316L vs . 904L Stainless Hlau: Qhov txawv yog dab tsi?
316L vs . 904L Stainless Hlau: Qhov txawv yog dab tsi?
Qhov sib txawv tseem ceeb ntawm 316L thiab 904L stainless hlau nyob rau hauv lawv cov muaj pes tsawg leeg. 904L stainless hlau muaj ntau dua cov nickel, chromium, thiab molybdenum, thiab kuj muaj xws li tooj liab, uas ua rau superior corrosion kuj, tshwj xeeb tshaj yog tiv thaiv chloride corrosion. Qhov no ua rau nws tsim nyog rau qhov hnyav marine lossis tshuaj lom neeg ib puag ncig, tab sis nws kuj tseem kim dua thiab nyuaj rau txheej txheem ntau dua li siv ntau dua 316L stainless hlau.
904L stainless hlau tiv thaiv corrosion li cas?
Nws cov ntsiab lus tooj liab siab txhim kho nws txoj kev tiv thaiv kom muaj zog txo cov kua qaub (tshwj xeeb tshaj yog sulfuric acid, phosphoric acid, acetic acid, thiab lwm yam organic acids), thaum lub siab nickel thiab molybdenum cov ntsiab lus muab kev tiv thaiv zoo heev rau chloride-induced stress corrosion cracking thiab pitting corrosion.
Dab tsi yog 316L stainless hlau?
316L stainless hlau yog ib qho austenitic stainless hlau alloy uas muaj nuj nqis rau nws zoo heev corrosion kuj thiab weldability. Lub "L" hauv "316L" sawv cev rau "tsawg carbon," uas pab txo qis kev sib txhuam ntawm kev sib tsoo thaum vuam. Nws cov khoom tseem ceeb suav nrog hlau, chromium, npib tsib xee, thiab molybdenum, uas muab kev sib xyaw ua ke ntawm 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 paub rau nws superior corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig corrosive heev. Lub ntsiab Cheebtsam ntawm 904L stainless hlau yog hlau, npib tsib xee, chromium, molybdenum, thiab ib tug me me tooj ntawm tooj liab, uas ua rau nws tsis kam mus rau cov tshuaj xws li sulfuric acid, chlorides, thiab phosphoric acid.
Chemical Composition ntawm 904L vs 316L Stainless hlau
| Element | 316L (%) | 904L (%) | Muaj nuj nqi hauv Stainless Hlau |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.03 | Tsawg dua lossis sib npaug li 0.02 | Txo kev pheej hmoo ntawm intergranular corrosion; txhim kho weldability los ntawm minimizing carbide nag lossis daus. |
| Chromium (Cr) | 16.0 – 18.0 | 19.0 – 23.0 | Muab kev tiv thaiv corrosion thiab oxidation los ntawm kev tsim cov yeeb yaj kiab ruaj khov ntawm cov hlau nto. |
| Nickel (Ni) | 10.0 – 14.0 | 23.0 – 28.0 | Stabilizes cov qauv austenitic; txhim kho ductility, toughness, thiab tsis kam rau kev ntxhov siab corrosion cracking. |
| Molybdenum (hli) | 2.0 – 3.0 | 4.0 – 5.0 | Txhim khu kev tiv thaiv rau pitting thiab crevice corrosion, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig chloride. |
| Manganese (Mn) | Tsawg dua los yog sib npaug rau 2.0 | Tsawg dua los yog sib npaug rau 2.0 | Ua raws li deoxidizer; txhim kho qhov kub- ua hauj lwm thiab ua hauj lwm rau scaling. |
| Silicon (Si) | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua los yog sib npaug rau 1.0 | Txhim kho oxidation tsis kam; kuj tseem siv los ua deoxidizer hauv cov txheej txheem melting. |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.045 | Tsawg dua lossis sib npaug li 0.045 | Khaws qis kom tsis txhob embrittlement thiab tswj ductility. |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.03 | Tsawg dua lossis sib npaug li 0.035 | Txhim kho machinability hauv me me; Tshaj tuaj yeem txo qhov toughness thiab corrosion kuj. |
| Copper (Cu) | Tsawg dua los yog sib npaug li 0.5 | 1.0 – 2.0 | Ua kom tiv thaiv kom tsis txhob muaj cov kua qaub, tshwj xeeb tshaj yog sulfuric acid; txhim kho corrosion kuj nyob rau hauv hnyav tshuaj ib puag ncig. |
