347 yog niobium-muaj Austenitic stainless hlau, thaum 347h yog nws cov pa roj carbon ntau. Nyob rau hauv cov nqe lus uas muaj pes tsawg leeg,347tuaj yeem pom raws li ib qho alloy muab tau los ntawm kev ntxiv niobium rau lub hauv paus ntawm 304 stainless hlau. Niobium yog lub ntiaj teb tsis tshua muaj vaj txiv ntoo uas ua haujlwm zoo sib xws rau titanium. Thaum ntxiv rau cov alloy, nws tuaj yeem kho cov qauv grain, tiv thaiv intergranular corrosion, thiab txhawb kev ua kom tawv nqaij cuam tshuam.
Ⅰ.corresponding rau cov qauv hauv tebchaws
| Phiaj suav | 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.themical muaj pes tsawg leeg ntawm s34700 stainless hlau bar
| Teem nqi | C | Mn | Si | S | P | Fe | Ni | Cr |
| 347 | 0.08 max | 2.00max | 1.0 max | 0.030max | 0.045 Max | 62.74 min | 9-12Max | 17.00-19.00 |
| 347H | 0.04 - 0.10 | 2.0 max | 1.0 max | 0.030 max | 0.045 Max | 63.72 min | 9-12Max | 17.00 - 19.00 |
Ⅲⅲ.347 347 34HH Stainless Hlau Cov Khoom Siv Neeg Kho Tshuab
| Ceev | Melting taw tes | Tensile lub zog (mpa) min | Yield zog 0.2% pov thawj (MPA) min | Elongation (% hauv 50 hli) min |
| 8.0 g / cm3 | 1454 ° C (2650 ° F) | PSI - 75000, MPa - 515 | PSI - 30000, MPA - 205 | 40 |
Ⅳ.Material Procerties
①excellent corrosion tsis kam piv rau 304 stainless hlau.
Ntawm 427 ~ 816 ℃, nws tuaj yeem cuam tshuam qhov tsim ntawm chromium carbide, tiv thaiv sensitizes, thiab muaj kev tsis kam mus rau intergranular corrosion.
③it tseem muaj qee qhov kev nkag rau hauv qhov chaw muaj zog oxidizing ib puag ncig nrog qhov kub ntawm 816 ℃.
④EIEIE rov qab ntxiv thiab ua daim ntawv, yooj yim rau Weld.
⑤good tsawg kub nruj.
Ⅴ.Qhov khoom noj
Kev ntsuas kub siab ntawm347 & 347HStainless hlau yog qhov zoo dua li ntawm 304 thiab 321. Nws yog dav siv nyob rau hauv cov kav dej tseem ceeb, cov khoom siv roj av, cov roj tso pa tawm ntawm cov roj cua tshuab hluav taws xob, thiab hauv cov khoom siv me me thiab kub tsis tshaj 850 ° C. Seem uas ua haujlwm nyob rau hauv cov xwm txheej, thiab lwm yam.
Lub Sijhawm Post: Tsib Hlis-11-2024