Stainless hlau 316L vs . 904L: Yuav ua li cas xaiv cov khoom zoo
Stainless hlau 316L vs . 904L: Yuav ua li cas xaiv cov khoom zoo
Hauv ib puag ncig xws li marine, kev kho mob, lossis kev ua zaub mov, qhov twg tus qauv thiab tus nqi - yuav tsum muaj kev tiv thaiv corrosion, xaiv 316L stainless hlau, uas muaj qhov sib npaug zoo ntawm kev ua haujlwm thiab tus nqi. Txawm li cas los xij, rau cov xwm txheej hnyav uas muaj cov kua qaub muaj zog, cov tshuaj chloride siab, lossis cov khoom siv petrochemical, 904L stainless hlau yuav tsum tau xaiv . 904L muaj cov alloy zoo tshaj plaws (nickel ntau dua, molybdenum, thiab tooj liab cov ntsiab lus), ua rau nws tus nqi siab dua, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov kev ntseeg siab, txawm hais tias nws tseem nyuaj rau kev ua haujlwm ntau dua {{5}L. 316L tsis txaus, tshwj xeeb tshaj yog nyob rau hauv kev tiv thaiv pitting corrosion thiab kev nyuaj siab corrosion cracking.
Puas yog 316L stainless hlau zoo?
316L stainless hlau yog ib lub siab - zoo alloy dav siv nyob rau hauv kev kho mob thiab Swiss watchmaking industries. Nws yog feem ntau siv rau hauv kev tsim cov cuab yeej phais, kev cog hniav, thiab cov cuab yeej kho mob. Nws tsis tshua muaj kev ua xua thiab corrosion kuj ua rau nws muaj kev nyab xeeb thiab txhim khu kev qha khoom.
316L steel yog dab tsi?
316L stainless hlau yog ib qho austenitic alloy, feem ntau hu ua "marine qib stainless hlau" vim tias nws tuaj yeem siv tau nyob rau hauv yuav luag 90% ntawm cov ntawv thov marine- suav nrog kev pom. Ntxiv rau cov hlau xws li hlau thiab npib tsib xee, 316L muaj 16-18% chromium thiab 2-3% molybdenum. Cov ntsiab lus no yog qhov tseem ceeb vim tias lawv txhim kho cov alloy qhov corrosion kuj; chromium reacts nrog oxygen hauv dej hiav txwv los tsim cov txheej txheem tiv thaiv chromium oxide, thaum molybdenum txhim kho cov hlau tsis kam rau pitting corrosion. Tsis tas li ntawd, 316L muaj cov ntsiab lus qis dua (li no "L" hauv lub npe), uas ua rau nws muaj zog dua corrosion kuj.
904L steel yog dab tsi?
Zoo li 316L, 904L stainless hlau kuj yog ib qho qis -carbon austenitic stainless hlau. Txawm li cas los xij, nws cov tshuaj muaj pes tsawg leeg muaj ntau dua ntawm chromium (19-23%) thiab molybdenum (4-5%), ua rau cov hlau no ntau dua corrosion-resistant dua 316L. Qee tus yuav paub txog 904L stainless hlau vim nws yog cov hlau feem ntau siv hauv kev tsim khoom ntawm Rolex watches, uas hais txog nws qhov zoo thiab ua haujlwm ntev. Cov txiaj ntsig zoo no ua rau nws yog cov khoom siv zoo tshaj plaws rau Rolex watches thiab muab nws qhov txiaj ntsig tseem ceeb hauv kev siv dej hiav txwv.
Chemical Composition ntawm Stainless Hlau 316L vs 904L
|
Element |
AISI 316L Stainless hlau (%) |
AISI 904L Stainless hlau (%) |
|
Fe |
Tshuav | Tshuav |
|
Cr |
16.0 – 18.0 | 19.0 – 23.0 |
|
Ni |
10.0 – 14.0 | 23.0 – 28.0 |
|
Mo |
2.0 – 3.0 | 4.0 – 5.0 |
|
Cu |
– | 1.0 – 2.0 |
|
C |
Tsawg dua lossis sib npaug li 0.03 | Tsawg dua lossis sib npaug li 0.02 |
|
Mn |
Tsawg dua lossis sib npaug li 2.00 | Tsawg dua lossis sib npaug li 2.00 |
|
Si |
Tsawg dua lossis sib npaug li 1.00 | Tsawg dua lossis sib npaug li 1.00 |
|
P |
Tsawg dua lossis sib npaug li 0.045 | Tsawg dua lossis sib npaug li 0.045 |
|
S |
Tsawg dua lossis sib npaug li 0.03 | Tsawg dua lossis sib npaug li 0.035 |
|
N |
Tsawg dua lossis sib npaug li 0.10 | Tsawg dua lossis sib npaug li 0.10 |
Kev sib piv ntawm Corrosion Resistance ntawm 904L thiab 316L Stainless Hlau
316L Stainless Hlau: Thaum 316L stainless hlau pom muaj zog corrosion kuj rau chlorides thiab dej hiav txwv, nws qhov kev ua tau zoo yuav qis dua rau 904L stainless hlau nyob rau hauv ib puag ncig corrosive heev xws li sulfuric lossis phosphoric acid.
904L Stainless Hlau: Piv rau 316L stainless hlau, 904L stainless hlau muaj kev tiv thaiv corrosion zoo tshaj, tshwj xeeb tshaj yog nyob rau hauv cov tshuaj lom neeg muaj zog heev. Yog li ntawd, 904L stainless hlau yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov uas muaj cov ntaub ntawv zoo heev xws li sulfuric acid.
