Dab tsi yog qib sib npaug ntawm UNS S32750?
UNS S32750 (feem ntau ua lag luam raws li lub npe SAF 2507) yog superduplex stainless hlau nquag sib npaug rau EN / DIN 1.4410 thiab X2CrNiMoN25-7-4 cov qauv. Nws yog dav siv nyob rau hauv siab zog thiab corrosion kam rau ua daim ntaub ntawv; Piv txwv li, nyob rau hauv seamless raj raws li ASTM A789, thiab muaj xws li cov npe xws li F53 (ASTM A182) thiab CE3Mn (ASTM A890) rau castings.
Cov ntaub ntawv qib 2507 yog dab tsi?
Cov khoom siv qib 2507 (feem ntau hu ua 2507 superduplex stainless hlau los yog UNS S32750) yog ib qho kev ua tau zoo austenitic -ferritic stainless hlau uas muaj kev tiv thaiv corrosion thiab siab zog. Nrog rau cov muaj pes tsawg leeg uas suav nrog 25% chromium, 4% molybdenum thiab 7% npib tsib xee, nws tuaj yeem tsim ua ntau hom tswv yim xws li phaj, coils, kav, tuav thiab xaim.
Qhov txawv ntawm S32750 thiab 2507 yog dab tsi?
Tsis muaj qhov sib txawv; ob qho tib si S32750 thiab 2507 xa mus rau tib lub superduplex stainless hlau alloy. Nyob rau hauv cov ntsiab lus no, S32750 tsim nws lub npe raws li UNS (Unified Numbering System), thaum 2507 yog nws ib txwm coj mus muag lub npe, uas qhia txog nws muaj pes tsawg leeg (kwv yees li 25% chromium, 7% nickel thiab 4% molybdenum), lub luag hauj lwm rau nws siab mechanical resistance thiab nws zoo heev kam rau ua corrosion, tshwj xeeb tshaj yog tiv thaiv chloride.
Chemical Composition ntawm Super 2507 Duplex Steel
| Lub ntsiab | Cov pa roj carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Yog) | Chromium (Cr) | Nickel (Ni) | Nitrogen (N) | Molybdenum (hli) | Copper (Cu) |
|---|---|---|---|---|---|---|---|---|---|---|
| Yam tsawg kawg nkaus | - | - | - | - | - | 24.0 Nws | 6.0 | 0.24 ib | 3.0 | - |
| Qhov siab tshaj plaws | 0.030 Nws | 1.20 | 0.035 ib | 0.020 ib | 0.80 ib | 26.0 Nws | 8.0 ib | 0.32 ib | 5.0 | 0.50 ib |
Mechanical Properties (Tsev muaj nuj nqis)
| Hom khoom | Yield zog Rp0.2 (MPa) | Tensile zog Rm (MPa) | Elongation (%) | Hardness [HB] | Charpy Impact-V, -46℃[J] |
|---|---|---|---|---|---|
| Bar | Ntau dua lossis sib npaug li 550 | Ntau dua lossis sib npaug li 750 | Ntau dua lossis sib npaug li 25 | Tsawg dua los yog sib npaug li 300 | Ntau dua lossis sib npaug li 65 |
| LF Phaj (Coil) | Ntau dua lossis sib npaug li 550 | 750-1000 Nws | Ntau dua lossis sib npaug li 25 | Tsawg dua lossis sib npaug li 310 | Ntau dua lossis sib npaug li 45 |
| LC Board (Coil) | Ntau dua lossis sib npaug li 550 | 750-1000 Nws | Ntau dua lossis sib npaug li 25 | Tsawg dua lossis sib npaug li 310 | Ntau dua lossis sib npaug li 45 |
| Plaub Phaj | Ntau dua lossis sib npaug li 550 | 750-930 : kuv | Ntau dua lossis sib npaug li 25 | Tsawg dua lossis sib npaug li 310 | Ntau dua lossis sib npaug |
Kev kho cua sov ntawm 2507 stainless hlau
2507 superduplex stainless hlau yuav tsum tau tov annealing ntawm qhov kub ntawm 1020 thiab 1100 degrees (1868 thiab 2012 degrees F), ua raws li sai sai quenching nyob rau hauv dej kom ntseeg tau ib tug 50/50 austenitic -ferritic microstructure. Cov txheej txheem no dissolves teeb meem intermetallic compound theem thiab maximizes corrosion kuj. Kev txias kom zoo yog qhov tseem ceeb kom tsis txhob muaj brittleness.
Qhov txawv ntawm 2205 thiab 2507 yog dab tsi?
