Dab tsi yog qhov txawv ntawm 303 stainless hlau thiab 304 stainless hlau?
Dab tsi yog qhov txawv ntawm 303 stainless hlau thiab 304 stainless hlau?
Qhov sib txawv tseem ceeb nyob rau hauv qhov tseeb tias 303 stainless hlau muaj leej faj los txhim kho nws cov machinability, thaum 304 stainless hlau muaj ntau dua corrosion kuj thiab zoo weldability. Qhov no txhais tau hais tias 303 stainless hlau yog qhov zoo tagnrho rau cov khoom uas yuav tsum tau siv dav hauv machining, xws li cov ntsia hlau thiab bolts, tab sis 304 stainless hlau yog qhov kev xaiv zoo dua rau corrosive ib puag ncig lossis cov ntawv thov uas xav tau vuam.
Dab tsi yog qhov tsis zoo ntawm 304 stainless hlau?
304 stainless hlau muaj ib qho tsis zoo -nws yog qhov raug rau corrosion los ntawm cov tshuaj chloride los yog cov dej ntsev (xws li ze ntawm hiav txwv). Chloride ions tuaj yeem tsim cov ntsiab lus corrosion hauv thaj chaw hauv cheeb tsam, hu ua "pitting corrosion," uas tuaj yeem kis tau hauv qab chromium tiv thaiv txheej, yog li ua rau cov qauv sab hauv.
Dab tsi yog 303 Stainless Hlau?
303 stainless hlau yog austenitic stainless hlau ua los ntawm kev ntxiv sulfur thiab phosphorus rau 304 stainless hlau. Qhov sib ntxiv ntawm cov ntsiab lus no txo cov nplaum, muab 303 stainless hlau zoo heev machinability thiab txiav kev ua tau zoo. Nws kuj muaj cov khoom zoo los tiv thaiv -stick, nrog tsawg adhesion los ntawm kev sib txhuam. Thaum 303 stainless hlau nws tus kheej tsis yog-sib nqus, kev hloov pauv hauv nws cov qauv siv lead ua thaum ua haujlwm tuaj yeem ua rau nws pom cov hlau nplaum.
Dab tsi yog 304 Stainless Hlau?
304 stainless hlau yog siv dav siv stainless hlau, muaj npe nrov rau nws zoo heev corrosion kuj thiab versatility. Nws muaj 18% chromium thiab 8% npib tsib xee, tsim cov hlau zoo nrog cov kav ntev thiab oxidation tsis kam. Chromium pab tsim cov txheej txheem oxide passivating rau ntawm qhov chaw, tiv thaiv corrosion thiab ncua kev pab cuam lub neej. Vim nws tsis yog - hlau nplaum, 304 stainless hlau yog dav siv nyob rau hauv ntau yam lag luam, nrog rau cov khoom siv hauv chav ua noj, cov khoom siv hauv tsev, thiab cov khoom siv hauv kev lag luam. 304 stainless hlau muaj cov khoom siv zoo heev, xws li lub zog tensile thiab toughness, ua rau nws zoo tagnrho rau cov ntawv thov uas yuav tsum tau muaj zog thiab corrosion kuj. Qhov no alloy yog tshwj xeeb tshaj yog ib qho tseem ceeb nyob rau hauv ib puag ncig raug rau corrosive hais.
