316Ti vs 316L: Stabilized vs Tsawg-Carbon Austenitic Stainless Hlau rau Welded Structures

316L yog qhov tseeb rau feem ntau welded fabrication ntawm ambient thiab nruab nrab kub, vim hais tias nws ultra- cov ntsiab lus tsis tshua muaj carbon (0.030% max) twb tiv thaiv rhiab heev thaum lub sij hawm txheem ib zaug - thiab multi- hla vuam.316 Ti (UNS S31635)khwv tau nws qhov chaw xwb nyob rau hauv sustained elevated - kub kev pab cuam (kwv yees li 425-815℃/ 800-}1500℃F), xws li tso tshuab, boilers, thiab ib co European siab- nkoj lis dej num, qhov twg nws titanium stabilization resists carbide nag lossis daus nyob ib leeg.

Dab tsi yog 316Ti thiab 316L Stainless Hlau?

316Ti (UNS S31635) yog titanium-stabilized version ntawm Hom 316 stainless hlau, thaum 316L (UNS S31603) yog ultra- qis-carbon version ntawm tib lub hauv paus alloy - ob qho tib si muaj los daws cov teeb meem tib yam, intergranular, tab sis corrosion kuj

Hom qauv316 stainless hlauNws yooj yim rau rhiab heev: thaum lub sij hawm vuam, cov hlau nyob ze ntawm qhov vuam (lub tshav kub- thaj tsam cuam tshuam, los yog HAZ) txias qeeb los ntawm 425-815℃(800-1500℃F) ntau, cia chromium ua ke nrog carbon thiab precipitate li chromium carbides ntawm cov ciam teb.

Qhov no hauv zos depletes chromium, tawm hauv cov nplej - thaj tsam ciam teb tsis yooj yim rau intergranular corrosion. 316L daws qhov no los ntawm kev tshem tawm feem ntau ntawm cov pa roj carbon monoxide thiaj li muaj me ntsis rau precipitate. 316Ti daws nws txawv: nws ntxiv titanium, uas nyiam tshaj nrog cov pa roj carbon monoxide los tsim cov txheej txheem titanium, txawm tias muaj cov pa roj carbon monoxide. (siab dua) cov pa roj carbon ntau tseem nyob.

Cov peev txheej: ASTM A240 / A240M, ASTM A312 / A312M, ASTM A276 / A276M tus qauv tshwj xeeb.

Yuav ua li cas 316Ti thiab 316L sib piv hauv tshuaj muaj pes tsawg leeg?

316Ti thiab 316L sib koom yuav luag zoo tib yam chromium, npib tsib xee, thiab molybdenum ntau yam; Qhov sib txawv ntawm qhov sib txawv yog tias 316Ti tso cai ntau dua ob npaug ntawm cov pa roj carbon monoxide ntawm 316L vim tias nws cov titanium ntxiv, tsis muaj cov pa roj carbon tsawg, yog dab tsi tswj rhiab heev.

Tau qhov twg los: ASTM A240 / A240M kev sib xyaw ua ke rau UNS S31635 thiab UNS S31603.

Qhov tsawg kawg nkaus titanium tsis yog ib feem pua; Nws yog khi ncaj qha rau cov pa roj carbon thiab nitrogen cov ntsiab lus uas cov cua sov muaj, qhia raws li qhov sib piv stabilization.

Dab tsi yog Ti Stabilization Ratio, thiab Vim Li Cas Nws Tswj IGC Resistance?

ASTM A240 stabilization yuav tsum tau rau 316Ti yog Ti ntau dua los yog sib npaug rau 5 x (%C + %N), uas lav txaus titanium tam sim no rau daim ntawv cog lus nrog txhua muaj cov pa roj carbon thiab nitrogen atom ua ntej chromium yuav - qhov piv no, tsis yog cov raw titanium feem pua, yog dab tsi txiav txim seb puas muab cua sov kom zoo stabil.

