317/317L stainless hlau tshuaj muaj pes tsawg leeg

Alloy 317L (UNS S31703) yog molybdenum-cov kabmob austenitic stainless hlau uas muaj zog tiv thaiv tshuaj tua kab mob zoo li piv rau cov pa chromium-nickel austenitic stainless hlau xws li Alloy 304. Tsis tas li ntawd, Alloy 317L muaj ntau dua creep, kev nyuaj siab-rau- rupture, thiab tensile lub zog ntawm qhov kub siab tshaj li cov pa stainless hlau.Nws yog cov pa roj carbon tsawg lossis "L" qib uas muab kev tiv thaiv rau rhiab heev thaum vuam thiab lwm yam txheej txheem thermal.

317/317L stainless hlau tshuaj muaj pes tsawg leeg

Corrosion Resistance

Cov ntsiab lus molybdenum siab dua ntawm Alloy 317L paub tseeb tias qhov dav dav dav dav thiab thaj chaw corrosion kuj nyob rau hauv feem ntau cov xov xwm thaum piv nrog 304/304L thiab 316/316L stainless hlau.Ib puag ncig uas tsis tawm tsam 304/304L stainless hlau feem ntau yuav tsis corrode 317L.Ib qho kev zam, txawm li cas los xij, muaj zog oxidizing acids xws li nitric acid.Cov alloys uas muaj molybdenum feem ntau tsis ua haujlwm zoo hauv cov cheeb tsam no.

317/317L stainless hlau tshuaj muaj pes tsawg leeg

Alloy 317L muaj corrosion kuj zoo heev rau ntau yam tshuaj.Nws tiv thaiv kev tawm tsam hauv sulfuric acid, acidic chlorine thiab phosphoric acid.Nws yog siv los tuav cov organic thiab fatty acids kub uas feem ntau muaj nyob rau hauv cov zaub mov thiab tshuaj ua daim ntawv thov.

317/317L stainless hlau tshuaj muaj pes tsawg leeg

Qhov corrosion kuj ntawm 317 thiab 317L yuav tsum zoo ib yam nyob rau hauv ib puag ncig muab.Ib qho tshwj xeeb yog qhov uas cov hlau yuav raug kub hnyiab hauv chromium carbide nag lossis daus ntawm 800 - 1500 ° F (427 - 816 ° C).Vim nws cov ntsiab lus tsis tshua muaj carbon, 317L yog cov khoom siv hauv qhov kev pabcuam no los tiv thaiv intergranular corrosion.

Feem ntau, austenitic stainless hlau yog raug rau chloride kev nyuaj siab corrosion cracking nyob rau hauv halide kev pab cuam.Txawm hais tias 317L yog me ntsis resistant rau kev ntxhov siab corrosion tawg dua li 304/304L stainless hlau, vim nws cov ntsiab lus molybdenum siab dua, nws tseem raug cuam tshuam.

Qhov siab dua chromium, 317/317L stainless hlau tshuaj muaj pes tsawg leeg molybdenum thiab nitrogen cov ntsiab lus ntawm 317L txhim khu nws lub peev xwm los tiv thaiv pitting thiab crevice corrosion nyob rau hauv lub xub ntiag ntawm chlorides thiab lwm yam halides.Pitting Resistance sib npaug nrog rau Nitrogen tooj (PREN) yog ib qho txheeb ze ntsuas pitting kuj.Daim ntawv qhia hauv qab no muaj kev sib piv Alloy 317L thiab lwm yam austenitic stainless hlau.