhov sib txawv loj tshaj plaws ntawm 201 phaj steel hlau thiab 304 stainless hlau phaj yog qhov teeb meem ntawm npib tsib xee. Txawm li cas los xij, tus nqi ntawm 304 yog tus nqi kim dua me ntsis, thiab 304 cov hlau tsis muaj steel hlau tsawg kawg tuaj yeem khaws cia hauv ib qho kev siv yam tsis muaj xeb.
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