Sus321 Stainless Hlau vs. Sus430: Corrosion Kuj
Apr 16, 2025
Tso lus
Sus321 vs. sus430 stainless hlau corrosion: yuav ua li cas xaiv cov khoom zoo?
Thaum xaiv cov ntaub ntawv hlau stainless hlau,Corrosion Kujyog ib qho ntawm cov ntsiab lus tseem ceeb tshaj plaws rau cov engineers thiab cov kws tshaj lij kev ua haujlwm.Sus321thiabSus430yog ob feem dav dav siv stainless hlau qib, sawv cevAUSTENITICthiabferritichom feem. Lawv txawv nyob rau hauv lawv corrosion cwj pwm thiab haum rau cov chaw sau ntawv sib txawv.
Nto Kho ntawm Sus321 Stainless Hlau Phaj
1. Sus321 thiab sus430 stainless hlau: kev sib xyaw yooj yim thiab kev sib piv
| Ntiag tug | Sus321 (Austenicic) | Sus430 (Ferritic) |
|---|---|---|
| Lub ntsiab alloying ntsiab | Cr, ni, ti | Cr |
| Cov ntsiab lus npib tsib xee | 9%–12% | Tsis muaj (lossis tsawg heev) |
| Titanium cov ntsiab lus | Yog lawm (ruaj khov austenite, tiv thaiv kev txhim kho corrosion) | Tsis muaj |
| Kev tsim | AUSTENITIC | Ferritic |
2. Sus321 vs. sus430 stainless hlau: corrosion resistance kev sib piv
| Huab cua | Sus321 Corrosion Kuj | Sus430 pitting |
|---|---|---|
| Atmospheric corrosion | Zoo heev (suav nrog cov tub rog ib puag ncig) | Zoo (haum rau cov tsev nyob sab hauv tsev lossis thaj chaw ib puag ncig) |
| Chloride-nplua nuj ib puag ncig (piv txwv li, qab ntsev lossis dej) | Muaj zog tsis kam, qog pitting tsis kam | Nquag rau pitting thiab kev ntxhov siab corrosion tawg |
| Acidic ib puag ncig (xws li sulfuric, phosphoric acids) | Kev ua siab zoo nyob rau hauv cov kua qes qis | Cov kua qaub tsis zoo, tsis pom zoo |
| Intergranular corrosion | Tsawg txoj kev pheej hmoo (TI stabilizes carbides ntawm cov ciaj ciam) | Kev pheej hmoo siab dua; yuav tsum tau ceev faj thermal \/ weld tswj |
| Kev Kub-Kub Oxidation | Haum rau kev ncua ntev mus txog ~ 870 degree | Tsis tshua muaj neeg ruaj khov; Oxide txheej yuav tev nyob rau hauv tshav kub |
3. Sus321 vs. sus430 stainless hlau: Thov thov
Thaum Twg Yuav Xaiv Sus321:
Ib puag ncig qhov yuav tsum tau kub rau cov khoom siv roj av, xws li cov khoom siv petrochemical, kev hloov pauv cua sov, cov khoom siv hluav taws xob.
Raug rau hauv nruab nrab lossis theem siab kub (600-870 degree).
Welded qauv uas yuav tsum muaj corrosion tsis kam rau lub sijhawm.
Thaum Twg Yuav Xaiv Sus430:
Tus nqi-rhiab cov haujlwm hauv cov khoom siv hauv chav tsawg, xws li cov khoom siv hauv chav ua noj, dai kom zoo nkauj, sab hauv tsev.
Ib puag ncig uas tsis koom nrog cov kua qaub los yog chloride sib kis.
Cov ntawv thov uas yuav tsum muaj cov khoom sib nqus (sus430 yog sib nqus).
Xa kev nug