Qhov sib txawv ntawm 316 & 308 Stainless Hlau
Qhov sib txawv ntawm 316 & 308 Stainless Hlau
Lub ntsiab sib txawv ntawm 316 thiab 308 stainless hlau yog 316 muaj molybdenum, muab nws superior corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv chloride / marine ib puag ncig; thaum 308 tsis muaj molybdenum thiab yog ib qho dav dav -lub hom phiaj austenitic stainless hlau, feem ntau siv rau vuam 304 stainless hlau. Nws muaj lub zog zoo tab sis tsis zoo rau pitting corrosion nyob rau hauv hnyav hnyav . 308 tuaj yeem suav hais tias yog "qhov tseem ceeb" hauv kev tsim khoom, thaum 316, vim qhov sib ntxiv ntawm molybdenum, yog qhov kev xaiv zoo tshaj plaws rau corrosive lossis marine ib puag ncig.
Puas yuav 308 stainless hlau xeb?
308 stainless hlau muaj corrosion kuj zoo vim nws siab chromium (Cr) thiab npib tsib xee (Ni) cov ntsiab lus. Nws tsim cov txheej txheem oxide passivating rau ntawm qhov chaw, yog li tiv thaiv xeb hauv feem ntau sab hauv tsev thiab sab nraum zoov ib puag ncig.
Dab tsi yog 308 Stainless Hlau?
308 stainless hlau yog austenitic stainless hlau tsim los ntawm chromium, npib tsib xee, thiab molybdenum, nthuav tawm zoo heev corrosion kuj. Piv nrog rau lwm yam stainless hlau alloys, nws muaj superior kub kuj thaum tuav lub zog siab. Nws cov khoom antimagnetic ua rau nws zoo tagnrho rau kev lag luam khoom noj lossis chaw kho mob. Tsis tas li ntawd, nws cov ntsiab lus carbon tsawg tiv thaiv carbide nag lossis daus thaum vuam, yog li txhim kho nws cov kev siv tau thiab ntev - lub sij hawm ua tau zoo hauv txhua daim ntawv thov.
Dab tsi yog 316 Stainless Hlau?
316 stainless hlau yog austenitic stainless hlau uas muaj chromium, nickel, thiab molybdenum. Nws zoo heev corrosion kuj, siab -kub tsis kam, thiab tsis kam mus rau kev nyuaj siab corrosion cracking ua rau nws zoo tagnrho rau kev lag luam siv xws li chemical cia tso tsheb hlau luam thiab kub exchangers. Nws siab - qhov kub thiab txias ua rau nws haum rau cov khoom siv kho mob lossis cov txheej txheem tsim khoom uas muaj qhov kub thiab txias.
Cov tshuaj muaj pes tsawg leeg ntawm 308 stainless hlau thiab 316 stainless hlau
| Element | 308 Stainless hlau (%) | 316 Stainless hlau (%) |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.08 | Tsawg dua lossis sib npaug li 0.08 |
| Chromium (Cr) | 19.0 – 21.5 |
16.0 – 18.0 |
| Hlau (Fe) | Tshuav | Tshuav |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 2.0 | Tsawg dua lossis sib npaug li 2.0 |
| Molybdenum (hli) | - | 2.0 – 3.0 |
| Nickel (Ni) | 10.0 – 12.0 | 10.0 – 14.0 |
| Nitrogen (N) | Tsawg dua lossis sib npaug li 0.10 | Tsawg dua lossis sib npaug li 0.10 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.045 | Tsawg dua lossis sib npaug li 0.045 |
| Silicon (Si) | Tsawg dua lossis sib npaug li 0.75 | Tsawg dua lossis sib npaug li 0.75 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.03 | Tsawg dua lossis sib npaug li 0.03 |
Mechanical Properties ntawm 308 thiab 316 Stainless Hlau
| Khoom | 308 Stainless hlau | 316 Stainless hlau |
| Tensile zog (MPa) | 550 – 750 | 515 – 690 |
| Yield zog (MPa) | ~210 – 250 | ~205 – 290 |
| Ductility thiab Toughness | Zoo heev | Zoo heev |
| Brinell Hardness (HB) | 160 – 200 | 150 – 217 |
| Fatigue zog (MPa) | ~240 | ~240 |
| Shear zog (MPa) | ~290 |
~300 |
| Elastic Modulus (GPa) | ~193 | ~193 |
| Elongation ntawm Break (%) | Ntau dua lossis sib npaug li 40 | Ntau dua lossis sib npaug li 40 |
| Poisson tus ratio | 0.30 | 0.30 |
| Kev txo qis hauv cheeb tsam (%) | Ntau dua lossis sib npaug li 55 | Ntau dua lossis sib npaug li 55 |
| Rockwell Hardness (HRB) | 80 – 90 | 79 – 95 |
| Shear Modulus (GPa) | ~77 | ~77 |