Hauv kev xyaum, qhov no txhais tau tias daim ntawv pov thawj zeb rau 316Ti yuav tsum tau kuaj xyuas qhov tseeb ntawm cov pa roj carbon thiab nitrogen cov ntsiab lus ntawm cov cua sov tshwj xeeb, tsis yog tawm tsam 0.70% siab tshaj titanium qab nthab. Thaum tshav kub kub nrog carbon mus rau 0.08% siab tshaj plaws yuav tsum tau proportionally ntau titanium kom nyob ruaj ruaj tshaj li lub tshav kub nrog carbon ze 0.03%. EETA muab 316Ti nrog tag nrho cov ntawv xeem mills (MTRs) yog li qhov stabilization piv tuaj yeem txheeb xyuas qhov kub thiab txias.

Yuav ua li cas 316Ti thiab 316L tiv taus rhiab heev ntawm qhov kub thiab txias?

316L resists rhiab heev los ntawm qhov kub thiab txias ntau yam txheej txheem thiab txheej txheem vuam hla dhau, tab sis 316Ti tswj qhov kev tiv thaiv ntev dua siab dua - qhov kub thiab txias, uas yog vim li cas nws thiaj li tau teev rau kev nce siab ntxiv - qhov kub thiab txias es tsis yog rau vuam ib leeg.

Tus cwj pwm kev xav tau piav qhia ntawm no ua raws li kev tsim chromium-carbide nag lossis daus mechanism (ASTM A262 xeem txoj kev) siv rau stabilized piv rau qis- qib carbon austenitic.

Dab tsi Vuam Filler Hlau Yuav tsum siv rau 316Ti thiab 316L?

Ob leeg 316Ti thiab 316L welds yuav luag ib txwm ua nrog ER316L lossis E316L muab tub lim hlau, vim tias titanium tsis tuaj yeem hloov pauv hla lub vuam arc - lub ntsiab lus 316Ti cov txiaj ntsig stabilization tiv thaiv lub hauv paus hlau thiab cua sov- cuam tshuam cheeb tsam, tab sis qhov zoo li qhov qis qis ntawm weld ntawm nws tus kheej.

Qhov no yog qhov feem ntau saib tsis tau hauv kev xaiv cov khoom siv. Titanium oxidizes nyiam tshaj plaws thiab feem ntau poob rau slag thiab spatter thaum kis los ntawm vuam arc, yog li titanium- sib piv cov hlau tsis yog cov qauv kev lag luam. Cov kev cuam tshuam:

Qhia meej ER316L (GTAW/GMAW) lossis E316L-16/17 (SMAW) muab tub lim rau ob qho tib si 316Ti thiab 316L puag hlau, tshwj tsis yog tias qhov project specification hu rau qhov sib txuam ruaj khov muab tub lim rau ib qho laj thawj tshwj xeeb

Vim tias cov hlau welded yog qhov ua tau zoo tsawg -carbon tsis hais txog ntawm lub hauv paus- qib hlau, qhov kev ua tau zoo ntawm cov khoom siv vuam nws tus kheej yog tswj hwm los ntawm 316L- hom chemistry nyob rau hauv ob qho tib si.

316Ti qhov kom zoo dua ruaj khov yog pom tau tias nyob rau hauv cov hlau tsis muaj kev cuam tshuam thiab sab nrauv HAZ, qhov twg cov khoom qub titanium- tshuav nyiaj li cas yog khaws cia

Tshaj tawm -weld tu (pickling thiab passivation ib ASTM A967) tseem tsim nyog rau ob qib kom tshem tawm cov cua sov thiab rov ua dua txheej txheej ntawm qhov vuam

Yuav Ua Li Cas Cov Khoom Siv Hluav Taws Xob ntawm 316Ti thiab 316L Sib Piv?

316Ti muaj ib tug me ntsis siab tshaj qhov tsawg kawg nkaus yield thiab tensile zog tshaj 316L nyob rau hauv lub annealed mob, thiab nws tuav lub zog zoo dua nyob rau hauv lub siab kub, thaum ob qib sib piv qhov tsawg kawg nkaus elongation.

Tau qhov twg los: ASTM A240 / A240M yam tsawg kawg nkaus cov cuab yeej cuab tam rau UNS S31635 thiab UNS S31603, chav tsev kub, annealed mob.

