Ordinary Ferrite

Cov hom hlau no suav nrog qis qis, nruab nrab thiab siab chromium cov ntsiab lus. Tsis tshua muaj chromium ferritic stainless hlau muaj li 11% rau 14% chromium, xws li Tuam Tshoj' s 00Cr12, 0Cr13Al. Asmeskas AISI400, 405, 406MF-2 (saib cov lus). Cov hom steel muaj zoo toughness, plasticity, txias deformation thiab weldability. Vim tias cov hlau muaj qee qhov ntawm chromium thiab txhuas, nws muaj oxidation zoo ua hauj thiab xeb kuj. 405 tuaj yeem siv los ua roj av ua kom zoo nkauj ntauwd, roj hauv ob sab phlu, chav dej hauv lub tshuab pa, qhov kub thiab txias tshaj li cov khoom siv tiv thaiv corrosion, thiab lwm yam 400 tau siv los ua cov khoom siv hauv tsev thiab chaw ua haujlwm. 409 yog siv nyob rau hauv lub tshuab tso tsheb muffler system cov twj tso kua mis thiab cov kav dej txias thiab dej sov kom sov. Nruab nrab chromium ferritic stainless hlau, cov ntsiab lus chromium yog 14% rau 19%, xws li Tuam Tshoj' s 1Cr17, 1Cr17Mo. Miskas AISI429, 430, 433, 434, 435, 436, 439. Cov hlau no muaj xeb zoo dua thiab ua hauj corrosion. Nws txoj haujlwm ua haujlwm coefficient yog qhov me me (n≈2), thiab nws muaj cov duab kos sib sib zog nqus, tab sis nws cov ductility tsis yog. 430 yog siv los ua cov khoom vaj khoom tsev kho kom zoo nkauj, kho tsheb, kho kom zoo nkauj, khoom siv hauv chav ua noj, roj hlawv roj thiab khoom siv nitric acid muaj. 434 yog siv rau kev kho kom zoo nkauj sab nraud ntawm cov tsheb thiab cov tuam tsev. 439 yog siv los ua hoses rau cov tso cua sov tso dej, cov pa roj thiab cov raj xa dej, thiab lwm yam. High-chromium ferritic stainless hlau muaj 19% -30% chromium, xws li Cr18Si2, Cr25 hauv Suav Teb thiab AISI442, 443, thiab 446 hauv Tebchaws Meskas. Cov hom hlau no muaj oxidation zoo ua hauj. 442 siv tsis tu ncua nyob rau hauv huab cua, qhov kev txwv siab tshaj 1010 ℃, thiab qhov kub siab tshaj plaws rau kev siv txuas ntxiv yog 980 ℃. 446 muaj oxidation tsis kam zoo dua.