Thaum sib piv1.4432nrog1.4404 (316L), corrosion kuj yog qhov feem ntau nrhiav tom qab thiab tseem ceeb tshaj plaws rau cov neeg yuav khoom hauv kev siv tshuaj lom neeg, dej hiav txwv thiab kev lag luam.
Txawm hais tias ob qib yog cov tsev neeg stainless hlau316l ua, lawv tus cwj pwm tiag tiag tiv thaiv corrosion tsis zoo ib yam.
Kab lus no tsom tshwj xeeb rau qhov sib txawv ntawm corrosion kuj ntawmTS EN 1.4432thiabEN 1.4404 (316L), pab kev yuav cov kws tshaj lij xaiv cov qib zoo rau txhua qhov chaw.
Stainless hlau EN 1.4432 yog dab tsi?cov
NwsEN 1.4432 (X2CrNiMo17-12-3)Nws yog cov pa roj carbon tsawg, siab-molybdenum austenitic stainless hlau, tiv taus corrosion, suav tias yog kev txhim kho ntawm 316L. Ua tsaug rau nws cov ntsiab lus molybdenum siab dua (kwv yees.2.5-3.0%), muaj kev tiv thaiv ntau dua rau pitting corrosion, yog qhov zoo tagnrho rau kev siv tshuaj lom neeg, petrochemical thiab marine daim ntawv thov uas yuav tsum tau ua kom muaj zog nyob rau hauv ib puag ncig hnyav.
1.4404 yuav muab 316L?cov
Nws1.4404(tseem hu uaAISI 316Llos yogX2CrNiMo17-12-2) yog ib qho tsis tshua muaj carbon austenitic stainless hlau nrog molybdenum, uas muaj corrosion kuj zoo heev, tshwj xeeb tshaj yog tiv thaiv pitting thiab crevice corrosion nyob rau hauv ib puag ncig chloride, ntxiv rau cov weldability zoo heev. Nws cov ntsiab lus tsis tshua muaj carbon muab nws tsis kam mus rau intergranular corrosion tom qab vuam, ua rau nws zoo tagnrho rau tshuaj, tshuaj, khoom noj khoom haus thiab marine daim ntaub ntawv.
Cov ntsiab lus sib piv: 1.4432 vs 1.4404 (316L)cov
|
Qibcov |
hom npecov |
Main featurecov |
|---|---|---|
|
1.4432 |
316L tau hloov kho |
Siab dua Mo thiab N cov ntsiab lus |
|
1.4404 |
316L txheem |
Kev ua tau zoo sib npaug |
1.4432 vs . 1.4404 (316L): Tshuaj muaj pes tsawg leegcov
Qhov sib txawv ntawm corrosion kuj pib nyob rau hauv cov tshuaj muaj pes tsawg leeg, tshwj xeeb tshaj yog nyob rau hauvMolybdenum (Mo)thiabnitrogen (N).