Puas yog 316Ti thiab 316L sib txawv hauv General Pitting thiab Crevice Corrosion Resistance?

Tsis muaj - 316Ti thiab 316L muaj qhov tseem ceeb tib yam pitting thiab crevice corrosion kuj, vim titanium tsis yog ib lo lus nyob rau hauv PREN formula thiab ob qib sib koom tib chromium, molybdenum, thiab nitrogen ntau; tag nrho qhov sib txawv ntawm lawv yog intergranular corrosion kuj tom qab vuam los yog kub raug, tsis kam mus rau chloride pitting.

Cov kev lag luam twg thiab cov ntawv thov nyiam txhua qib?

316L dominates welded fabrication, khoom noj khoom haus, tshuaj, thiab architectural ua hauj lwm nyob rau hauv ambient kub thiab nruab nrab, thaum 316Ti yog teev tshwj xeeb tshaj yog rau sustained elevated - cov khoom kub thiab nyob rau hauv cheeb tsam los yog cov cai nrog rau keeb kwm nyiam rau cov qib stabilized.

Yuav Ua Li Cas Tus Nqi thiab Muaj Sib Piv Ntawm 316Ti thiab 316L?

316Ti feem ntau nqa tsuas yog tus nqi qis tshaj li 316L, feem ntau nyob rau hauv thaj tsam li ntawm 5 txog 15 feem pua, tab sis nws qhov kev muaj peev xwm muaj nyob deb dua hauv cheeb tsam tsis sib xws - 316L yog stocked tseem ceeb nyob txhua qhov chaw, thaum 316Ti yog ntau dua nyob rau hauv cov teb chaws Europe thiab muaj peev xwm nqa tau ntev txhuas lub sij hawm los yog zeb - txiav txim yam tsawg kawg nkaus

Alloy tus nqi tsav tsheb: titanium yog qhov sib piv qis dua - tus nqi stabilizing ntxiv, yog li cov khoom siv raw - tus nqi them rau 316Ti tshaj 316L yog qhov tsawg dua, piv txwv li, tus nqi ntawm 6% molybdenum super- qib austenitic tshaj 316L

Cov khoom lag luam hauv cheeb tsam: 316Ti ib txwm muaj ntau dua nyob rau hauv European lag luam (xav txog nws cov keeb kwm ntev hauv DIN / EN specifications), thaum 316L yog cov khoom tsis muaj nyob hauv feem ntau North American thiab Asian mov chains

Lub Sijhawm Lead: Kev qhia 316Ti sab nraum nws cov khoom lag luam tseem ceeb hauv cheeb tsam tuaj yeem txhais tau tias zeb - xaj cov sij hawm ua ntej es tsis yog ex- cov khoom xa tuaj - paub meej tias muaj ua ntej ua lub sijhawm rau nws

Kev hloov pauv hloov pauv: vim tias niaj hnub L- qib npog feem ntau ntawm cov kev pabcuam uas ib zaug xav tau kom ruaj khov, ntau qhov tshwj xeeb tau hloov mus rau 316L los ntawm lub neej ntawd, khaws 316Ti rau qhov tshwj xeeb siab- qhov kub thiab txias qhov twg nws tseem ua kom pom tseeb tseeb.

Thaum twg Koj Yuav Tsum Xaiv 316Ti Tshaj 316L?

Xaiv 316Ti thaum qhov kev tivthaiv yuav pom cov kev pabcuam ruaj khov hauv 425-815℃sensitizing ntau yam, thaum cov cai tswjfwm lossis cov neeg siv khoom tshwj xeeb hu rau qib ruaj khov, lossis thaum sib piv 316Ti system uas twb muaj lawm; xaiv 316L rau qhov tseem ceeb txhua yam, suav nrog tus qauv ambient thiab nruab nrab-kub welded fabrication.