| Tensile zog: UTS (MPa) | 550 – 750 | 515 – 690 |
| Tensile zog: Yield (MPa) | ~210 – 250 | ~205 – 290 |
Kev sib piv ntawm thermal zog ntawm 308 stainless hlau thiab 316 stainless hlau
| Thermal khoom | 308 Stainless hlau | 316 Stainless hlau |
| Latent Kub ntawm Fusion (J / g) | ~260 | ~260 |
| Qhov kub siab tshaj plaws - Corrosion (degree) | ~870 | ~925 |
| Qhov kub siab tshaj plaws - Mechanical (degree) | ~870 | ~870 |
| Melting Point (Liquidus, degree) | 1400 – 1455 | 1370 – 1400 |
| Melting Point (Solidus, degree) | 1395 – 1440 | 1375 – 1400 |
| Thaum tshav kub kub tshwj xeeb (J / kg·K ntawm 20 degree) | ~500 | ~500 |
| Thermal conductivity (W / m · K ntawm 100 degree) | ~16.3 | ~16.2 |
| Thermal conductivity (W / m · K ntawm 500 degree) | ~21.5 | ~21.4 |
308 thiab 316 Stainless hlau: Qhov zoo thiab qhov tsis zoo
Qhov zoo ntawm 308 thiab 316 Stainless Hlau
Qhov zoo ntawm 308 Stainless Hlau:
* Zoo Corrosion Resistance: 308 stainless hlau muaj siab chromium thiab npib tsib xee cov ntsiab lus, ua tau zoo nyob rau hauv ntau qhov chaw, nrog rau me me corrosive thiab siab - daim ntawv thov kub.
* Cov Weldability zoo heev: 308 thiab nws qis -carbon variant, 308L, feem ntau yog siv los ua cov khoom siv weld vim tias lawv tiv taus vuam corrosion (intergranular corrosion).
* Mechanical Strength: Siab tensile lub zog thiab zoo toughness ua rau nws zoo tagnrho rau cov qauv siv.
Qhov zoo ntawm 316 Stainless Hlau:
* Superior Corrosion Resistance: Qhov sib ntxiv ntawm 2-3% molybdenum muab 316 stainless hlau zoo heev tiv thaiv chlorides, acids, thiab pitting corrosion, ua rau nws zoo tagnrho rau marine, tshuaj, thiab zaub mov noj.
* Siab -Tsub stability: tuav lub zog thiab corrosion kuj ntawm qhov kub thiab txias.
* Biocompatibility: Vim nws tsis yog -reactive thiab qis- allergenic zog, nws yog haum rau cov cuab yeej kho mob thiab phais.
Durability: Kev ua haujlwm zoo heev rau cov neeg kho tshuab thiab ib puag ncig kev ntxhov siab, suav nrog crevice corrosion thiab kev ntxhov siab corrosion tawg.
Hygiene: Ib qho yooj yim los ntxuav thiab tua kab mob, zoo tagnrho rau cov chav huv thiab huv si.
Qhov tsis zoo ntawm 308 thiab 316 Stainless Hlau
Disadvantages ntawm 308 Stainless hlau:
* Txwv chloride Resistance: Vim tsis muaj molybdenum, 308 yog qhov cuam tshuam rau pitting thiab crevice corrosion nyob rau hauv brine los yog chloride - nplua nuj ib puag ncig.
* Tsis haum rau cov tshuaj muaj zog corrosive: Nws cov tshuaj tiv thaiv corrosion txaus rau kev siv dav dav tab sis tsis txaus rau kev ua cov tshuaj corrosive.
* Kev pheej hmoo ntawm Weld Corrosion: Intergranular corrosion tuaj yeem tshwm sim hauv cov pob qij txha yog tias tsis siv cov pa roj carbon tsawg ({0}}carbon version (308L)).
* Kev ua haujlwm tsis zoo rau siab -Kev ntxhov siab ib puag ncig: Nws lub sijhawm ntev - kev ua haujlwm tsis zoo rau 316 stainless hlau nyob rau hauv siab - kev ntxhov siab, siab - av noo, lossis acidic ib puag ncig.
Disadvantages ntawm 316 Stainless hlau:
* Tus nqi siab dua: Vim qhov ntxiv molybdenum, nws cov kev ua tau zoo dua qub, ua rau 316 stainless hlau kim dua 308 stainless hlau.
Ntau dua Machining nyuaj: Vim nws muaj zog dua, 316 stainless hlau yog me ntsis nyuaj rau tshuab dua 308 stainless hlau, xav tau cov cuab yeej tshwj xeeb thiab kev paub txog CNC machining cog.
Tshaj-tsim Risk: Hauv qee cov ntawv thov, cov khoom txhawb nqa ntawm 316 stainless hlau yuav tsis tsim nyog, ua rau cov nqi nce tsis sib npaug rau cov txiaj ntsig.
Kev Siv Khoom: Txawm hais tias 316 stainless hlau muaj ntau yam kev siv, nws cov khoom yuav tsawg dua los yog pheej yig dua piv rau 308 stainless hlau.
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