Qhov txawv ntawm Qib 304 thiab 304L Stainless Hlau yog dab tsi?
304/304L stainless hlau muaj cov ntsiab lus chromium tsawg kawg yog 18% thiab cov ntsiab lus npib tsib xee tsawg kawg yog 8%. Qhov sib txawv ntawm ob yog cov ntsiab lus carbon . 304 stainless hlau muaj cov ntsiab lus siab tshaj plaws ntawm 0.07%, thaum 304L stainless hlau muaj cov ntsiab lus siab tshaj ntawm 0.030%. Qhov sib txawv ntawm cov ntsiab lus carbon no cuam tshuam rau cov hlau tsis muaj zog corrosion. 304/304L stainless hlau muaj nyob rau hauv ntau hom, nrog rau cov phaj, coils, puag ncig tuav, machined tiaj tuav, thiab kav, rau kev ua ntxiv.
Dab tsi yog "L" hauv 304L stainless hlau sawv cev?
Tsab ntawv "L" tom qab qib (piv txwv li, 304L) qhia tias cov ntsiab lus carbon tsuas yog txwv rau 0.03% lossis tsawg dua (feem ntau, cov ntsiab lus carbon tuaj yeem nce txog 0.08%, thiab qee qib tuaj yeem nce mus txog 0.15%).
Dab tsi yog 304 Stainless Hlau?
304 stainless hlau, tseem hu ua A2 los yog 18/8 stainless hlau, muaj 18% chromium thiab 8% npib tsib xee, thiab muaj corrosion kuj zoo, formability, thiab durability. Nws tsis tuaj yeem hardened los ntawm kev kho cua sov, yog li nws feem ntau yog siv rau hauv lub xeev annealed. Nws yog weldable thiab machinable, thiab feem ntau yog siv rau hauv kev tsim cov dab dej, cov khoom noj cia tank, cov cuab yeej phais, thiab cov pa tawm.
304L Stainless hlau yog dab tsi?
304L stainless hlau yog ib qho nyiaj - grey khoom alloy muaj li ntawm 70% hlau, 18% chromium, thiab 8% npib tsib xee. Lub "L" sawv cev rau "tsawg carbon," txhais tau tias nws cov ntsiab lus carbon yog 0.03%, qis dua 304. Qhov no tiv thaiv carbide buildup thaum vuam thiab txhim kho corrosion kuj. Nws ua haujlwm zoo hauv qhov chaw corrosive yam tsis muaj annealing. Cov khoom siv no tsuas yog siv hauv kev lag luam xws li kev tsim tshuaj lom neeg, khoom noj khoom haus thiab dej haus, thiab kev tsim kho.
Tshuaj muaj pes tsawg leeg ntawm 304 vs 304L (los ntawm Nyhav%)
| Element | 304 Stainless hlau | 304L Stainless hlau |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.08% | Tsawg dua lossis sib npaug li 0.03% |
| Chromium (Cr) | 18.0-20.0% | 18.0-20.0% |
| Nickel (Ni) | 8.0-10.5% | 8.0-12.0% |
| 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 0.75% | Tsawg dua lossis sib npaug li 0.75% |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.045% | Tsawg dua lossis sib npaug li 0.045% |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.030% | Tsawg dua lossis sib npaug li 0.030% |
| Nitrogen (N) | Tsawg dua lossis sib npaug li 0.10% | Tsawg dua lossis sib npaug li 0.10% |
| Molybdenum (hli) | Tsis muaj | Tsis muaj |
Corrosion Resistance
304 thiab 304L muaj yuav luag tib yam corrosion kuj nyob rau hauv feem ntau ib puag ncig. Txawm li cas los xij, 304L muaj cov ntsiab lus qis dua, yog li nws yog qhov zoo dua los tiv thaiv intergranular corrosion, tshwj xeeb tshaj yog tom qab vuam lossis cua sov.
Weldability
304L muaj weldability zoo dua li 304. Nws tsis tas yuav post-weld annealing, yog li txo qhov kev pheej hmoo ntawm corrosion nyob rau hauv weld cheeb tsam, thaum 304 tej zaum yuav xav tau post-weld annealing kom nws corrosion kuj.
