347 ke tšepe e sa jeleng ea austenitic e nang le niobium, ha 347H e le mofuta oa eona oa khabone e phahameng. Mabapi le sebopeho,347e ka bonoa e le motsoako o tsoang ho eketsa niobium ho ea botlaaseng ba tšepe e sa hloekang ea 304. Niobium ke ntho e sa tloaelehang ea lefats'e e sebetsang ka mokhoa o ts'oanang le titanium. Ha e eketsoa ho alloy, e ka ntlafatsa sebopeho sa lijo-thollo, e hanela ho bola ha intergranular, le ho khothalletsa ho thatafala ha lilemo.
Ⅰ.E tsamaellanang le maemo a naha
| China | GBIT 20878-2007 | 06Cr18Ni11Nb | 07Cr18Ni11Nb(1Cr19Ni11Nb) |
| US | ASTM A240-15a | S34700,347 | S34709,347H |
| JIS | J1S G 4304:2005 | SUS 347 | - |
| DIN | EN 10088-1-2005 | X6CrNiNb18-10 1.4550 | X7CrNiNb18-10 1.4912 |
Ⅱ. TLHAKISO EA CHEMICAL EA S34700 Stainless steel bar
| Kereiti | C | Mn | Si | S | P | Fe | Ni | Cr |
| 347 | 0.08 max | 2.00 max | 1.0 boholo | 0.030 max | 0.045 boholo | 62.74 mets | 9-12 max | 17.00-19.00 |
| 347H | 0.04 - 0.10 | 2.0 boholo | 1.0 boholo | 0.030 boholo | 0.045 boholo | 63.72 mets | 9-12 max | 17.00 - 19.00 |
Ⅲ.347 347H Thepa ea tšepe e sa hloekang Thepa ea Mechini
| Botenya | Melting Point | Tensile Strength (MPa) min | Matla a Kotulo 0.2% Bopaki (MPa) min | Elongation (% in 50mm) min |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi - 75000 , MPa - 515 | Psi - 30000 , MPa - 205 | 40 |
Ⅳ.Thepa ea lintho tse bonahalang
①Ho hanyetsa kutu e ntle haholo ha ho bapisoa le tšepe e sa hloekang ea 304.
② Pakeng tsa 427 ~ 816 ℃, e ka thibela ho thehoa ha chromium carbide, e hanela maikutlo, 'me e na le khanyetso e ntle ea ho bola ha intergranular.
③ E ntse e na le khanyetso e itseng ea creep sebakeng se matla sa oxidizing se nang le mocheso o phahameng oa 816 ℃.
④Ho bonolo ho atolosoa le ho theha, ho bonolo ho tjheseletsa.
⑤Bothata bo botle ba mocheso o tlase.
Ⅴ.Linako tsa likopo
Ts'ebetso e phahameng ea mocheso oa347&347Htšepe e sa hloekang e molemo ho feta ea 304 le 321. E sebelisoa haholo ho lifofane, petrochemical, lijo, pampiri le liindasteri tse ling, tse kang liphaephe tse kholo tsa ho ntša metsi le liphaephe tsa makala tsa enjene ea lifofane, liphaephe tse chesang tsa khase ea li-turbine compressors, le ka meroalo e menyenyane. le mocheso o sa feteng 850°C. Likarolo tse sebetsang tlas'a maemo, joalo-joalo.
Nako ea poso: May-11-2024