1.4410 Stainless hlau yog dab tsi?
Mar 17, 2026
Tso lus
1.4410 stainless hlau, feem ntau hu ua Super Duplex 2507 los yog UNS S32750, yog super duplex stainless hlau nrog sib npaug ferritic - austenitic microstructure uas muaj lub zog tshwj xeeb thiab zoo heev corrosion kuj. Nrog nws cov chromium siab, molybdenum, thiab nitrogen cov ntsiab lus, nws muab kev tiv thaiv zoo tshaj rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg nyob rau hauv chloride aggressive ib puag ncig, ua rau nws cov khoom ntawm kev xaiv rau feem ntau xav tau offshore, tshuaj ua, thiab desalination daim ntaub ntawv.
Qhov siab -kev ua tau zoo super duplex qib no yog tus qauv raws li cov npe tseem ceeb thoob ntiaj teb.
| Txuj | Qib sib npaug |
|---|---|
| EN (Tebchaws Europe) | 1.4410 |
| ASTM / AISI (USA) | 2507, UA S32750 |
| JIS (Nyiv) | SUS329J4L |
| Lub Npe | Super Duplex 2507 |
Nws cov khoom kho kom zoo tuaj ntawm qib siab ntawm chromium, molybdenum, thiab nitrogen, nrog rau PREN> 40.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| Cov ntsiab lus (%) | Tsawg dua lossis sib npaug li 0.03 | Tsawg dua lossis sib npaug li 0.80 | Tsawg dua los yog sib npaug rau 1.2 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.02 | 24.0 - 26.0 | 6.0 - 8.0 | 3.0 - 5.0 | 0.24 - 0.32 |
Nws muab ze li ob npaug ntawm lub zog tawm los ntawm cov qauv austenitic steels nrog zoo toughness.
| Khoom | Yield zog (Rp0.2) | Tensile zog (Rm) | Elongation (A) | Hardness (HB) | Kev cuam tshuam (J) |
|---|---|---|---|---|---|
| Tus nqi | Ntau dua lossis sib npaug li 550 MPa | 750 - 1000 MPa | Ntau dua lossis sib npaug li 25% | Tsawg dua lossis sib npaug li 310 | Ntau dua lossis sib npaug li 80 (20 degree) |
Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4410 / Super Duplex 2507
Exceptional Corrosion Resistance:Muaj tus lej siab Pitting Resistance sib npaug (PREN> 40), muab kev ua haujlwm zoo heev rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg nyob rau hauv qhov hnyav chloride ib puag ncig, suav nrog seawater thiab concentrated brines.
Muaj zog heev:Nws cov qauv duplex muab cov txiaj ntsig siab heev thiab lub zog tensile, ua kom txo tau qhov hnyav thiab tus nqi ntau dua - tsim kom muaj txiaj ntsig zoo rau siab - muaj cov khoom.
Zoo Erosion thiab hnav tsis kam:Cov theem ferritic ua rau muaj kev tiv thaiv zoo tiv thaiv kev yaig- corrosion thiab abrasive hnav, tshwj xeeb tshaj yog nyob rau hauv siab - daim ntawv thov khiav ceev.
Zoo Fatigue Strength:Kev ua haujlwm qaug zog zoo dua piv rau qib austenitic, muaj txiaj ntsig zoo rau cov ntawv thov kev thauj khoom dynamic.
Cov ntawv thov tseem ceeb:
Offshore & Marine:Subsea pipelines, Christmas ntoo, manifolds, flowlines, seawater txias tshuab, kiv cua shafts, thiab riser systems.
Kev ua tshuaj lom neeg:Reactors, kub exchangers, kab, thiab kav dej rau corrosive acids thiab chlorides heev.
Desalination & FGD Nroj Tsuag:Siab -siab RO membranes, evaporator tubes, brine rhaub raj, thiab tshuab ntxhua khaub ncaws.
Pulp & Ntawv Kev Lag Luam:Cov khoom siv tshuaj tua kab mob, cov khoom siv tshuaj dawb, thiab cov tshuab tuav cov tshuaj chloride-muaj cov txheej txheem ntws.
Roj & Roj:Downhole tubing, txheej txheem cov khoom siv, thiab cov kav dej saum toj kawg nkaus hauv cov kev pabcuam qaub.
Cargo Tanks:Chemical tankers thiab cov thawv ntim cov nkoj nqa corrosive cargos.
Super Duplex 2507 (1.4410) txawv ntawm tus qauv Duplex 2205 (1.4462) li cas?
The main differences are in alloy content and resulting performance. 2507 contains significantly higher levels of chromium (25% vs. 22%), molybdenum (4% vs. 3%), and nitrogen (0.27% vs. 0.17%), giving it a much higher PREN (typically >40 vs. ~ 34 rau 2205). Qhov no txhais tau tias muaj kev tiv thaiv corrosion zoo dua, tshwj xeeb tshaj yog nyob rau hauv qhov chaw nruj dua li cov dej hiav txwv kub (txog 60℃vs . 30℃rau 2205) lossis cov tshuaj muaj zog chlorides. Nws kuj tseem muaj zog dua txhua yam nyob rau txhua qhov kub thiab txias, nrog rau qhov muaj zog tawm los kwv yees li 20% siab dua 2205. 2507 yog xaiv rau cov mob hnyav tshaj plaws uas 2205 yuav tsis txaus.
Dab tsi yog qhov tseem ceeb rau kev vuam Super Duplex 2507 stainless hlau?
Vuam 2507 yuav tsum muaj kev tswj xyuas nruj kom tswj tau qhov zoo tshaj plaws 50/50 ferrite- austenite tshuav nyiaj li cas thiab tiv thaiv cov theem tsis zoo. Cov kev coj ua tseem ceeb suav nrog kev siv ntau tshaj - alloyed muab tub lim hlau (piv txwv li, 25.10.4.L hom), kev tswj xyuas nruj ntawm cov khoom siv hluav taws xob (0.5-1.5 kJ/mm pom zoo), thiab xyuas kom muaj cov roj tiv thaiv txaus (feem ntau yog Ar + 25-30% N2) kom tswj cov qib nitrogen thiab txhawb kev tsim austenite. Interpass kub yuav tsum tau khaws cia hauv qab 100℃kom tsis txhob overheating. Tom qab-weld cooling rates yuav tsum tau tswj los tiv thaiv kev tsim ntawm nkig intermetallic theem (sigma, chi), thiab cov khoom yuav tsum tsis txhob tuav nyob rau hauv qhov kub thiab txias (kwv yees . 600-1000 degree) rau ncua sij hawm. Preheating feem ntau tsis tas yuav tsum tau, tab sis kev kho cua sov tom qab vuam tsis pom zoo vim nws tuaj yeem cuam tshuam cov theem sib npaug.
Nrhiav kev ntseeg siab ntawm 1.4410 / Super Duplex 2507 Stainless Hlau?
GNEE Steel muab cov khoom zoo tshaj plaws Super Duplex 2507 (1.4410) stainless hlau hauv phaj, yeeb nkab, fittings, bar, thiab forging cov ntaub ntawv rau qhov nyuaj corrosive thiab siab - daim ntawv thov siab. Peb muab tag nrho cov ntaub ntawv traceability thiab ntawv pov thawj (EN 10204 3.1) kom ntseeg tau tias kev ua tau zoo, thiab muab cov kev pabcuam ua tiav nrog rau kev txiav, tsim, thiab kev pabcuam vuam. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.
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