Super Duplex Steel S32750 Tube, Fittings, Bars, Sheets, Forgings
Lihlahisoa tse fumanehang
Tube e se nang seam, Plate, Ropa, Forgings, Fasteners, Pipe Fittings.
Maemo a Tlhahiso
| Litekanyetso tsa tlhahiso | |
| Sehlahisoa | ASTM |
| Li-bar, strips le profiles | A 276, A484 |
| Letlapa, Leqephe le Lekhapetla | A 240, A480 |
| Liphaephe tse se nang Seam le tse cheselitsoeng | A 790, A 999 |
| Lisebelisoa tsa Pipe tse Seamless le tse Welded | A 789, A 1016 |
| Lisebelisoa | A 815, A960 |
| Li-flange tsa lipeipi tse entsoeng kapa tse phuthoang le lisebelisoa tse entsoeng | A 182, A961 |
| Ho theha li-billet le li-billet | A 314, A484 |
Sebopeho sa Lik'hemik'hale
| % | Fe | Cr | Ni | Mo | C | Mn | Si | P | S | Cu | N |
| Min | leka-lekanya | 24.0 | 6.0 | 3.0 | 0.24 | ||||||
| Max | 26.0 | 8.0 | 5.0 | 0.030 | 1.20 | 0.80 | 0.035 | 0.020 | 0.50 | 0.32 |
Lintho Tsa 'Mele
| Botenya | 7.75 g/cm3 |
| Ho qhibiliha | 1396-1450 ℃ |
Lisebelisoa tsa S32750
2507 ke super duplex tšepe e sa hloekang e nang le khanyetso e ntle ea kutu le matla ho feta 2205. E kopanya thepa e molemo ka ho fetisisa ea litšepe tse ngata tsa ferritic le austenitic 'me, ka lebaka la chromium ea eona e phahameng le molybdenum, e na le khanyetso e babatsehang ea junifomo, pitting le crevice corrosion.Sebopeho sa mekhahlelo e 'meli se tiisa hore tšepe e na le khanyetso e phahameng ea khatello ea maikutlo ea ho senya le matla a phahameng a mochine.
Likahare tse phahameng tsa chromium le molybdenum li etsa hore e be le khanyetso e matla ho ho bola ha kakaretso ea li-organic acid tse kang formic acid, acetic acid, joalo-joalo, hape e na le khanyetso e matla ea kutu ho li-inorganic acid, haholo-holo tse nang le chloride.Ha ho bapisoa le 904L, e etselitsoeng ka ho khetheha ho hanela asiti e hloekileng ea sulfuric, 2507 e na le matla a matla a ho hanyetsa ho bola ho sulfuric acid e hlapollotsoeng le li-ion tsa chloride.
Kereiti ea 316L e ke ke ea sebelisoa tikolohong ea hydrochloric acid, e ka ba tlas'a kutu ea lehae kapa ho bola ka kakaretso, ha 2507 e ka sebelisoa tikolohong e hlapolotsoeng ea hydrochloric acid, e nang le matla a matla a anti-spot le anti-crevice corrosion.Likahare tse tlase tsa khabone tsa 2507 li fokotsa haholo kotsi ea pula ea carbide ho intergranular nakong ea kalafo ea mocheso, ka hona, e hanyetsana haholo le kutu e amanang le carbide intergranular.
2507 e na le matla a phahameng a khatello, matla a ts'usumetso le coefficient e tlase ea katoloso ea mocheso le conductivity e phahameng ea mocheso, litšobotsi tsena li loketse likarolo tse ngata tsa meralo le likarolo tsa mochini.
2507 ha ea lokela ho behoa sebakeng sa mocheso o phahameng ho feta 300 ℃ nako e telele, e ka fokolisang ho tiea ha eona.
Corrosion Resistance Of S32750 Material
1. Ho hanyetsa kutu
Likahare tse phahameng tsa chromium le molybdenum tsa SAF 2507 li etsa hore e khone ho mamella ho bola ha bongata ba li-organic acid tse kang formic acid le acetic acid.SAF 2507 alloy e boetse e na le khanyetso e matla ho li-inorganic acid, haholo-holo tse nang le chloride.khanyetso ea kutu.
Ha e bapisoa le 904L, SAF2507 e na le khanyetso e matla ea kutu ho diluted sulfuric acid e kopantsoeng le li-ion tsa chloride.904L ke motsoako sebakeng sa austenitic, se etselitsoeng ka ho khetheha ho hanela kutu e hloekileng ea sulfuric acid.
316L kereiti e ke ke ea sebelisoa tikolohong ea hydrochloric acid, e kanna ea ba tlas'a kutu ea lehae kapa ho bola ka kakaretso.SAF2507 e ka sebelisoa tikolohong e hlapollang ea hydrochloric acid, e nang le matla a matla a ho thibela letheba le anti-crevice corrosion.
2. Intergranular corrosion
Likahare tse tlase tsa khabone tsa SAF 2507 li fokotsa haholo kotsi ea pula ea intergranular carbide nakong ea kalafo ea mocheso, ka hona, alloy ena e hanyetsana haholo le kutu e amanang le carbide e amanang le intergranular.
3. Stress corrosion cracking
Sebopeho sa duplex sa SAF 2507 se etsa hore e hanane haholo le khatello ea maikutlo ea kutu.Ka lebaka la litaba tsa eona tse phahameng tsa alloy, khanyetso ea kutu le matla a SAF 2507 li betere ho feta 2205.
Mapetsong a batla a ke ke a qojoa mohahong, joalo-joalo, e leng se etsang hore tšepe e sa hloekang e hlaselehe habonolo libakeng tsa chloride.SAF 2507 e na le bokhoni bo matla ba ho hanela ho bola ha mapheo.The isocorrosion curve ea SAF 2507 ka sulfuric acid e nang le 2000ppm chloride ions 0.1 mm / selemo;isocorrosion curve ka hydrochloric acid 0.1 limilimithara / selemo.
S32205 Material Application Areas
2507 tšepe e sa hloekang e sebelisoa indastering ea oli le khase;offshore Shipotian oli platforms (li-tubes tse futhumatsang mocheso, phepelo ea metsi le lits'ebeletso tsa phepelo ea metsi, lits'ebetso tsa ts'ireletso ea mollo, lits'ebetso tsa ho fafatsa metsi, lits'ebetso tsa ho tsitsisa metsi; lisebelisoa tsa petrochemical; lisebelisoa tsa desalination (desalination) (le lisebelisoa tsa lipeipi tsa khatello e phahameng, lipeipi tsa metsi a leoatle); le likarolo tsa meralo tse hlokang matla a phahameng le ho hanyetsa ho hoholo ho matla; ho chesa (ho qeta) lisebelisoa tsa tlhoekiso ea khase.
Liphaephe tsa indasteri ea lik'hemik'hale, lijana, li-heaters tsa mocheso, liphaephe tsa metsi a leoatle ka har'a limela tsa ho ntša letsoai, lisebelisoa tsa indasteri ea oli le khase, lisebelisoa tsa motlakase tsa feme ea khase ea desulfurization, lisebelisoa tsa ho hlatsoa, litora tsa ho monya, litanka tsa lik'hemik'hale tsa metsi.