| Nitrogen (N) | Tsawg dua lossis sib npaug li 0.10 | Tsawg dua lossis sib npaug li 0.10 | Txhim kho cov qauv austenitic thiab txhim kho pitting kuj thiab tensile lub zog. |
| Hlau (Fe) | Tshuav | Tshuav | Lub hauv paus hlau ntawm stainless hlau, pab txhawb lub zog thiab sib nqus zog. |
Mechanical thiab Physical Properties ntawm 904L vs 316L Stainless hlau
| Khoom | 316L Stainless hlau | 904L Stainless hlau | Lus hais |
| Tensile zog (MPa) | 485 – 620 | 490 – 740 | 904L muaj siab dua - kawg lub zog, muaj txiaj ntsig zoo rau cov qauv siv. |
| Tawm Zog (0.2% Offset, MPa) | Ntau dua lossis sib npaug rau 170 - 310 | Ntau dua lossis sib npaug rau 220 - 290 | 904L muaj zog yield zog me ntsis, nrog zoo ductility khaws cia. |
| Elongation (% hauv 50 mm) | Ntau dua lossis sib npaug li 40 | Ntau dua lossis sib npaug li 35 | 316L yog me ntsis ductile; zoo dua rau qhov txias txias. |
| Hardness (Brinell HBW) | Tsawg dua lossis sib npaug li 217 | Tsawg dua los yog sib npaug li 220 | Cov qib hardness zoo sib xws; ob leeg yog tsim rau machining thiab fabrication. |
| Qhov ceev (g / cm³) | 7.99 | 8.05 | 904L yog me ntsis denser vim cov ntsiab lus alloying ntau dua. |
| Modulus ntawm Elasticity (GPa) | ~193 | ~195 | Yuav luag zoo ib yam; txiav txim siab nruj nyob rau hauv load. |
| Thermal conductivity (W / m · K) | 16.3 | 12.5 | 316L muaj thermal conductivity zoo dua; tseem ceeb nyob rau hauv tshav kub exchangers. |
| Lub peev xwm kub tshwj xeeb (J / kg·K) | 500 | 450 | 316L khaws cov cua sov me ntsis zoo dua. |
| Coefficient ntawm Thermal Expansion (μm / m· degree) | 16.0 × 10⁻⁶ | 15.0 × 10⁻⁶ | 904L muaj qis thermal expansion; zoo dua dimensional stability ntawm siab temps. |
| Hluav taws xob tiv thaiv (µΩ·cm) | ~74 | ~94 | 904L muaj kev tiv thaiv ntau dua; muaj feem xyuam rau hluav taws xob thiab EMI-sensitive siv. |
| Sib nqus permeability (μr) | ~1.02 (tsis yog-magnetic nyob rau hauv annealed mob) | Tsis yog -magnetic (μr ≈ 1.0) | 904L yog tag nrho tsis yog-magnetic; muaj txiaj ntsig zoo hauv cov khoom siv rhiab. |
Corrosion Resistance Sib piv ntawm 904L thiab 316L Stainless Hlau
316L Stainless hlau:Thaum 316L stainless hlau 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 cov uas muaj sulfuric lossis phosphoric acid).
904L Stainless hlau: Piv rau 316L stainless hlau, 904L stainless hlau nthuav tawm superior corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig corrosive tshuaj lom neeg. Yog li, 904L stainless hlau yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov tuav cov ntaub ntawv zoo heev xws li sulfuric acid.
Lub zog thiab Durability Sib piv ntawm 904L thiab 316L Stainless Hlau
316L Stainless hlau:316L stainless hlau muaj zog thiab ruaj khov, tab sis feem ntau tsis muaj zog lossis ruaj khov li 904L stainless hlau nyob rau hauv huab cua txias.
904L Stainless hlau:Vim nws cov ntsiab lus npib tsib xee thiab molybdenum siab, 904L stainless hlau yog qhov ruaj khov dua thiab hnav-tiv taus, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias heev.
Kev sib piv ntawm daim ntawv thov rau 904L thiab 316L Stainless hlau
316L Stainless hlau:Haum rau cov ntawv thov nyob rau hauv marine ib puag ncig, kev ua zaub mov, khoom siv kho mob, thiab kev ua tshuaj lom neeg, qhov chaw corrosive ib puag ncig yog nruj heev.
904L Stainless hlau:Qhov zoo tshaj plaws rau qhov chaw muaj corrosive heev, xws li cov uas pom nyob rau hauv cov tshuaj ua, tshuaj, roj thiab roj, thiab offshore drilling ua hauj lwm.
Gnee Steel tshwj xeeb hauv kev tsim khoom ntawm ntau yam khoom siv hlau stainless. 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