Kev sib piv tshuaj lom neeg: Stainless hlau 303 vs 304
| Element | 303 Stainless hlau (%) | 304 Stainless hlau (%) |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua los yog sib npaug li 0.15 | Tsawg dua lossis sib npaug li 0.08 |
| Chromium (Cr) | 17.0 - 19.0 | 18.0 - 20.0 |
| Nickel (Ni) | 8.0 - 10.0 | 8.0 - 10.5 |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 2.00 | Tsawg dua lossis sib npaug li 2.00 |
| Silicon (Si) | Tsawg dua lossis sib npaug li 1.00 | Tsawg dua lossis sib npaug li 0.75 |
| Phosphorus (P) | Tsawg dua los yog sib npaug li 0.20 | Tsawg dua lossis sib npaug li 0.045 |
| Sulfur (S) | Ntau dua lossis sib npaug rau 0.15 (min) | Tsawg dua lossis sib npaug li 0.03 |
| Hlau (Fe) | Tshuav | Tshuav |
| Lwm Yam Khoom | - | - |
Kev sib piv Corrosion Resistance: Stainless hlau 303 vs 304
| Corrosion Hom / Ib puag ncig | 303 Stainless hlau | 304 Stainless hlau |
|---|---|---|
| General Corrosion | Zoo | Zoo heev |
| Intergranular Corrosion | Tsis zoo (sensitization prone) | Zoo (tsawg carbon version 304L muaj) |
| Pitting Corrosion | Ncaj ncees | Zoo |
| Crevice Corrosion | Ncaj ncees | Zoo |
| Kev nyuaj siab Corrosion Cracking | Ncaj ncees | Zoo |
| Atmospheric Corrosion | Zoo | Zoo heev |
| Dej ntshiab | Zoo | Zoo heev |
| Dej hiav txwv | Phem rau Fair | Ncaj ncees rau Zoo |
| Organic Acids | Zoo | Zoo heev |
| Inorganic Acids | Phem rau Fair | Ncaj ncees rau Zoo |
| Alkaline Solutions | Zoo | Zoo heev |
| Kev daws ntsev | Ncaj ncees | Zoo |
| Oxidizing Ib puag ncig | Ncaj ncees | Zoo |
| Txo ib puag ncig | pluag | Ncaj ncees |
| Weldability | Tsis pom zoo | Zoo heev |
Kev siv ntawm 303 thiab 304 Stainless Hlau
303 Stainless hlau
303 stainless hlau feem ntau yog siv rau hauv cov khoom lag luam xws li bolts, txiv ntseej, thiab shafts, thiab tseem nyob rau hauv cov khoom siv tshuab. Cov khoom no feem ntau yog muab rau hauv daim ntawv puag ncig thiab tuaj yeem ua rau ntau yam duab.
304 Stainless hlau
Vim nws cov corrosion kuj zoo dua piv rau 303 stainless hlau, 304 stainless hlau yog siv rau sab nrauv panels ntawm tsheb ciav hlau. Nws kuj tseem siv tau rau hauv cov ntawv thov uas xav tau qhov zoo nkauj zoo nkauj, xws li lub qhov rooj tsis siv neeg, escalators, kab, thiab tes tuav. Cov ntawv thov ntawm 304 stainless hlau yog dav heev, suav nrog cov khoom lag luam xws li txiv ntoo thiab bolts, cov khoom siv cog xws li liquefied natural gas cia tanks thiab nuclear chaw, thiab kev kho mob, tshuaj, thiab khoom tsim khoom noj.
Kev sib piv ntawm Stainless Hlau 303 thiab 304
| Feature | 303 Stainless hlau | 304 Stainless hlau |
|---|---|---|
| Cov txiaj ntsig tseem ceeb | Superior machinability | Superior corrosion kuj thiab weldability |
| Ntsiab Ntxiv | Sulfur (los yog selenium) | Siab chromium (18-20%) thiab nickel (8-10.5%) cov ntsiab lus |
| Corrosion Resistance | Ncaj ncees; qis dua 304 vim yog ntxiv sulfur | Zoo heev; superior tsis kam rau pitting corrosion |
| Weldability | pluag; Nws yooj yim rau tawg vim yog cais cov ntsiab lus los ntawm leej faj | Zoo heev; Cov ntsiab lus carbon tsawg ua rau nws zoo tagnrho rau vuam |
| Machineability | Zoo heev; sulfur txo cov nplaum | Zoo; tsawg tsim nyog rau kev siv tshuab dav dav piv rau 303 |
| Siv dav | Screws, bolts, gears, shafts, thiab lwm yam khoom siv tshuab ntsia hlau | Cov khoom siv ua zaub mov, tso tsheb hlau luam, thiab lwm yam kev siv uas xav tau kev tiv thaiv corrosion |
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