S2205yog aduplex stainless hlau, txhais tau tias nws muaj dual -theem microstructure muaj kwv yees li 50% austenite thiab 50% ferrite. Qhov no metallurgical "kev tuav tes" sib txuas ua ke zoo tshaj plaws ntawm ob lub ntiaj teb: pitting tsis kam ntawm qib austenitic thiab lub zog siab thiab kev ntxhov siab -corrosion cracking resistance ntawm qib ferritic. HT PIPE is aastm a240 hom 2205 phajtus xa khoom nrog 15+ kev xa tawm.Tiv tauj pebkom paub ntau ntxiv thiab quotes dawb!
Cov Lus Qhia Tshwj Xeeb ntawm S2205 Plate
| Khoom | S2205 Duplex Phaj | 316L Stainless hlau |
| Yield zog (0.2% Offset) | ~ 65 ksi (450 MPa) | ~ 30ksi (205 MPa) |
| PREN (Pitting Resistance) | 33 – 35 | 24 – 26 |
| Chromium (Cr) Cov ntsiab lus | 22.0 – 23.0% | 16.0 – 18.0% |
| Molybdenum (Mo) Cov ntsiab lus | 3.0 – 3.5% | 2.0 – 3.0% |
| Thermal Expansion | Lower (txo kev ntxhov siab) | Higher (Nyob rau warping) |
Cov ntawv thov tseem ceeb hauv 2026
1. Roj & Roj (Subsea thiab Topside)
Nrog rau ntug hiav txwv drilling txav mus rau hauv qhov tob, ntau "qaub" (H2S- nplua nuj) ib puag ncig, S2205 muab qhov tsim nyog tiv thaiv cov tshuaj chloride-induced stress corrosion cracking uas feem ntau plagues txheem stainless hlau.
2. Desalination thiab Marine Infrastructure
Lub siabPitting Resistance Equivalent Number (PREN)ntawm S2205 ua rau nws tus qauv kub rau kev tuav dej hiav txwv. Nws tiv thaiv cov "pinhole" los ntawm cov dej ntsev nyob hauv cov chaw nres nkoj thiab cov nroj tsuag desalination.
3. Kev ua tshuaj lom neeg thiab biofuels
Kev nce siab ntawm biofuel refineries- uas feem ntau ua cov khoom siv acidic ntau heev - tau pom S2205 dhau los ua qhov kev xaiv tseem ceeb rau cov khoom siv hluav taws xob thiab cov tso tsheb hlau luam.
Fabrication and Maintenance Insights
Vuam:Nws yog qhov zoo tshaj plaws weldable, tab sis cov tswv yim cua sov yuav tsum tau tswj nruj heev. Yog hais tias cov hlau nyob twj ywm kub ntev dhau lawm, qhov sib npaug ntawm austenite thiab ferrite tuaj yeem hloov pauv, ua rau cov weld brittle.
Kub txwv:S2205 tsis yog "siab-kub" alloy. Nws feem ntau txwv rau kev pabcuam kub hauv qab no315℃(600℃F)kom tsis txhob "475℃embrittlement," ib theem hloov uas tuaj yeem ua rau cov khoom poob nws cov tawv.
Machining:Vim nws lub zog siab, S2205 ua haujlwm - hardens sai. Fabricators yuav tsum siv siab - cov cuab yeej zoo thiab cov nqi noj zoo ib yam kom tsis txhob glazing.
Xaus: Puas yog S2205 Txoj Cai rau Koj Txoj Haujlwm?
Yog tias koj qhov project cuam tshuam nrog cov tshuaj chloride siab, cov khoom siv hluav taws xob tseem ceeb, lossis kev xav tau ntev - lub sij hawm ntev nrog kev saib xyuas tsawg, S2205 phaj yuav yog tus nqi tshaj plaws - kev xaiv zoo tshaj lub neej ntawm cov cuab tam. Los ntawm kev txuas qhov sib txawv ntawm tus qauv stainless thiab kim "super" alloys, nws muab lub siab -kev ua tau zoo hauv nruab nrab rau kev sib tw engineering niaj hnub.
Nrhiav rau hauv zos S2205 cov chaw muag khoom lossis cov ntaub ntawv ua raws ASTM A240?
Xyuas kom koj txheeb xyuas cov ntawv tshaj tawm zeb xeem (MTRs) kom paub meej txog cov ntsiab lus nitrogen tshwj xeeb, vim qhov no yog tus yuam sij kom ntseeg tau tias cov phaj ua tau raws li cov qauv tshiab S32205.
