Super Duplex Steel S32750 Tube, Fittings, Bars, Ntawv, Forgings
Cov khoom muaj
Seamless raj, phaj, pas nrig, forgings, fasteners, yeeb nkab fittings.
Cov qauv tsim
| Cov qauv tsim | |
| Khoom | ASTM |
| Bars, strips thiab profiles | 276 Ib., 484 |
| Phaj, Sheet thiab Sawb | 240 Ib., 480 |
| Seamless thiab Welded Pipes | ib 790a999 |
| Seamless thiab Welded Yeeb Nkab Fittings | A 789, A 1016 |
| Fittings | ib 815a960 |
| Forged los yog dov yeeb nkab flanges thiab forged fittings | 182 Ib., 961 |
| Forging billets thiab billets | 314, HWV 484: A |
Tshuaj muaj pes tsawg leeg
| % | Fe | Cr | Ni | Mo | C | Mn | Si | P | S | Cu | N |
| Min | sib npaug | 24.0 Nws | 6.0 | 3.0 | 0.24 ib | ||||||
| Max | 26.0 Nws | 8.0 ib | 5.0 | 0.030 Nws | 1.20 | 0.80 ib | 0.035 ib | 0.020 ib | 0.50 ib | 0.32 ib |
Lub cev muaj zog
| Qhov ntom | 7.75g 3 |
| Melting | 1396-1450 ℃ |
S32750 Khoom Khoom
2507 yog ib tug super duplex stainless hlau nrog zoo corrosion kuj thiab lub zog tshaj 2205. Nws combines cov txiaj ntsig zoo tshaj plaws ntawm ntau cov ferritic thiab austenitic steels thiab, vim nws cov ntsiab lus chromium thiab molybdenum siab, muaj kev tiv thaiv zoo heev rau uniform, pitting thiab crevice corrosion.Cov qauv dual-theem ua kom ntseeg tau tias cov hlau muaj kev ua haujlwm siab rau kev ntxhov siab corrosion cracking thiab siab mechanical zog.
Cov ntsiab lus siab dua ntawm chromium thiab molybdenum ua rau nws muaj zog tiv thaiv tag nrho cov organic acids xws li formic acid, acetic acid, thiab lwm yam, thiab kuj muaj zog corrosion kuj rau inorganic acids, tshwj xeeb tshaj yog cov uas muaj chlorides.Piv nrog rau 904L, uas yog tshwj xeeb tsim los tiv thaiv cov ntshiab sulfuric acid, 2507 muaj zog corrosion kuj rau diluted sulfuric acid tov nrog chloride ions.
Qib 316L tsis tuaj yeem siv rau hauv ib puag ncig hydrochloric acid, nws yuav raug rau hauv zos corrosion lossis tag nrho corrosion, thaum 2507 tuaj yeem siv rau hauv ib puag ncig hydrochloric acid diluted, muaj zog tiv thaiv qhov chaw thiab muaj peev xwm tiv thaiv corrosion.Cov ntsiab lus qis carbon ntawm 2507 zoo heev txo qhov kev pheej hmoo ntawm carbide nag lossis daus hauv intergranular thaum kho cua sov thiab, yog li ntawd, nws muaj peev xwm tiv taus carbide-txog intergranular corrosion.
2507 muaj lub zog compressive siab, cuam tshuam lub zog thiab qis thermal expansion coefficient thiab siab thermal conductivity, cov yam ntxwv no haum rau ntau yam qauv thiab cov khoom siv tshuab.
2507 yuav tsum tsis txhob muab tso rau hauv ib puag ncig kub siab tshaj 300 ℃ rau lub sijhawm ntev, uas yuav ua rau nws lub zog tsis muaj zog.
Corrosion Resistance Ntawm S32750 Khoom
1. Corrosion kuj
Qhov siab dua chromium thiab molybdenum cov ntsiab lus ntawm SAF 2507 ua rau nws tiv taus ntau corrosion ntawm cov organic acids xws li formic acid thiab acetic acid.SAF 2507 alloy kuj muaj zog tiv thaiv inorganic acids, tshwj xeeb tshaj yog cov uas muaj chlorides.corrosion kuj.
Piv nrog rau 904L, SAF2507 muaj zog corrosion kuj rau diluted sulfuric acid tov nrog chloride ions.904L yog ib qho alloy hauv lub xeev austenitic, tshwj xeeb uas tsim los tiv thaiv cov ntshiab sulfuric acid corrosion.
316L qib tsis tuaj yeem siv rau hauv ib puag ncig hydrochloric acid, nws yuav raug rau hauv zos corrosion lossis tag nrho corrosion.SAF2507 tuaj yeem siv nyob rau hauv dilute hydrochloric acid ib puag ncig, muaj zog tiv thaiv qhov chaw thiab muaj peev xwm tiv thaiv crevice corrosion.
2. Intergranular corrosion
Cov ntsiab lus qis dua ntawm SAF 2507 zoo heev txo qhov kev pheej hmoo ntawm intergranular carbide nag lossis daus thaum kho cua sov, yog li ntawd, cov hlau no tiv taus cov carbide-txog intergranular corrosion.
3. Kev nyuaj siab corrosion cracking
Cov qauv duplex ntawm SAF 2507 ua rau nws tiv taus kev ntxhov siab corrosion tawg.Vim nws cov ntsiab lus alloy siab dua, kev tiv thaiv corrosion thiab lub zog ntawm SAF 2507 zoo dua 2205.
Cov kab nrib pleb yog yuav luag tsis muaj nyob hauv kev tsim kho, thiab lwm yam, uas ua rau cov hlau tsis muaj zog ntau dua rau corrosion hauv chloride ib puag ncig.SAF 2507 muaj lub zog muaj peev xwm tiv thaiv kev tawg.Lub isocorrosion nkhaus ntawm SAF 2507 hauv sulfuric acid uas muaj 2000ppm chloride ions 0.1 hli / xyoo;isocorrosion nkhaus hauv hydrochloric acid 0.1 hli / xyoo.
S32205 Cov Khoom Siv Cov Khoom Siv
2507 stainless hlau yog siv hauv kev lag luam roj thiab roj;offshore Shipotian roj platforms (kub exchanger raj, dej kho thiab dej system, hluav taws xob tiv thaiv systems, dej tshuaj tsuag tshuab, dej stabilization systems; petrochemical khoom; desalination (desalination) cov cuab yeej (thiab cov khoom siv nyob rau hauv High-pressure kav, seawater kav); mechanical thiab cov khoom siv uas yuav tsum tau muaj zog thiab siab corrosion kuj; combustion (kua pa) cov khoom siv roj purification.
Kev lag luam chemical pipelines, ntim, kub exchangers, seawater pipelines nyob rau hauv desalination nroj tsuag, roj thiab gas kev lag luam khoom, fais fab nroj tsuag flue roj desulfurization tshuab, ntxhua khaub ncaws, nqus yees, tshuaj kua tankers.
