Puas yog 321 stainless hlau zoo dua 304?
Tso lus
Nrog rau qhov kev thov dav ntawm cov hlau stainless hauv ntau qhov kev lag luam, tib neeg txoj kev xav tau rau nws qhov zoo tau nce zuj zus. Ntawm ntau hom stainless hlau, 321 thiab 304 stainless hlau yog qhov feem ntau. Yog li, qhov twg yog qhov zoo dua, 321 stainless hlau lossis 304 stainless hlau? Kab lus no yuav tshuaj xyuas qhov no.
Los ntawm cov kev pom ntawm cov tshuaj muaj pes tsawg leeg, ob qho sib txawv. 3 0} 4 stainless hlau muaj 18% chromium thiab 8% npib chromium, thaum 321 chromium, 9% npib tsib caug thiab 0.3% titanium. Vim qhov sib ntxiv ntawm titanium, 321 stainless hlau zoo dua li 304 nyob rau hauv cov nqe lus ntawm kev kub siab thiab corrosion tsis kam, thiab yog qhov haum rau cov kev kub siab ib puag ncig.
| Hom | 321 stainless hlau | 304 Stainless Hlau |
|---|---|---|
| Tshuaj Muaj Tshuaj | {{{{0}}}% cr, 9% ni, 0.3% TI (ruaj khov) - Cov pa roj carbon tsawg (tsawg dua lossis sib npaug rau 0. 08%) |
{{0 {0}}% cr, 8% ni - Cov pa roj carbon tsawg (tsawg dua lossis sib npaug rau 0. 08%) |
| Kub-Kub Kuj | Kev siv ntev ntev txog 850 degree (zoo oxidation tiv thaiv) | Kev siv ntev ntev txog 870 degree (nruab nrab oxidation tiv taus) |
| Corrosion Kuj | - kev tiv thaiv zoo heev rau intergranular corrosion (vim yog ti) - zoo dua 304 hauv qhov kub-kub sulfuric acid |
Zoo dav dav corrosion resistance (resistant rau cov kua qaub, alkalis, thiab ntsev) |
Hais txog cov khoom siv lub cev, lub zog tensile ntawm 321 stainless hlau loj dua li ntawm 124. Qhov no yog tias muaj zog thiab hardness.
| Hom | 321 stainless hlau | 304 Stainless Hlau |
|---|---|---|
| Lub zog tensile | Ntau dua los yog sib npaug rau 520 mpa (anealed) | Ntau dua los yog sib npaug rau 515 MPA (anealed) |
Nyob rau hauv cov nqe lus ntawm kev ua cov kev ua tau zoo, 321 stainless hlau yog qhov nyuaj rau cov txheej txheem tshaj 304. Lub xub ntiag ntawm Titanium ua rau nws nyuaj dua, uas nce qhov nyuaj ntawm kev ua. 304 Stainless hlau yog yooj yim rau cov txheej txheem vim nws qhov hnyav dua.
| Hom | 321 stainless hlau | 304 Stainless Hlau |
|---|---|---|
| Hwj txwv | Yuav tsum muaj kev kho kom sov-weld kom tiv thaiv cov rhiab | Zoo weldability; Tsis Muaj Kev Kho Mob Tom Qab Weld |
| Muaj meej | Me ntsis nyuaj rau daim foos ntau dua 304 vim Ti ntxiv | Firjust zoo heev rau kev sib sib zog nqus duab / dabtsi yog khoov |
| Lub magnetism | Tsis yog-sib nqus (Austenitic) | Tsis yog-sib nqus (Austenitic) |
| Tus nqi | Siab dua (vim yog ti alloying) | Qis dua (qauv Austenitic qib) |
| Cov Kev Siv Raug Raug | Cov Hluav Taws Xob Tshav Kub Kub, Boilers, Nuclelect Cheebtsam | Khoom Siv Khoom Noj Khoom Haus, Khoom Siv Kho Mob, Kho Kom Zoo Nkauj |
Hauv cov ntsiab lus xaus, 321 thiab 304 Stainless hlau txhua tus muaj lawv tus kheej thiab qhov tsis zoo. Yog tias siv hauv qhov kub thiab txias lossis yuav tsum muaj ntau dua corrosion tsis kam, 321 zoo dua; Yog tias qhov tseem ceeb tshaj plaws ntawm kev ua tiav lossis tswj tus nqi, 304 yog qhov zoo dua.