Lub cev muaj zog ntawm 304 vs 304L
| Khoom | 304 Stainless hlau | 304L Stainless hlau |
| Qhov ntom | 8.0 g / cm³ | 8.0 g / cm³ |
| Melting Point | 1400℃- 1450 degree | 1400℃- 1450 degree |
| Thermal conductivity | 16.2 W / m·K ntawm 100 degree | 16.2 W / m·K ntawm 100 degree |
| Modulus ntawm Elasticity | 193 gp ua | 193 gp ua |
| Tensile zog | ~ 515 MPa | ~ 485 MPa |
Mechanical Properties ntawm 304 vs 304L
| Khoom | 304 Stainless hlau | 304L Stainless hlau |
| Tensile zog | 515 MPa ua | 485 MPa ua |
| Yield zog | 205 MPa | 170 MPa |
| Elongation ntawm Break | 40% | 40% |
| Hardness (Rockwell B) | 82 | 82 |
| Impact Toughness | Siab | Siab |
Qib sib npaug ntawm 304 thiab 304L
| Lub teb chaws/Standard | Specification | Qib (304) | Qib (304L) |
| Tebchaws Meskas | ASTM A240, ASTM A312 | 304 | 304L |
| Tuam Tshoj | GB/T 1220, GB/T 14975 | 0c18n 9 | 00Cr19Ni10 |
| Nyiv | JIS G4304, JIS G4305 | SUS 304 | SUS 304 L |
| Thoob ntiaj teb | TS EN ISO 15510 | X5CrNi18-10 | X2CrNi19-11 |
| Teb chaws Europe | TS EN 10088-2 | 1.4301 | 1.4307 |
Kev siv ntawm 304 thiab 304L Stainless Hlau
Thaum 304 thiab 304L stainless hlau muaj cov tshuaj zoo sib xws thiab lub cev, lawv daim ntawv thov sib txawv vim lawv cov ntsiab lus sib txawv. Cov kev sib txawv no cuam tshuam rau qhov zoo tshaj plaws ntawm daim ntawv thov rau txhua hom stainless hlau.
Kev siv ntawm 304 Stainless Hlau
Cov Txheej Txheem Txheej Txheem: Siv rau kev tsim cov ncej, txuas hniav, thiab thauj khoom-cov kabmob.
Automotive Parts: Feem ntau pom muaj nyob rau hauv cov pa tso pa tawm, cov khoom siv lub cav, thiab cov khoom txiav.
Cov Khoom Siv Muaj: Tsim nyog rau lub tank cia, cov kav dej, thiab cov tshuab raug rau ntau yam tshuaj.
Cov Khoom Siv Khoom Siv: Siv rau hauv chav ua noj dab dej, cookware, thiab khoom siv hauv tsev.
Cov Khoom Siv Kho Mob: Siv rau cov cuab yeej phais, cov cuab yeej kho hniav, thiab cov khoom siv hauv tsev kho mob.
Cov Khoom Siv Ua Khoom Noj: Siv rau kev khaws khoom noj, tuav, thiab ua cov khoom siv, xws li cov thawv ntim khoom, cov tais diav, thiab cov tshuab xa khoom.
Kev siv ntawm 304L Stainless Hlau
Welded Structures: Haum rau welded piping, cia tank, thiab tshav kub exchangers.
Kev Siv Tshuaj: Siv rau cov cuab yeej siv tshuaj corrosive, xws li reactors thiab cov tank sib tov.
Marine Environments: Tsim nyog rau kev tsim cov nkoj, cov chaw sab nrauv, thiab cov kav dej hauv qab.
Pharmaceutical Equipment: Siv nyob rau hauv cov khoom siv tshuaj ntau lawm uas yuav tsum tau purity siab heev.
Kev Ua Khoom Noj: Zoo tagnrho rau kev tuav cov khoom noj acidic thiab dej haus, xws li fermentation tanks thiab cov khoom noj khoom noj.
Kev siv ntau yam ntawm 304 thiab 304L:
Cov Khoom Siv Hauv Tsev: Siv rau cladding, handrails, thiab hniav facades.
Thaum tshav kub kub Exchangers: Siv nyob rau hauv lub tshuab hluav taws xob thiab HVAC.
Pressure Vessels: Siv rau boilers, gas cylinders, thiab industrial siab hlab ntsha.
Pipeline Systems: Siv nyob rau hauv cov chaw kho dej, refineries, thiab faib tshuab.
Khoom noj khoom haus thiab dej haus: Feem ntau pom muaj nyob rau hauv brewing, mis nyuj ua, thiab cov khoom ua noj.
Hauv cov ntsiab lus, 304 yog qhov zoo tshaj plaws rau siab - kev siv zog, xws li cov khoom siv, thaum 304L yog qhov zoo tshaj plaws rau vuam thiab corrosive ib puag ncig. Vim lawv cov khoom sib koom, ob qho tib si tau siv dav hauv kev tsim kho, kev ua zaub mov, thiab cov kav dej.
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