Super Duplex UNS S32750 Steel Yeeb Nkab
1. Txuj: ASTM A789, ASME SA789, ASTM A790, ASME SA790
2. Seamless OD: 4 txog 219mm
3. Welded OD: 5.0 - 1219.2 hli
4. Thickness: 0.5 - 20 hli
5. Qib: Duplex 2507, UNS S32750, WNR.1.4410
Super Duplex UNS S32750 Steel Yeeb Nkabzaum ntawm tus qauv duplex 2205 thiab cov nqi npib tsib xee alloys kim. Nrog 25% chromium, txog 7% npib tsib xee, 4% molybdenum thiab tswj cov ntsiab lus nitrogen, nws muab rau koj chloride pitting tsis kam thiab lub zog uas austenitic stainless hlau tsis sib xws, ntawm tus nqi zoo hauv qab Inconel lossis Hastelloy. Nws yog qhov mus- mus rau qib rau seawater kev pab cuam, offshore topsides thiab chloride-laced txheej txheem piping qhov twg 316L los yog txawm 2205 yuav poob los ntawm pitting. Nplooj ntawv no hais txog yam ASTM A790 xav tau, yuav ua li cas cov alloy coj, thiab qhov twg nws yog txoj cai hu.
Cov Qauv Khoom
Bar & Rod
Phaj & Ntawv
Coil & Sawb
Tube & Tube
Haum: Flange, Tee, Luj Tshib, Reducer thiab lwm yam.
Forging: Nplhaib, Ncej, Vajvoog, Thaiv thiab lwm yam.
Tshuaj muaj pes tsawg leeg ntawm Super Duplex 2507 (UNS S32750)
Cov muaj pes tsawg leeg hauv qab no ua raws li ASTM A790 rau seamless thiab welded yeeb nkab. Lub siab chromium, molybdenum thiab nitrogen ua ke yog dab tsi thawb lub pitting tsis kam mus rau super- thaj chaw duplex; cov nickel nyob qis qis (li 7%) vim tias cov qauv duplex tsis xav tau ntau dua.
| Element | Cov ntsiab lus,% | Nws pab dab tsi |
| Chromium (Cr) | 24.0 - 26.0 | Base corrosion kuj thiab passivity |
| Nickel (Ni) | 6.0 - 8.0 | Austenite theem sib npaug thiab toughness |
| Molybdenum (hli) | 3.0 - 5.0 | Pitting thiab crevice corrosion kuj |
| Nitrogen (N) | 0.24 - 0.32 | Lub zog thiab pitting kuj boost |
| Cov pa roj carbon (C) | 0.030 max | Khaws qis rau weldability |
| Manganese (Mn) | 1.20 max | Residual deoxidizer |
| Silicon (Si) | 0.80 max | Cov seem |
Mechanical Properties rau ASTM A790
Lub duplex qauv yog dab tsi muab super duplex nws lub zog: lub ferrite thiab austenite theem ua ke, thiab qhov tsawg kawg nkaus yield zog yog ntau tshaj ob npaug ntawm 316L. Qhov no yog ib qho ntawm ob peb qib stainless uas koj tau yuav nws ib nrab rau lub zog, tsis yog rau corrosion xwb.
| Khoom | Yam tsawg kawg nkaus |
| Tensile zog | 800 MPa (116 ksi) |
| Yield zog (0.2% offset) | 550 MPa (80 ksi) |
| Elongation | 15% |
| Hardness | Feem ntau hauv qab 290 HB |
Vim li cas Duplex Structure Matters
Austenitic stainless hlau zoo li 316L yog kwv yees li 100% austenite. Duplex qib yog hais txog ib nrab ferrite, ib nrab austenite, sib npaug los ntawm kev tswj cov chromium - rau - npib tsib xee piv. Cov qauv sib xyaw ua ke yog dab tsi xa cov neeg yuav khoom sib xyaw ua ke tiag tiag xav tau: lub zog siab los ntawm ferrite, toughness thiab weldability los ntawm austenite, thiab tsis kam mus rau chloride stress-corrosion cracking uas ntshiab austenitic qib tsis muaj. Kev lag luam tawm -tawm yog tias super duplex yog ib qho nyuaj rau kev tsim thiab tshuab dua 316L, thiab nws poob toughness saum toj no txog 300 C - nws tsis yog siab - kub alloy.
