Ferritic stainless hlau hais txog stainless hlau nrog 10.5% ~ 30% chromium cov ntsiab lus thiab tsis muaj npib tsib xee. Cov theem tseem ceeb, suav nrog 405, 409, 410, 430, 434, 439, 441, 445, 446, 447, feem ntau siv ntawm uas yog 409, 410, 430 series. Ferritic stainless hlau muaj chromium ntau dua li austenitic stainless hlau, yog kim dua thiab qee zaum siv tau los hloov cov khoom siv rau 304 lossis 200 series stainless hlau. Raws li cov ntsiab lus chromium, nws tuaj yeem muab faib ua peb pawg: Cr10% ~ 15%, Cr16% ~ 20%, thiab Cr21% ~ 30%.
10% -14% Cr: 409, 410L.
409,410 muaj cov ntsiab lus chromium qis tshaj plaws thiab yog qhov pheej yig tshaj ntawm tag nrho cov ferritic stainless hlau, thiab tsim nyog rau cov cheeb tsam uas tsis muaj corrosion los yog me me corrosion thiab localized me xeb. Hom 409 yog Ameslikas tsim tshwj xeeb rau automotive tso mufflers. 410L stainless hlau muaj cov ntsiab lus tsis tshua muaj carbon, zoo bending kev ua tau zoo ntawm welded qhov chaw, kev ua tau zoo, kub tsis kam thiab oxidation kuj. Nws yog feem ntau siv nyob rau hauv lub tsheb tso pa cua kho cov cuab yeej, boiler combustion chambers, nozzles, ntim, tsheb npav, thiab lwm yam. Nyob rau hauv xyoo tas los no, nws kuj yog siv raws li LCD Show ncej.
14%-18%Cr: 430, 430ti, 439, 434, 436, 444
430 yog cov feem ntau siv ferritic stainless hlau, thiab siab dua chromium muab nws zoo corrosion kuj. Hauv qee daim ntawv thov, 304 tuaj yeem hloov pauv. Kev siv ib txwm muaj xws li tshuab ntxhua khaub ncaws, cov vaj huam sib luag sab hauv, khoom siv hauv chav ua noj, kev lag luam zaub mov, thiab lwm yam.
430TI thiab 439 muaj stabilizing ntsiab Ti thiab Nb thiab muaj weldability zoo thiab formability. Cov ntawv thov muaj xws li kev lag luam khoom noj, cov cuab yeej hauv chav ua noj, cov khoom siv hluav taws xob sib txawv (qab zib, lub zog, thiab lwm yam), cov tshuab hluav taws xob siv hluav taws xob (lub sijhawm ua haujlwm ntev dua 409), thiab welded qhov chaw ntawm lub tshuab ntxhua khaub ncaws, lossis txawm hloov 304 rau kev thov ntau dua. 430Ti muaj qhov zoo dua vuam kev ua tau zoo, zoo dua intergranular corrosion kuj, sib sib zog nqus nqus kev ua tau zoo, zoo cuam tshuam toughness thiab qis dua nkig hloov kub dua 430 stainless hlau. Hom 439 feem ntau yog siv rau hauv kev kho vaj tsev kho kom zoo nkauj, tsheb tso tsheb thiab tshuab ntxhua khaub ncaws sab hauv. 441 stainless hlau muaj qhov kub thiab txias tsis kam thiab feem ntau siv rau hauv cov kav dej thiab cov kav dej hauv ntej ntawm cov kav dej. 434, 436 thiab 444 muaj molybdenum ntau dua thiab muaj zog corrosion kuj, nrog 444 muaj yuav luag tib yam corrosion kuj zoo li 316. Cov ntawv siv yog cov tso tsheb hlau luam dej kub, lub hnub ci dej tso cua sov, lub tsheb tso tsheb, hluav taws xob cua sov kettles thiab microwave qhov cub Cheebtsam, tsheb trim. strips thiab sab nraum zoov panels.
18%-30%: 446,445/447cr
Superferrite stainless hlau 446, 445/447 muaj ntau chromium thiab molybdenum, nws cov corrosion kuj thiab oxidation kuj zoo dua 316, thiab nws muaj Cl ion corrosion kuj zoo. Kev siv ib txwm muaj xws li cov ntug hiav txwv dej thiab lwm qhov chaw uas muaj corrosion-resistant heev