Qhov sib txawv tseem ceeb ntawm 2205 (duplex) thiab 2507 (super duplex) yog tias 2507 muaj cov ntsiab lus ntawm cov hlau ntau dua (ntau dua chromium, molybdenum thiab npib tsib xee), uas ua rau nws muaj zog dua corrosion thiab mechanical zog. Thaum 2205 yog cov khoom siv ntau yam thiab muaj zog rau kev siv dav dav, 2507 yog tsim los rau qhov chaw huab cua, nrog cov tshuaj chlorides siab thiab sib cuag nrog dej hiav txwv.
Qhov txawv ntawm S32760 thiab 2507 yog dab tsi?
Ob leeg S32760 (tseem hu ua F55 lossis UR52N +) thiab 2507 (UNS S32750) yog super duplex stainless hlau. S32760 muaj tungsten (kwv yees li 0.75%) thiab cov ntsiab lus molybdenum ntau dua (kwv yees li 3.5%), uas txhim kho nws cov corrosion kuj nyob rau hauv acidic thiab chloride ib puag ncig. Nyob rau hauv sib piv, 2507 muaj ntau dua chromium (kwv yees 25%) thiab nitrogen, muab nws superior txhua yam muaj zog thiab ntau dua rau pitting corrosion nyob rau hauv seawater daim ntaub ntawv. Vim yog qhov sib ntxiv ntawm tungsten thiab xav tau kev ua haujlwm ntau dua, S32760 feem ntau kim dua 2507.
Dab tsi yog 2507 stainless hlau siv rau?
2507 super duplex stainless hlau feem ntau yog siv nyob rau hauv hnyav, corrosive ib puag ncig uas yuav tsum tau tshwj xeeb lub zog, tshwj xeeb tshaj yog nyob rau hauv high chloride daim ntaub ntawv, nyob rau hauv marine ib puag ncig, thiab nyob rau hauv cov roj thiab roj kev lag luam. Nws yog qhov kev xaiv zoo tshaj plaws rau cov nroj tsuag desalination, cov txheej txheem tshuaj lom neeg thiab cov kav dej hauv qab dej, ua tsaug rau nws cov kev tiv thaiv zoo tshaj rau pitting thiab crevice corrosion.
UNS S32750 Stainless Steel Pipe Supplier
Raws li lub ntiaj teb cov khoom lag luam ntawm Super Duplex stainless hlau, GNEE tuav cov khoom lag luam zoo tshaj li 1,500 tons. Peb cov khoom lag luam ua tau raws li ASTM A790, A789 thiab A182 tus qauv, nrog rau NACE MR0175 / ISO 15156 (tus qauv tseem ceeb rau kev siv hauv cov roj acid ib puag ncig). Npog tag nrho cov phab ntsa loj (Sch 10S, 40S thiab 80S), peb xyuas kom meej tias cov ntaub ntawv rau cov haujlwm ceev tuaj yeem xa tuaj tsis pub dhau 7 mus rau 10 hnub.
Muaj cov ntaub ntawv khoom UNS S32750 (Super Duplex 2507)
| Yam khoom | Hom kev tsim khoom | Txuj cai | Sab nraud txoj kab uas hla (OD) | Phab ntsa Thickness / SCH Gauge |
|---|---|---|---|---|
| seamless raj | Kub dov / Cold drawn | ASTM A790, ASME SA790 | 1/2 "- 24" (DN15 - DN600) | SCH 10S, 40S, 80S, XS, XXS |
| welded cev | EFW, ERW, Longitudinal vuam | ASTM A790, ASME SA790 | 6 "- 60" (DN150-DN1500) | SCH 5S, 10S, 20S, 40S, 80S |
| Me seamless raj | Txias dov / Ci annealed | ASTM A789, ASME SA789 | 6.0mm-219.1 hli | 0.5 hli-20mm |
| me me welded raj | Nruam vuam | ASTM A928, ASME SA928 | 12.7mm-323.8 hli | 1.0 |
ASME SA928 UNS S32750 Stainless hlau welded yeeb nkab
Ntxiv rau kev muab UNS S32750 alloy seamless thiab welded yeeb nkab, peb muab ntau yam sib xws S32750 fittings, suav nrog kev cai tsim flanges, luj tshib, tees thiab forged fittings. Tsis tas li ntawd, peb muab cov kev pabcuam muaj nqis ntxiv xws li txiav rau qhov loj me, precision threading thiab U-shaped dabtsi yog khoov rau kev siv cov khoom siv hluav taws xob.
Yog tias koj qhov project xav tau UNS S32750 stainless hlau yeeb nkab, txais tos koj tso koj qhov kev txiav txim. Email:es@gescosteel.com
