1.4404 stainless hlau vs.1.4435: Dab tsi yog qhov sib txawv?
Apr 25, 2025
Tso lus
Ntawm no yog qhov tseeb, kev sib piv ua ke ntawm 1.440 (316L) thiab 1.4435 (316L nrog ntau dua mo thiab ni)
Dab tsi yog1.4404 stainless hlausib npaug?
1.440 (316L stainless hlau)
🔹European Txuj: Sau rau hauv en 10088-2}}: 2014 raws x2cnimo {3}}.
🔹Cov qhab nia sib npaug: ASTM 316L (Uns unrert s31603), Tuam Tshoj 022cr17NI12MO2.
🔹Cov yam ntxwv: Ntxiv-Qis Roj Roj Roj Roj Roj Roj Roj Roj (C Tsawg dua li 0 3%) nrog 2.0-2.5% molybdenum (mo). Muaj zoo corrosion tsis kam nyob rau hauv ib puag ncig zoo li dej hiav txwv thiab me ntsis acids \/ alkalis. Dav siv hauv tshuaj, kev kho mob, thiab marine engineering cov haujlwm.
Dab tsi yog stainless hlau 1.4435?
🔹Qeb Keeb Qeb: Yav dhau los tau txiav txim siab ib qho sib npaug rau 316L (xws li, DIN 17400), tab sis tam sim no feem ntau yuav pab tau hauv en cov qauv.
🔹Tau Qeb Tshwj Xeeb: Sau tseg hauv qee cov qauv (piv txwv li, en 10088-1}}: 2005) li X2Cnimo {3}}. Lub npe hu ua 316LMod lossis 724L, tshwj xeeb tsim rau cov chaw muaj kev xeb ntau.
Cov yam ntxwv: Ntxiv-Tsawg-Tsawg Cov pa roj carbon (C Tsawg dua li 0}} {10}}}}}}} {%) cov ntsiab lus. Cov khoom ua kom zoo dua rau kev tiv thaiv zoo dua los intergranular thiab xaiv corrosion. Feem ntau siv nyob rau hauv urea ntau lawm, kws tshuaj, thiab lwm cov ntawv thov siab.
2.1.4404 stainless hlau vs.1.4435: Tshuaj lom neeg & kev sib piv ua tau zoo
| Chaw ua uas tsis tau haus | 1.4404 (316L) | 1.4435 (Hloov 316L) |
|---|---|---|
| Molybdenum (mo) | 2.0–2.5% | 2.5-3. {{{0% (txhim kho cliv tsis kam) |
| Npib tsib caug (ni) | 10.0–13.0% | 12.5-15. {{0% (txhim kho kev ruaj khov sab nraud) |
| Nitrogen (n) | Tsawg dua los yog sib npaug rau 0. 11% (txawv) | Tsawg dua lossis sib npaug rau 0. 11% (stricter hauv qee cov qauv) |
| Cov ntsiab lus Ferrite | Tsis teev | Tsawg dua los yog sib npaug rau 1. {0% (minimizes intergranular corrosion) |
| Pitting tiv taus sib npaug (pren) | 26–28 | 28-30 (rau kev mob corrosion) |
| Sib Tw Sib Tham Corrosion | Yuav tsum dhau ASTM A262 Xyaum E | Yuav tsum dhau HUUY TEST (5 mus rau hauv boiling 65% hnoo₃, corrosion tus nqi tsawg dua lossis sib npaug}. 18 hli) |
3.1.4404 Stainless Hlau vs.1.4435:Daim ntawv thov
🔹1.440 (316L) cov ntawv thov raug
Kev Tsim Txiaj: Desalination Systems, Tshuaj Txhuam Cov Tshuaj, Khoom Noj Khoom Noj Khoom Siv
Welded qauv Welded: Haum rau tag nrho-tuab vuam tsis muaj preheating
Cov teb cov khoom siv kho mob (cov khoom siv kho mob (tsis yog Ultraclean yuav tsum tau), cov khoom siv chav ua noj
🔹1.4435 (Hloov kho 316L) cov ntawv thov raug
Urea Kev Lag Luam: urea synthesis Yees, Ammonium Carbamate Twj
Lub Tshuaj & Cov Khoom Noj: Cov Pipilines tsis muaj zog, Fermenters
Kev tso tsheb hlau luam ua: hydrochloric acid tso tsheb hlau luam, fluorinated Media Pipelines
4. 1.4404 Stainless Hlau vs.1.4435: Kev sib txawv vuam sib txawv
🔹1.4404: Cov qauv vuam cov txheej txheem (tsov, mig), siv er316l electrodes (piv txwv li, e316l {} {2}}), tsis muaj preheating xav tau.
🔹1.4435: Yuav tsum tau tswj tshav kub tshav kub kom tiv thaiv carbide nag lossis. Siv Niobium- lossis Titanium-Stabilized Fitters (piv txwv li, E316LNB). Tom qab-weld tov annelinging (1050-1150 degree, sai sai txias) yog pom zoo.
Xa kev nug