Corrosion Performance: PREN thiab Seawater
Lub pitting kuj sib npaug tus naj npawb (PREN=Cr + 3.3xMo + 16xN) thaj av ib ncig ntawm 41 txog 43 rau 2507, zoo tshaj 316L (kwv yees 24) thiab txawm duplex 2205 (txog 35). Qhov tseem ceeb pitting kub (CPT) nyob rau hauv chloride media sau saum toj no 50 C, uas yog vim li cas 2507 tuav ntws dej hiav txwv qhov twg 316L yuav pit nyob rau hauv lub hlis. Nws kuj tiv taus cov tshuaj chloride kev nyuaj siab-corrosion tawg zoo dua li qib austenitic. Cov kev txwv: nws tseem yog cov hlau tsis muaj hlau, tsis yog npib tsib xee alloy, yog li txo qis cov kua qaub thiab cov kev pabcuam caustic tawm, thiab nws tuaj yeem raug hydrogen-induced cracking nyob rau hauv qaub kev pab cuam yog tias ib puag ncig hnyav.
Qhov ntau thiab tsawg, Khoom siv thiab Fabrication
2507 yeeb nkab tau muab raws li ASTM A790 hauv seamless thiab welded cov ntaub ntawv, hla tus qauv NPS ntau yam. Phab ntsa thicknesses ua raws cov txheej txheem duplex. Ob lub ntsiab lus fabrication tseem ceeb: super duplex yuav tsum yog kev daws teeb meem-annealed thiab quenched tom qab vuam kom rov qab cov theem sib npaug, thiab cov hlau muab tub lim yuav tsum dhau -alloyed (feem ntau ER2553) kom phim cov corrosion kuj ntawm lub hauv paus hlau. Kev sib sau yuav tsum nyob txias - ua haujlwm nyob rau hauv cov kev txwv alloy; kub ua hauj lwm yog txwv rau lub qhov rais nqaim kub.
Dab tsi mus rau ntawm Kev Yuav Khoom
- Txuj thiab qib: ASTM A790, UNS S32750, super duplex 2507
- Seamless los yog welded, NPS thiab teem caij
- Kev daws-annealed thiab pickled mob
- Mill test daim ntawv pov thawj (EN 10204 3.1) thiab PMI pov thawj ntawm qhov tau txais
- Charpy cuam tshuam yog tias qis- qhov kev pabcuam kub tau teev tseg
Tej kev siv
- Seawater cooling thiab desalination piping
- Offshore topsides thiab subsea khoom siv
- Roj thiab roj flowlines nrog chloride thiab qaub pab
- Flue-gas desulfurization scrubbers
- Cov txheej txheem tshuaj siv tshuaj chloride media
- Pulp thiab ntawv bleach cog khoom siv
FAQ
Q: Txog Super Duplex UNS S32750 Steel Pipe Nqe ib kg?
A: Nqe yog li ntawm $ 2 txog $ 10 toj ib kg, txawv nyob ntawm qhov loj me, phab ntsa thickness, tus neeg muag khoom thiab lwm yam.
Q: Koj lub sijhawm khoom xa tuaj ntev npaum li cas?
A: Lub sij hawm xa tuaj yog nyob rau hauv 5-21 hnub
Q: Puas muaj Kev Pabcuam Qauv?
A: Cov qauv raug muab pub dawb
Q: Yam tsawg kawg nkaus Order Quantity yog dab tsi?
A: Tsis muaj qhov txiav txim yam tsawg kawg nkaus
Q: Yuav ntim cov khoom li cas?
A: Cov txheej sab hauv muaj cov ntawv tsis muaj dej tsis zoo sab nrauv thiab kho nrog fumigation ntoo pallet.
Q: Lub teb chaws xa tawm
A: Brazil, South Africa, Indonesia, Is Nrias teb, Singapore, Malaysia, Iran, Russia, UAE, Chile, Laos, thiab lwm yam
Cim npe nrov: Super duplex 2507 yeeb nkab, UNS S32750, ASTM A790, super duplex yeeb nkab, 2507 stainless yeeb nkab, seawater yeeb nkab, duplex steel yeeb nkab
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