S31803 Duplex Stainless Steel: Superior Corrosion Resistance thiab Siab zog rau kev siv

S31803, tseem hu ua Duplex 2205 lossis F60, yog qib siab ntawm duplex stainless hlau hauv kev lag luam thoob ntiaj teb. Pom zoo nyob rau hauv Unified Numbering System (UNS), cov khoom siv no yog khoom plig rau nws qhov tshwj xeeb corrosion kuj, superior mechanical zog, thiab ntau yam kev ua tau zoo nyob rau hauv ib puag ncig hnyav.

Lub ntsiab Chemical Composition thiab Structure

S31803 duplex stainless hlau nta qhov sib npaug ntawm cov hlau alloying uas xa nws cov khoom zoo:

• Chromium (Cr):Kwv yees li 22% - Txhim kho corrosion kuj, tshwj xeeb tshaj yog tiv thaiv pitting thiab crevice corrosion.

• Nickel (Ni):Nyob ib ncig ntawm 5.0-6.0% - Txhim kho toughness thiab ductility.

• Molybdenum (Molybdenum):Kwv yees li 3.0% - Boosts tsis kam mus rau hauv zos corrosion, tshwj xeeb tshaj yog nyob rau hauv chloride-nplua nuj ib puag ncig.

• Nitrogen (N):Txog 0.18% - Ua kom muaj zog thiab ua rau muaj kev ntxhov siab corrosion.

Qhov tshwj xeeb dual-theem microstructure, combining ferritic thiab austenitic theem, ua rau cov khoom siv kho tshuab uas yog kwv yees li ob npaug ntawm cov pa austenitic stainless hlau thaum tuav cov ductility thiab toughness.

Cov khoom zoo thiab cov txiaj ntsig

Txhim kho Corrosion Resistance

S31803 ua tau zoo hauv kev tiv thaiv ntau hom kev xeb, suav nrog:

• Pitting thiab Crevice Corrosion:Nws cov ntsiab lus chromium thiab molybdenum siab tso cai rau nws ua haujlwm tshwj xeeb hauv chloride ib puag ncig.

• Kev nyuaj siab Corrosion Cracking:Cov qauv duplex muab kev tiv thaiv ntau ntxiv rau kev tawg hauv kev ntxhov siab, txawm tias raug kev tawm tsam hnyav.

Superior Mechanical Strength

• High Tensile zog:Feem ntau, lub zog tensile ntawm S31803 siab tshaj 500 MPa, ua rau nws zoo tagnrho rau kev siv siab.

• Txhim kho toughness:Qhov sib npaug microstructure tsis tsuas yog txhawb lub zog tab sis kuj ua kom ntseeg tau qhov toughness thiab ductility, uas yog qhov tseem ceeb hauv kev lag luam ib puag ncig.

Weldability zoo heev

Thaum lub sij hawm tshwj xeeb yog xav tau thaum vuam kom tsis txhob degradation nyob rau hauv lub tshav kub-cuam tshuam cheeb tsam, cov txheej txheem vuam kom zoo thiab kev kho tom qab vuam tuaj yeem ua kom cov pob qij txha muaj zog, tsis muaj kev puas tsuaj. Qhov no ua rau S31803 yog qhov kev xaiv zoo rau ob qho tib si fabrication thiab kho kev ua haujlwm

Cov ntawv thov kev lag luam

S31803 duplex stainless hlau pom kev siv dav hauv ntau qhov kev lag luam vim nws qhov sib npaug ntawm lub zog thiab kev tiv thaiv corrosion. Cov chaw siv tseem ceeb suav nrog:

• Cov khoom siv tshuaj ua haujlwm:Qhov zoo tshaj plaws rau cov reactors, cia tank, thiab cov kav dej uas yuav tsum tau tiv thaiv cov tshuaj phem heev.

• Kev lag luam roj thiab roj:Siv dav hauv cov kav dej, cov li qub, thiab fittings, tshwj xeeb tshaj yog nyob rau hauv high-pressure thiab high-chloride tej yam kev mob.

• Marine Engineering thiab Shipbuilding:Nws tsis kam mus rau cov dej ntsev corrosion ua rau nws haum rau cov qauv ntawm ntug dej hiav txwv, cov khoom siv hauv hiav txwv, thiab lwm yam kev siv tub rog.

• Kev Tsim Khoom Siv Hluav Taws Xob:Ua haujlwm hauv cov chaw tsim hluav taws xob thiab cov chaw tsim hluav taws xob nuclear uas muaj kev ncaj ncees thiab kev ua haujlwm ntev yog qhov tseem ceeb.

• Kev tsim kho thiab Architectural Cheebtsam:Nws qhov zoo nkauj tiav thiab durability tau coj mus rau nws siv nyob rau hauv niaj hnub tsev cov qauv thiab kev siv zoo nkauj

   

Ua raws li International Standards

S31803 duplex stainless hlau ua raws li ntau yam tseem ceeb thoob ntiaj teb thiab lub teb chaws tus qauv, ua kom nws ntseeg tau thiab zoo. Piv txwv li:

• ASME B16.11:Qhia meej nws daim ntawv thov nyob rau hauv kev tsim cov qhov (socket) weld thiab threaded yeeb nkab fittings.

• ASTM A240 / A240M / ASTM A240 / ASTM A240 / A240M / ASTM A240 / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240 / A240M / ASTM A240M / ASTM A240 / A240M)Muab cov lus qhia rau stainless hlau phaj siv nyob rau hauv ntau yam kev siv.

• TS EN 10088-2:Paub meej qhov yuav tsum tau rau stainless hlau khoom nyob rau hauv cov teb chaws Europe.

Qhov kev ua raws li cov qauv nruj nruj tau lees tias S31803 ua tau raws li qhov xav tau ntawm cov ntawv thov tseem ceeb thoob ntiaj teb.

Xaus

S31803 duplex stainless hlau sawv tawm raws li cov khoom siv ntau yam thiab muaj zog zoo tagnrho rau kev xav tau kev lag luam ib puag ncig. Nws zoo heev ua ke ntawm lub zog siab, superior corrosion kuj, thiab txhim khu kev qha weldability ua rau nws yog ib qho kev xaiv saum toj kawg nkaus sectors xws li tshuaj ua, roj thiab roj, marine engineering, zog tsim, thiab kev tsim kho. Raws li kev lag luam txuas ntxiv mus thawb cov kev txwv ntawm kev ua tau zoo thiab ua haujlwm ntev, S31803 tseem yog cov khoom siv uas nyiam tshaj plaws uas muab cov txiaj ntsig ntev thiab kev nyab xeeb.

Rau cov ncauj lus kom ntxaws txog kev qhia tshwj xeeb thiab cov kev daws teeb meem, cov kws tshaj lij kev lag luam raug txhawb kom sab laj cov ntaub ntawv cov ntaub ntawv thiab tiv tauj cov neeg muag khoom ntseeg siab.

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