ISO X2CrTi 12 409L Stainless Hlau Tube

Stainless hlau feem ntau muab faib raws li nws lub koom haum: martensitic steel, ferritic steel, austenitic steel, thiab lwm yam. Tsis tas li ntawd, nws muaj peev xwm muab faib raws li nws muaj pes tsawg leeg: chromium stainless hlau, chromium-nickel stainless hlau, chromium-manganese-nitrogen stainless. steel, thiab lwm yam.
1. Ferritic stainless hlau: muaj 12% mus rau 30% chromium. Nws cov corrosion kuj, toughness thiab weldability nce nrog nce ntawm chromium cov ntsiab lus, thiab nws cov chloride kev nyuaj siab corrosion kuj zoo dua li lwm hom stainless hlau. Nyob rau hauv pawg no yog Cr17, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28, thiab lwm yam. Vim nws cov ntsiab lus chromium siab, ferritic stainless hlau muaj kuj zoo corrosion kuj thiab oxidation kuj, tab sis cov neeg kho tshuab tsis zoo thiab cov txheej txheem. Nws feem ntau yog siv hauv cov qauv acid-resistant nrog me ntsis kev ntxhov siab thiab ua cov hlau tiv thaiv oxidation. Hom hlau no tuaj yeem tiv thaiv corrosion los ntawm huab cua, nitric acid thiab ntsev dej daws, thiab muaj qhov kub thiab txias oxidation tsis kam thiab thermal expansion coefficient me me. Nws yog siv nyob rau hauv nitric acid thiab khoom noj khoom haus Hoobkas khoom, thiab kuj yuav siv tau los ua qhov chaw uas ua hauj lwm nyob rau hauv high kub, xws li roj turbine qhov chaw. .
2. Austenitic stainless hlau: muaj ntau tshaj 18% chromium, thiab tseem muaj li ntawm 8% npib tsib xee thiab ib qho me me ntawm molybdenum, titanium, nitrogen thiab lwm yam khoom. Nws muaj kev ua haujlwm zoo thiab tuaj yeem tiv taus corrosion los ntawm ntau yam xov xwm. Feem ntau siv qib ntawm austenitic stainless hlau suav nrog 1Cr18Ni9, 0Cr19Ni9, thiab lwm yam. Lub wC ntawm 0Cr19Ni9 steel yog<0.08%, and the steel number is marked as "0". This type of steel contains a large amount of Ni and Cr, which makes the steel in an austenitic state at room temperature. This type of steel has good plasticity, toughness, weldability and corrosion resistance, and has good corrosion resistance in both oxidizing and reducing media. It is used to make acid-resistant equipment, such as corrosion-resistant containers and equipment linings, transportation pipelines, and Nitric acid equipment parts, etc. Austenitic stainless steel generally adopts solution treatment, that is, the steel is heated to 1050~1150℃ and then water-cooled to obtain a single-phase austenite structure.