• Cov khoom siv ua haujlwm tsis tu ncua lossis ntau zaus hauv 425-815℃(800-1500℃F) ntau → 316Ti
• Kev tswj hwm tus qauv tsim, tus neeg siv khoom tshwj xeeb, lossis cov qauv cog uas twb muaj lawm yuav tsum muaj qib ruaj khov → 316Ti
• Hloov lossis txuas ntxiv ntawm 316Ti uas twb muaj lawm (kua pa, boiler, kub exchanger) → 316Ti, rau cov khoom sib xws
• Standard ambient-rau- nruab nrab- kub welded qauv, tso tsheb hlau luam, thiab kav → 316L
• Khoom noj khoom haus, tshuaj, lossis daim ntawv thov kev tsim vaj tsev tsis muaj qhov siab siab -kub raug → 316L
• Lub sijhawm ua haujlwm nyob ntawm ex- cov khoom muaj nyob hauv North America lossis Asia → 316L, tshwj tsis yog 316Ti lub sijhawm ua haujlwm tau lees paub lees paub

Yog hais tias qhov kev txhawj xeeb tsav cov lus nug yog cov tshuaj chloride los yog seawater corrosion es tsis yog siab -kub rhiab heev, tsis yog qib pib txoj cai - siab dua - qib PREN xws li 254SMO los yog duplex stainless hlau yuav tsum tau soj ntsuam hloov.

Cov lus nug nquag

Q: Puas yog 316Ti muaj zog dua 316L?

A: Yog, kev coj ncaj ncees. 316Ti muaj qhov ua tau zoo ntawm 205 MPa piv rau 170 MPa rau 316L, thiab lub zog tensile yam tsawg kawg nkaus ntawm 515 MPa piv rau 485 MPa, hauv qab ASTM A240. Ob leeg sib koom tib yam 40% yam tsawg kawg nkaus elongation.

Q: Kuv puas tuaj yeem vuam 316Ti nrog titanium-cov kabmob muab tub lim kom phim lub hauv paus hlau raws nraim?

A: Hauv kev coj ua lag luam tus qauv, tsis muaj. Titanium oxidizes nyiam thiab tsis hloov kev ntseeg siab hla lub vuam arc, yog li ER316L lossis E316L muab tub lim yog siv rau 316Ti thiab 316L welds. Yog li ntawd, qhov kev tso nyiaj ntawm vuam nws tus kheej yog tswj hwm los ntawm qis -carbon chemistry txawm hais tias lub hauv paus hlau tau koom nrog.

Q: Puas yog 316Ti zoo ib yam li 321 stainless hlau?

A: Tsis yog. Ob leeg yog cov qib austenitic ruaj khov, tab sis 321 ruaj khov nrog niobium-dawb, thiab yog raws li 18Cr-8Ni (304-type) tsev neeg tsis muaj molybdenum, thaum 316Ti yog raws li molybdenum-type tanium tsev neeg nrog 316Ti. stabilization. 316Ti yog li ntawd muaj txiaj ntsig zoo pitting thiab crevice corrosion tsis kam tshaj 321 vim nws cov ntsiab lus molybdenum.

Q: Puas yog 316L puas xav tau qib stabilized hloov?

A: Yog, tshwj xeeb tshaj yog rau kev txhawb nqa siab - qhov kev pabcuam kub hauv 425-815℃sensitizing ntau yam, lossis qhov chaw tswj hwm lossis cov lus qhia tshwj xeeb hu rau qib stabilized. Rau cov qauv ambient thiab nruab nrab-kub welded fabrication, 316L cov pa roj carbon tsawg feem ntau txaus rau nws tus kheej.

Q: Puas yog 316Ti thiab 316L hloov pauv tau rau cov dej hiav txwv lossis cov tshuaj chloride?

A: Ua tau zoo, vim tias titanium tsis txhim kho pitting lossis crevice corrosion tsis kam - ob qib sib koom tseem ceeb tib yam PREN. Tsis yog qhov kev xaiv zoo tshaj plaws rau kev txhoj puab heev chloride lossis tag nrho cov dej hiav txwv raug; qib siab dua -molybdenum xws li 254SMO yog txoj kev txhim kho tsim nyog rau cov kev pabcuam ntawd.