Lub cev muaj zog ntawm Stainless Hlau 316L thiab 904L
|
316L Stainless hlau |
904L Stainless hlau |
|
|
Qhov ntom |
7,99g 3 | 8.00 g / cm3 |
|
Melting point |
1371-1400℃(2500-2552℃F) | 1350-1400℃(2462-2552℃F) |
|
Sib nqus |
Tsis yog-magnetic nyob rau hauv lub xeev annealed | Tsis yog-magnetic |
|
Thermal conductivity |
16.0 W / m · K (100 degree) | 12.6 W / m · K (100 degree) |
|
Thermal Expansion Coefficient |
16.0 μm / m · K (0-100 ° C) | 15.0 μm / m · K (0-100 ° C) |
|
Kev tiv thaiv |
0.074×10^-6Ω·m | 0.085×10^-6Ω·m |
|
Tshwj xeeb kub |
500 J/kg · K | 450 J/kg · K |
Qib sib npaug ntawm Stainless Hlau 316L thiab 904L
| Txheem / Lub Tebchaws | 316L (Standard Austenitic) Qib sib npaug | 904L (Super Austenitic) Qib sib npaug |
|---|---|---|
| UNS (Unified Numbering System) | S31603 | N08904 |
| ASTM / ASME Cov | ASTM A240 / A312 / A213 Hom 316L | ASTM A240 / A312 / A213 Hom 904L |
| EN / DIN (Tebchaws Europe / Lub Tebchaws Yelemees) | EN 1.4404 / X2CrNiMo17-12-2 | EN 1.4539 / X1NiCrMoCu25-20-5 |
| JIS (Nyiv) | SUS 316L | SWB 904L |
| GB (Tuam Tshoj) | 022Cr17Ni12Mo2 | 00Cr20Ni25Mo4.5Cu |
| BS (Lub Tebchaws Askiv) | 316S11 / 316S12 | 904S13 |
| ISO | 316L | 904L |
| AFNOR (Fabkis) | Z2CN17-12 | Z2NCDU25-20-5 |
| GOST (Russia) | 03Х17Н14М3 | 03Х22Н26М2Д2Т |
Kev sib piv ntawm Lub Zog thiab Kev Ua Haujlwm ntawm 904L thiab 316L Stainless Hlau
316L Stainless Hlau: 316L stainless hlau yog qhov muaj zog thiab ruaj khov, tab sis nyob rau hauv qhov xwm txheej hnyav, nws txoj kev ruaj khov feem ntau tsis zoo li 904L stainless hlau.
904L Stainless Hlau: Vim nws cov ntsiab lus siab nickel thiab molybdenum, 904L stainless hlau yog ntau ruaj thiab hnav- tiv taus, tshwj xeeb tshaj yog nyob rau hauv corrosive heev lossis siab - qhov kub thiab txias.
Yuav xaiv li cas
Rau me me / nruab nrab corrosive ib puag ncig (tsuas siv nyiaj): Xaiv 316L stainless hlau. Yog tias 316L kev ua tau zoo txaus rau koj cov kev xav tau thiab koj muaj peev nyiaj tsawg, nws yog qhov kev xaiv tsim nyog rau cov qauv siv.
Rau qhov hnyav / hnyav heev corrosive ib puag ncig (yuav tsum tau ua haujlwm siab): Xaiv 904L stainless hlau. 904L muab kev tiv thaiv tsim nyog thaum cuam tshuam nrog cov tshuaj corrosive (xws li cov kua qaub muaj zog) lossis hauv cov ntaub ntawv tseem ceeb hauv ntug dej hiav txwv / tshuaj lom neeg uas tsis tuaj yeem lees txais.
Cov ntsiab lus txiav txim siab tseem ceeb: Qhov corrosiveness ntawm koj ib puag ncig thiab koj cov peev nyiaj.
Gnee Steel tshwj xeeb hauv kev tsim khoom ntawm ntau yam khoom siv stainless hlau. Gnee Steel cov khoom ntim khoom suav nrog: Hlau Strapping: Cov kav dej nrog ib txoj kab uas hla ntawm 3 ntiv tes los yog tsawg dua yog feem ntau khi ua ke nrog polypropylene zaj duab xis los tiv thaiv xeb thaum thauj dej hiav txwv, thiab tom qab ntawd khi nrog cov hlua hlau. Ntoo Cases / Crates: Cov kav dej feem ntau yog ntim rau hauv cov rooj ntoo lossis cov thawv los tiv thaiv cov kav dej thaum lub sij hawm thauj mus los, tshwj xeeb tshaj yog cov uas ntev dua los yog muaj qhov loj dua. Seaworthy Export Ntim: Cov neeg muag khoom feem ntau siv cov txheej txheem seaworthy export ntim, uas tuaj yeem suav nrog ntau yam khoom siv thiab cov txheej txheem los tiv thaiv cov kav dej thaum thauj. Tarpaulin Ntim: Qhov no tiv thaiv los nag, dej hiav txwv, thiab lwm yam sab nraud los ntawm kev nkag mus rau lub thawv xa khoom thaum thauj. Gnee Steel tshwj xeeb hauv kev tsim thiab muag cov ntaub ntawv alloy. Gnee Steel cov khoom siv dav siv hauv aerospace, tshuaj, hluav taws xob, tsheb, thiab hluav taws xob nuclear, thiab peb tuaj yeem muab cov khoom siv alloy customized raws li cov neeg siv khoom xav tau. Rau cov khoom siv alloy pricing lossis customized alloy cov ntaub ntawv daws teeb meem, thov hu rau peb rau ib qho kev tsocai:ru@gneesteelgroup.com