Lub high-alloy steel uas muaj peev xwm tiv taus corrosion nyob rau hauv cov huab cua los yog nyob rau hauv chemically corrosive media, Stainless hlau muaj zoo nkauj tsos thiab zoo corrosion kuj. Nws tsis tas yuav tsum tau kho qhov chaw xws li xim plating, thiab ua rau lub hauv paus ntawm cov khoom siv hlau tsis huv. Nws yog siv ntau hom hlau, feem ntau hu ua stainless hlau.
Cov khoom sawv cev yog cov hlau alloy siab xws li 13-chromium steel thiab 18-chromium-nickel steel.
Los ntawm metallographic point of view, vim hais tias stainless hlau muaj chromium, ib tug nyias chromium zaj duab xis yog tsim nyob rau saum npoo.
Yuav kom tswj tau qhov kev tiv thaiv corrosion ntawm cov hlau tsis muaj steel, cov hlau yuav tsum muaj ntau tshaj 12 feem pua chromium.
304yog lub hom phiaj dav dav hlau stainless uas tau siv dav los ua cov cuab yeej siv thiab cov khoom uas xav tau kev ua tau zoo tag nrho (corrosion resistance and formability).
301 stainless hlau nthuav qhia pom kev ua haujlwm nyuaj thaum lub sijhawm deformation, thiab siv rau ntau lub sijhawm uas xav tau lub zog ntau dua.
302 stainless hlau yog qhov tseem ceeb ntawm 304 stainless hlau nrog cov ntsiab lus carbon ntau dua, uas tuaj yeem tau txais lub zog ntau dua los ntawm kev txias txias.
302B yog cov hlau tsis muaj hlau uas muaj cov ntsiab lus siab silicon, uas muaj kev tiv thaiv siab kub oxidation.
303 thiab 303Se yog dawb-txiav stainless hlau uas muaj leej faj thiab selenium, feem, thiab yog siv nyob rau hauv daim ntawv thov qhov twg dawb-txiav thiab siab nto tag yog tsuas yog yuav tsum tau. 303Se stainless hlau kuj tseem siv los ua qhov chaw uas yuav tsum tau kub ntxhov, vim tias nyob rau hauv cov xwm txheej no, cov hlau tsis muaj steel muaj qhov kub zoo ua haujlwm.
304L yog ib qho qis carbon sib txawv ntawm 304 stainless hlau siv qhov twg vuam yuav tsum tau. Cov ntsiab lus qis dua txo qis carbide nag lossis daus nyob rau hauv thaj chaw uas muaj kev kub ntxhov nyob ze ntawm qhov vuam, uas tuaj yeem ua rau muaj kev cuam tshuam ntawm intergranular corrosion (weld erosion) ntawm stainless hlau hauv qee qhov chaw.
304N yog cov hlau tsis muaj nitrogen, thiab nitrogen ntxiv los txhim kho lub zog ntawm cov hlau.
305 thiab 384 stainless hlau muaj cov nickel siab thiab muaj qhov ua haujlwm qis qis, ua rau lawv tsim nyog rau cov ntawv thov uas yuav tsum tau ua kom txias txias.
308 stainless hlau yog siv los ua electrodes.
Cov nickel thiab chromium cov ntsiab lus ntawm 309, 310, 314 thiab 330 stainless hlau yog qhov siab, txhawm rau txhim kho oxidation tsis kam thiab creep lub zog ntawm cov hlau ntawm qhov kub thiab txias. 30S5 thiab 310S yog qhov txawv ntawm 309 thiab 310 stainless hlau, qhov sib txawv tsuas yog tias cov ntsiab lus carbon tsawg dua, txhawm rau txo qis nag lossis daus ntawm carbides ze ntawm qhov vuam. 330 stainless hlau muaj qhov tshwj xeeb siab ua haujlwm rau carburization thiab thermal shock resistance.
Hom 316 thiab 317 stainless hlau muaj cov txhuas thiab yog li ntawd tiv taus pitting corrosion ntau dua li 304 stainless hlau nyob rau hauv marine thiab tshuaj lom neeg kev lag luam ib puag ncig. Ntawm lawv, qhov txawv ntawm hom 316 stainless hlau muaj xws li cov pa roj carbon tsawg 316L, nitrogen-muaj zog stainless hlau 316N, thiab dawb-txiav stainless hlau 316F nrog cov ntsiab lus sulfur siab.
321, 347 thiab 348 yog stainless hlau stabilized nrog titanium, niobium ntxiv rau tantalum thiab niobium feem, haum rau vuam Cheebtsam siv nyob rau hauv high kub. 348 yog ib hom stainless hlau haum rau kev lag luam hluav taws xob nuclear, uas muaj qee yam kev txwv ntawm kev sib xyaw ntawm tantalum thiab pob zeb diamond.
