316L vs . 904L Stainless hlau: Qhov txawv yog dab tsi?
316L vs . 904L Stainless hlau: Qhov txawv yog dab tsi?
316L yog ib qho dav dav - lub hom phiaj stainless hlau, thaum 904L yog siab - alloy premium stainless hlau. Vim nws cov nickel ntau dua, chromium, molybdenum, thiab tooj liab cov ntsiab lus, 904L muaj kev tiv thaiv corrosion ntau dua piv rau 316L, tshwj xeeb tshaj yog nyob rau hauv cov corrosive heev, acidic, los yog chloride - nplua nuj ib puag ncig. Qhov no ua rau nws tsim nyog rau kev thov kev lag luam, tab sis kuj kim dua. Rau kev siv txhua hnub xws li kev ua zaub mov, 316L tseem yog qhov kev xaiv ua tau zoo dua. Lub "L" nyob rau hauv ob lub npe sawv cev rau qis carbon cov ntsiab lus los txhim kho weldability, tab sis qhov optimized muaj pes tsawg leeg ntawm 904L (nickel siab dua, chromium, molybdenum, thiab tooj liab cov ntsiab lus) muab nws zoo dua rau pitting thiab crevice corrosion tshaj 316L.
Dab tsi yog "L" hauv 316L stainless hlau sawv cev?
Cov pa roj carbon tsawg. Qhov "L" tom kawg ntawm 300 series stainless hlau qib (piv txwv li, 316L) qhia tias "tsawg carbon". Cov ntsiab lus carbon (304 thiab 316 stainless hlau): kwv yees li 0.08%; Cov ntsiab lus carbon (L- qib stainless hlau): kwv yees li 0.03%.
Dab tsi yog 316L stainless hlau?
316L stainless hlau yog austenitic stainless hlau alloy, muaj nuj nqis heev rau nws zoo heev corrosion kuj thiab weldability. Lub "L" sawv cev rau "tsawg carbon," uas pab txo qis kev sib txhuam thaum lub sij hawm vuam. Nws cov khoom tseem ceeb muaj xws li hlau, chromium, npib tsib xee, thiab molybdenum, sib txuas lub zog, formability, thiab corrosion kuj.
Dab tsi yog 904L stainless hlau?
904L stainless hlau (los yog SS 904L) yog siab -alloy austenitic stainless hlau, renowned rau nws tshwj xeeb corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv heev corrosive ib puag ncig. Cov khoom tseem ceeb ntawm 904L stainless hlau yog hlau, npib tsib xee, chromium, molybdenum, thiab ib qho me me ntawm tooj liab, uas txhim kho nws cov tshuaj tiv thaiv xws li sulfuric acid, chlorides, thiab phosphoric acid.
Kev sib piv ntawm cov tshuaj muaj pes tsawg leeg ntawm 316L thiab 904L
| Element | 316L | 904L |
|---|---|---|
| Chromium (Cr) | 16–18% | 19–23% |
| Nickel (Ni) | 10–14% | 23–28% |
| Molybdenum (hli) | 2–3% | 4–5% |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.03% | Tsawg dua lossis sib npaug li 0.02% |
| Copper (Cu) | - | 1–2% |
| Nitrogen | me me | me me |
| Hlau | Tshuav | Tshuav |
Kev sib piv ntawm Corrosion Resistance ntawm 316L thiab 904L
| Hom Corrosion | 316L | 904L |
|---|---|---|
| General Corrosion | Zoo heev | Zoo heev |
| Pitting (chlorides, dej hiav txwv) | Zoo heev | Superior |
| Crevice Corrosion | Siab tsis kam | Ntau dua kuj |
| Sulfuric Acid | pluag | Zoo tshaj - hauv - chav kawm (tooj liab pab) |
| Acetic / organic acids | Zoo | Zoo heev |
| Siab -chloride ib puag ncig | Muaj zog | Heev |
Kev sib piv ntawm cov khoom siv kho tshuab ntawm 316L thiab 904L
| Khoom | 316L | 904L |
|---|---|---|
| Tensile zog | ~ 485 MPa | ~ 490 MPa |
| Yield zog | ~ 170 MPa | ~ 220 MPa |
| Hardness | Zoo sib xws | Siab dua me ntsis |
| Ductility | Zoo heev | Siab heev |
| Toughness | Zoo heev | Zoo heev |
Kev sib piv ntawm Weldability thiab Machining Performance ntawm 316L thiab 904L
316L
Weldability zoo heev
Tsis xav tau preheating
Tsis muaj kev tshaj tawm -weld kev kho cua sov yuav tsum tau
ruaj khov corrosion kuj tom qab vuam
904L
Weldable, tab sis yuav tsum tau welding kev txawj ntse
Cov ntsiab lus alloy siab ua rau muaj kev pheej hmoo ntawm kub tawg
Feem ntau yuav tsum tau tswj los ntawm kev paub welders
Tom qab-welding tu yog qhov tseem ceeb rau kev tswj xyuas corrosion
Thaum tshav kub kub Resistance piv ntawm 316L thiab 904L
| Qhov xwm txheej | 316L | 904L |
|---|---|---|
| Kev pabcuam txuas ntxiv | Mus txog 870 degree | Mus txog 1090 degree |
| Kev ruaj ntseg | Zoo heev | Zoo heev |
| Scaling Resistance | Zoo | Superior |
Daim ntawv thov rau 316L thiab 904L
Kev siv zoo tshaj plaws rau 316L Stainless Hlau
Marine Cheebtsam
Kub exchangers
Cov khoom siv ua zaub mov
Chemical cia tanks thiab pipelines
Cov cuab yeej siv tshuaj
Cov khoom siv kho mob
Cov khoom siv hauv tsev
316L yog cov khoom siv thoob plaws ntiaj teb rau cov ntawv thov uas xav tau kev tiv thaiv siab heev, cov qauv kev nyiam huv, thiab kev siv dej hiav txwv.
Qhov zoo tshaj plaws siv rau 904L Stainless hlau
Siab -chloride ib puag ncig
Muaj zog acid ib puag ncig (tshwj xeeb yog sulfuric acid)
Seawater desalination nroj tsuag
High- khoom siv
Khoom kim heev watches / precision qhov chaw
Petrochemical pipelines
Fertilizer nroj tsuag
Organic acid ib puag ncig
904L tsis tsuas yog muaj cov khoom siv tshuaj muaj zog, tab sis kuj tsim nyog rau cov ntawv thov uas xav tau siab heev rau cov tsos, xws li siab - khoom kawg.
Tus nqi sib piv ntawm 316L thiab 904L
| Qhov xwm txheej | 316L | 904L |
|---|---|---|
| Tus nqi raw khoom | Nruab nrab | Siab |
| Cov ntsiab lus Nickel | 10–14% | 23–28% |
| Machining Nqi | Ib txwm | Siab dua |
| Vuam Nqi | qis | Siab dua |
| Ntiaj teb no muaj nyob | Siab heev | Nruab nrab |
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