SS316 vs 2205 Duplex Stainless Hlau: Dab tsi yog qhov sib txawv?
Apr 29, 2025
Tso lus
SS316 vs2205 Duplex Stainless Hlau: Qhov sib txawv tseem ceeb rau cov tub txawg
Hauv kev xaiv cov khoom siv, SS316 Austenitic Stainless hlau thiab 2205 Duplex stainless hlau feem ntau tsis meej pem. Thaum ob leeg muaj kev tiv thaiv corrosion, lawv microstructures, kev ua tau zoo, thiab kev siv cuam tshuam loj. Cov lus qhia no rhuav tshem cov kev tsis ua haujlwm ntawm cov tsis muaj txiaj ntsig, cov nqi ua lag luam tau txais txiaj ntsig zoo los pab koj kom txiav txim siab ua haujlwm.
1. SS316 vS 2205 Duplex Stainless Hlau: Dab tsi yog qhov sib txawv?
1.1SS316 vs 2205 Duplex Stainless Hlau Tshuaj Muaj pes tsawg leeg
| Lub ntsiab | SS316 (Raug) | 2205 duplex (raug) | Ua haujlwm sib txawv |
|---|---|---|---|
| Chromium (cr) | 16–18% | 22–23% | Ua cov yeeb yaj kiab passive; Ntau CR IN 2205 Boosts oxidation tsis kam. |
| Npib tsib caug (ni) | 10–14% | 4.5–6.5% | Stabilizes austenite; 2205 txo cov ni tab sis siv nitrogen rau lub zog. |
| Molybdenum (mo) | 2–3% | 3.0–3.5% | Txhim kho pitting kuj; Mo cov ntsiab lus hauv 2205 yog 30% siab dua. |
| Nitrogen (n) | – | 0.14–0.20% | Txhim kho lub zog thiab kev tawm tsam mus rau hauv corrosionconized. |
Tseem Ceeb Takaway: 2205's duplex structure (austenite + ferrite) delivers a yield strength >450 MPA-ob zaug ntawm SS316.
1.2SS316 vs 2205 Duplex Stainless hlau corrosion tsis kam
| Huab cua | SS316 Performance | 2205 Duplex kev ua yeeb yam |
|---|---|---|
| Seawater (Cl⁻>19, {000 ppm) | Nquag rau pitting thiab kev nyuaj siab corrosion tawg (SCC) | Cpt ntawm 35-38 degree; Scc tsis kam 3x siab dua. |
| Tshuaj lom neeg (piv txwv li, acetic acid) | Haum rau kev sim siab | Resistions ntau concentration orgic acids; hloov qee cov npib npib npib npib tsib xee. |
| High temperature (>250 degree) | Ruaj khov rau kev siv mus ntev | Kev pheej hmoo ntawm embrittlement saum 300 degree; Yuav tsum tau kho kom muaj cua sov. |
Cov ntaub ntawv txhawb nqa: Hauv 2 {{0 0mg \/ l organic chloride ib puag ncig yog 0.0257 hli {{% qis dua SS316.
2. 316 Stainless Hlau Ntawv Daim Ntawv Sau Npe
2.1 tus nqi sib piv
Cov Khoom Siv Nqi: 2205 daim hlau muaj 15-20% kim dua SS316, tab sis thickness tuaj yeem txo los ntawm 30-50% nyob rau hauv tib lub thauj khoom, muaj peev xwm txo cov khoom siv tag nrho.
Ua nqi: 2205 vuam yuav tsum tau er2209 muab tub ntaus ntawv thiab tswj cov tswv yim tshav kub kub (pom zoo Tigrication), nce Fabrication nqi los ntawm ~ 20%.
Kev Kawm Txog: Tshuaj Khib Nyuj Panker Project siv 2205 Txo Cargo Tank Phab ntsa tuab los ntawm 40%, txiav cov khoom siv tag nrho cov khoom siv los ntawm 18%.
3. Kev thov cov xwm txheej & Ntawv Qhia Xaiv
3.1 Thaum twg los xaiv SS316
🔹food & pharma: FDA-Raws li kev tso tsheb hlau luam thiab pipelines (piv txwv li cov khoom noj mis nyuj ntau lawm).
Cov duab hluav taws xob: Kab hlau rhuav thiab cov tsheb ciav hlau (tiv taus lub nroog Umbathology corrosion).
🔹gelener Lim: Cov tshuaj rau cov tsis muaj zog tshaj tawm (piv txwv li, qis-nruab sulfuric acid).
3.2 Thaum xaiv 2205 Duplex
🔹Marine Engineering: Seawater desalination equipment, offshore platform structures (resists Cl⁻>20, 000 ppm).
🔹ILE & roj: Cov kav dej zoo thiab cov khoom siv siab siab (tiv thaiv kom h₂s thiab coosc.
🔹Wastrater kev kho mob: Kev kho cov kav dej thiab cov khoom siv sludge (tiv taus chloride thiab corrosion biological).
Qhov Zoo Ntawm Kev Xaiv Gnee
Muab cov en 10088-2 (ss316) lossis en 10088-3 (2205) Daim ntawv pov thawj los xyuas kom meej tias cov muaj pes tsawg leeg ua tau raws li tus qauv. 2205 vuam yuav tsum muaj cov txheej txheem hydrogen tsawg, er2209 vuam hlau tau pom zoo kom tsis txhob muaj dej nag lossis daus.
SS316 muaj cov kev lag luam siab thiab ntau qhov khoom muag khoom; 2205 yog pom zoo kom tau booked 6-8 lub lis piam ua ntej kom ntseeg tau tias kev xa khoom.
Xa kev nug