SUS316L Stainless hlau

SUS316L yog qhov qis-carbon variant ntawm SUS316 (C Tsawg dua lossis sib npaug rau 0.03%), sib txuas cov molybdenum corrosion kuj nrog cov pa roj carbon tsawg. Nws tshem tawm intergranular corrosion tom qab vuam, ua rau nws zoo tagnrho rau cov welded loj nyob rau hauv ib puag ncig hnyav.

Chemical Composition (wt%): C Tsawg dua lossis sib npaug 0.03, Si Less dua lossis sib npaug rau 1.00, Mn Tsawg dua lossis sib npaug 2.00, P Tsawg dua lossis sib npaug 0.045, S Less dua lossis sib npaug 0.030, Cr=16.00-18.00, Ni=10.00-14.00, Mo=2.00-3.00, Fe{{8}

Mechanical Properties: Tensile Strength Ntau dua los yog sib npaug 485MPa, Yield Strength Ntau dua lossis sib npaug rau 170MPa, Elongation Ntau dua lossis sib npaug li 40%, Hardness (HB) Tsawg dua lossis sib npaug 217

Kev Ua Haujlwm Zoo: Zoo heev intergranular corrosion kuj tom qab vuam; superior chloride pitting kuj; zoo tsawg-kub toughness; haum rau hnyav vuam.

Qib sib npaugASTM A 240 316L, EN 1.4404, UNS S31603

Daim ntawv thov: Offshore roj platforms, loj chemical cia tso tsheb hlau luam, seawater pipelines, kev kho mob implants, semiconductor khoom, khoom noj khoom haus nyob rau hauv cov ntug hiav txwv dej.

FAQ

1. Q: Dab tsi ua rau SUS316L haum rau kev kho mob cog? A: Nws ua tau raws li cov qauv biocompatibility. Cov pa roj carbon tsawg (tsawg dua lossis sib npaug li 0.03%) zam cov tshuaj lom ion tso tawm, thiab Mo txhim kho corrosion kuj nyob rau hauv lub cev kua (nplua nuj chloride). Nws tsis yog - sib nqus, sib xws nrog MRI scans. Nws ductility tso cai rau shaping rau hauv kev cog hniav (ntsia hlau, hip pob qij txha), thiab nws bonds zoo nrog tib neeg cov ntaub so ntswg. Tsis zoo li SUS316, nws cov welded corrosion kuj ua kom ntseeg tau tias kev cog qoob loo yog welded, txo qis kev pheej hmoo.

2. Q: SUS316L ua haujlwm li cas hauv qhov chaw qis -kub? A: Nws yog ib qho zoo heev rau cryogenics, nrog rau kev siv tau kub mus rau -196℃. Tsawg carbon txhim kho toughness, tiv thaiv nkig tawg ntawm qis temps. Cov qauv austenitic ruaj khov khaws cov ductility, ua rau nws haum rau cov kua nitrogen cia tso tsheb hlau luam, LNG pipelines, thiab aerospace cryogenic Cheebtsam. SUS316 (C siab dua) tsis tshua muaj zog ntawm qhov kub qis, yog li SUS316L yog qhov zoo dua rau cov ntawv thov hauv cheeb tsam txias.

3. Q: SUS316L puas tuaj yeem siv rau hauv siab -concentration acid ib puag ncig? A: Nws tiv taus cov kua qaub feem ntau, tab sis siab - concentration (Ntau dua lossis sib npaug ntawm 90% sulfuric acid) lossis oxidizing acids (nitric acid) tuaj yeem ua rau nws. Rau 5-30% sulfuric acid ntawm chav tsev kub, nws ua haujlwm zoo; saum toj 60 degree, siv Hastelloy. Nws resists dilute hydrochloric acid tab sis tsis concentrated. Rau aggressive acids, sim nyob rau hauv qhov tseeb tej yam kev mob ua ntej. Nws cov corrosion kuj zoo dua SUS304L tab sis tsis zoo rau cov khoom tshwj xeeb xws li titanium.

4. Q: Dab tsi yog qhov txawv ntawm SUS316 thiab SUS316L hauv vuam? A: SUS316L yuav tsum tsis muaj kev tshaj tawm-weld kho cua sov vim muaj cov pa roj carbon tsawg, thaum SUS316 yuav xav tau kev sib txhuam los tiv thaiv kev sib tsoo. Ob leeg siv ER316L muab tub lim hlau, tab sis SUS316L qhov chaw vuam tsis muaj chromium carbide nag lossis daus. Rau cov qauv loj (offshore platforms) nrog ntau yam welds, SUS316L yooj yim fabrication thiab txo cov nqi, kom ntseeg tau ntev -lub sij hawm corrosion kuj.

5. Q: Yuav ua li cas tswj cov khoom siv SUS316L hauv cov ntug dej hiav txwv? A: Ntug dej ntsev tsuag yog qhov kev hem thawj loj. Ntxuav qhov chaw txhua hli nrog dej tshiab kom tshem tawm cov ntsev deposits. Rau qhov chaw welded, siv cov tshuaj tiv thaiv - yog tias xav tau. Tsis txhob khawb- kho tam sim nrog polishing. Siv kev kho mob passivation (nitric acid tov) txhua xyoo los kho cov oxide zaj duab xis. Kev tshuaj xyuas tsis tu ncua rau pitting, tshwj xeeb tshaj yog nyob rau hauv crevices (flange pob qij txha), xyuas kom meej thaum ntxov thiab ncua kev pab cuam lub neej.