|
Khoom (%)cov |
1.4432cov |
1.4404 (316L)cov |
|---|---|---|
|
Cov pa roj carbon (C) |
Tsawg dua los yog sib npaug li 0.03 |
Tsawg dua los yog sib npaug li 0.03 |
|
Chromium (Cr) |
16.5-18.5 Nws |
16.5-18.5 Nws |
|
Nickel (Ni) |
10.0-13.0 Nws |
10.0-13.0 Nws |
|
Molybdenum (hli) |
2.5-3.0 Nws |
2.0-2.5 Nws |
|
Nitrogen (N) |
Tsawg dua lossis sib npaug li 0.11 |
Tsawg dua lossis sib npaug li 0.10 |
Mechanical zog: 1.4432 vs . 1.4404 (316L)cov
|
Khoomcov |
TS EN 1.4432cov |
EN 1.4404 (316L)cov |
|---|---|---|
|
Elastic txwv (Rp0.2) |
Ntau tshaj lossis sib npaug li 200 MPa |
Ntau tshaj lossis sib npaug li 200 MPa |
|
Tensile zog (Rm) |
500-700MPa |
500-700MPa |
|
Elongation (A5) |
Ntau dua lossis sib npaug li 40% |
Ntau dua lossis sib npaug li 40% |
|
Hardness |
Tsawg dua lossis sib npaug li 215 HB |
Tsawg dua lossis sib npaug li 215 HB |
|
Impact toughness |
Zoo heev |
Zoo heev |
Lub cev muaj zog: 1.4432 vs . 1.4404 (316L)cov
|
Khoomcov |
TS EN 1.4432cov |
EN 1.4404 (316L)cov |
|---|---|---|
|
Qhov ntom |
8.0 g / cm³ |
8.0 g / cm³ |
|
Melting point |
1370-1400 ° C |
1370-1400 ° C |
|
Thermal conductivity (20 degree) |
15.0 W / m K |
15.0 W / m K |
|
Cov. thermal expansion (20-100 degree) |
16.0 µm/m·K |
16.0 µm/m·K |
|
Hluav taws xob tiv taus (20 degree) |
0,74m ;ua |
0,74m ;ua |
|
Cov cua sov tshwj xeeb (20 degree) |
500 J/kg · K |
500 J/kg · K |
Puas yog 1.4432 corrosion resistant dua li 1.4404?cov
Piv rau1.4404 (316L), nws1.4432muaj ntau dua tiv thaiv corrosion ua tsaug rau nws cov ntsiab lus molybdenum siab dua (≈ 2.5–3.0%nyob rau hauv pem hauv ntej ntawm2.0-2.5%1.4404), ua kom haum rau qhov chaw nruj nrog cov ntsiab lus chloride siab. Ob leeg yog weldable, low-carbon austenitic stainless hlau, tab sis1.4432muaj ntau dua tsis kam rau pitting corrosion, thaum1.4404yog tus qauv "lub hom phiaj dav dav" cov ntaub ntawv.
1.4432 yuav muab 316L?cov
Yog lawm,TS EN 1.4432Nws yog suav hais tias yog ib qho sib npaug lossis ntau dua alloyed thiab txhim kho version ntawm lubAISI 316L(316 tsawg carbon). Ob leeg yog austenitic stainless hlau nrog cov khoom zoo sib xws thiab sib hloov tau rau kev siv corrosion siab, tab sis1.4432Nws feem ntau muaj me ntsis ntxiv molybdenum kom zoo dua nyob rau hauv ib puag ncig nrog chlorides.
Qhov twg zoo dua rau kev siv marine, 1.4432 lossis 316L?cov
Nws1.4432 (X2CrNiMo17-12-3), debido a su mayor contenido de molibdeno (>2.5%) thiab npib tsib xee, muaj kev ua tau zoo dua316L tus qauv (1.4404)Nyob rau hauv kev txhoj puab heev marine ib puag ncig, muab kev tiv thaiv ntau dua rau pitting thiab zawj corrosion vim chlorides. Txawm tias nws316l uayog cov pa "marine qib" stainless hlau, lub1.4432muab kev ua tau zoo tshaj plaws ntawm cov khoom tseem ceeb hauv dej hiav txwv.
Kev lag luam kawcov
Yog tias koj muaj qhov project xav tau rau stainless hlau tuav316l 1.4404 ib, zoo siab txais tos koj tso koj daim ntawv xaj.GNEEmuaj cov khoom muag loj ntawm cov khoom nrov rau koj xaiv los ntawm. Nws tuaj yeem ua tiav rau hauv ntau yam muaj txiaj ntsig zoo li daim hlau, coils, raj, tuav thiab xaim. Rau cov ncauj lus kom ntxaws txog tshuaj muaj pes tsawg leeg thiab kuaj dawb, thov hu rau peb tam sim. Peb muab cov nqi sib tw thiab kev pabcuam zoo heev.
