904L | N08904 Alloy Steel Phaj
Lus piav qhia luv luv:
904L austenitic stainless hlau belongs rau cov pa roj carbon tsawg, siab nickel, molybdenum austenitic stainless hlau nrog acid tsis kam.904L austenitic stainless hlau muaj peev xwm ua kom passivation zoo heev, zoo heev corrosion kuj, zoo corrosion kuj nyob rau hauv tsis oxidizing acids xws li sulfuric acid, acetic acid, formic acid, thiab phosphoric acid, zoo kuj rau pitting corrosion nyob rau hauv nruab nrab chloride ion media, thiab zoo. tsis kam mus rau crevice corrosion thiab kev nyuaj siab corrosion.Haum rau ntau qhov ntau ntawm sulfuric acid hauv qab 70 ℃, nws muaj kev tiv thaiv corrosion zoo rau txhua qhov concentration thiab kub ntawm acetic acid thiab sib tov ntawm formic acid thiab acetic acid nyob rau hauv ib txwm siab.
904L yog cov ntsiab lus carbon tsawg, siab alloying austenitic stainless hlau tsim rau hnyav corrosive ib puag ncig.Nws muaj kev tiv thaiv corrosion zoo dua li 316L thiab 317L, thaum ntsuas tus nqi thiab kev ua tau zoo, thiab muaj tus nqi zoo dua.Vim qhov sib ntxiv ntawm 1.5% tooj liab, nws muaj kev tiv thaiv zoo heev rau kev txo cov kua qaub xws li sulfuric acid thiab phosphoric acid.Nws kuj muaj kev tiv thaiv zoo heev rau kev ntxhov siab corrosion, pitting corrosion, thiab crevice corrosion tshwm sim los ntawm chloride ions, thiab muaj kev tiv thaiv zoo rau intergranular corrosion.Nyob rau hauv cov ntshiab sulfuric acid nrog ib tug concentration ntawm 0-98%, kev pab kub ntawm 904L tuaj yeem ncav cuag 40 degrees Celsius.Nyob rau hauv ntshiab phosphoric acid nrog ib tug concentration ntawm 0-85%, nws corrosion kuj yog heev zoo.Cov impurities muaj kev cuam tshuam rau corrosion kuj ntawm industrial phosphoric acid uas ua los ntawm cov txheej txheem ntub dej.Ntawm txhua hom phosphoric acid, 904L muaj kev tiv thaiv corrosion zoo dua li cov hlau tsis zoo.Nyob rau hauv oxidizing nitric acid heev, 904L muaj qis corrosion kuj piv rau high alloyed steel qib yam tsis muaj molybdenum.Hauv hydrochloric acid, kev siv 904L tsuas yog txo qis ntawm 1-2%.Nyob rau hauv cov ntaub ntawv no concentration.Lub corrosion kuj ntawm 904L yog zoo dua li cov pa stainless hlau.904L steel muaj siab ua haujlwm rau pitting corrosion.Nws tiv taus crevice corrosion hauv cov tshuaj chloride.Lub zog kuj zoo heev.Cov ntsiab lus npib tsib xee siab ntawm 904L txo tus nqi corrosion hauv pits thiab crevices.Ordinary austenitic stainless hlau tej zaum yuav rhiab heev rau kev ntxhov siab corrosion nyob rau hauv ib puag ncig uas nplua nuj nyob rau hauv chloride ntawm qhov kub siab tshaj 60 degrees Celsius.Los ntawm kev nce cov ntsiab lus npib tsib xee ntawm cov hlau tsis huv, qhov kev xav tau no tuaj yeem txo qis.Vim nws cov ntsiab lus siab npib tsib xee, 904L nthuav tawm qhov ua haujlwm siab rau kev ntxhov siab corrosion tawg hauv cov tshuaj chloride, cov ntsiab lus hydroxide cov ntsiab lus, thiab ib puag ncig nplua nuj hauv hydrogen sulfide.
Petroleum thiab petrochemical khoom, xws li reactors nyob rau hauv petrochemical khoom, cia thiab thauj khoom rau sulfuric acid, xws li tshav kub exchangers, fais fab nroj tsuag flue gas desulfurization pab kiag li lawm, mas siv nyob rau hauv ntauwd lub cev, flue, qhov rooj panels, sab hauv, tshuaj tsuag tshuab, thiab lwm yam ntawm cov cuab yeej nqus dej, cov tshuab ntxhua khaub ncaws thiab cov kiv cua hauv cov txheej txheem organic acid, cov cuab yeej kho dej hiav txwv, seawater heat exchangers, papermaking kev lag luam khoom, sulfuric acid thiab nitric acid cov cuab yeej, acid ntau lawm, thiab lwm yam kev lag luam kws tshuaj thiab lwm yam khoom siv tshuaj, cov hlab ntsha siab, khoom noj khoom haus. , cov chaw muag tshuaj: centrifuges, reactors, thiab lwm yam., cog zaub mov: soy sauce tanks, ua cawv txiv hmab, ntsev tso tsheb hlau luam, khoom siv thiab hnav khaub ncaws, 904L yog ib tug sib piv steel qib rau dilute sulfuric acid muaj zog corrosive nruab nrab.
Phaj, sawb, bar, hlau, forging, tus pas nrig, vuam khoom, flange, thiab lwm yam., tuaj yeem ua tiav raws li daim duab
