Dab tsi yog qhov txawv ntawm 304 thiab 316 stainless hlau?
Taw qhia:
Stainless hlau yog ib qho ntawm cov khoom siv dav tshaj plaws hauv ntau qhov kev lag luam vim nws cov corrosion kuj, durability, thiab kev zoo nkauj. Ntawm cov qib sib txawv ntawm stainless hlau, 304 thiab 316 feem ntau yog siv. Thaum ob qib muaj cov khoom zoo sib xws, muaj qhov sib txawv tseem ceeb uas ua rau lawv haum rau cov ntawv thov tshwj xeeb. Hauv tsab xov xwm no, peb yuav tshawb txog qhov sib txawv ntawm 304 thiab 316 stainless hlau, tshuaj xyuas lawv cov khoom muaj pes tsawg leeg, cov khoom siv kho tshuab, kev tiv thaiv corrosion, thiab kev siv.
Kev sib xyaw:
Ob leeg 304 thiab 316 stainless hlau yog austenitic alloys, uas txhais tau hais tias lawv tsis yog sib nqus thiab muaj lub ntsej muag-centered cubic crystal qauv. Txawm li cas los xij, lawv cov muaj pes tsawg leeg sib txawv, ua rau muaj kev hloov pauv hauv lawv cov khoom.
- 304 Stainless hlau:
304 stainless hlau muaj 18-20% chromium thiab 8-10.5% npib tsib xee, nrog rau me me ntawm carbon, manganese, phosphorus, thiab sulfur. Qhov no muaj pes tsawg leeg txhawb zoo heev corrosion kuj thiab weldability. Txawm li cas los xij, 304 stainless hlau muaj qhov cuam tshuam rau chloride-vim kev ntxhov siab corrosion tawg hauv qee qhov chaw.
- 316 Stainless hlau:
316 stainless hlau muaj 16-18% chromium, 10-14% npib tsib xee, thiab 2-3% molybdenum, ntxiv rau lwm cov khoom muaj nyob hauv 304 stainless hlau. Kev suav nrog molybdenum txhim kho cov hlau alloy's corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig chloride-nplua nuj. Yog li ntawd, 316 stainless hlau feem ntau hu ua "marine-qib stainless hlau" vim nws superior tiv thaiv corrosion nyob rau hauv marine ib puag ncig.
Mechanical Properties:
Cov khoom siv ntawm stainless hlau txiav txim siab nws qhov haum rau ntau yam kev siv. Cia peb sib piv cov khoom siv ntawm 304 thiab 316 stainless hlau:
- Tensile zog:
304 stainless hlau feem ntau muaj lub zog tensile ntawm ib ncig ntawm 515 megapascals (MPa) lossis 74,900 phaus ib square inch (psi). Ntawm qhov tod tes, 316 stainless hlau muaj lub zog tensile siab dua me ntsis, qhov nruab nrab ntawm 580 MPa lossis 84, 000 psi.
- Yield zog:
304 stainless hlau muaj lub zog tawm ntawm kwv yees li 205 MPa lossis 29,800 psi, thaum 316 stainless hlau nthuav tawm lub zog siab dua ntawm kwv yees li 205-240 MPa lossis 29, 800-34, 800 psi.
- Hardness:
Ob leeg 304 thiab 316 stainless hlau yog qhov muag muag piv rau lwm cov alloys. Lawv muaj qhov zoo sib xws Brinell hardness, nrog 304 stainless hlau ntsuas ib ncig ntawm 140 HB thiab 316 stainless hlau ntsuas kwv yees li 149 HB.
Corrosion Resistance:
Ib qho tseem ceeb tshaj plaws hauv kev xaiv stainless hlau yog nws cov corrosion kuj. Cia peb tshuaj xyuas qhov kev tiv thaiv corrosion ntawm 304 thiab 316 stainless hlau hauv ntau qhov chaw:
- General Corrosion Resistance:
Ob leeg 304 thiab 316 stainless hlau muaj kev tiv thaiv zoo heev rau corrosion nyob rau hauv feem ntau atmospheric, tshuaj, thiab dej tshiab ib puag ncig. Lawv cov ntsiab lus chromium tsim ib txheej oxide passive rau saum npoo, tiv thaiv cov khoom los ntawm corrosion.
- Chloride Corrosion Resistance:
316 stainless hlau ua tau zoo tshaj 304 stainless hlau nyob rau hauv ib puag ncig chloride nplua nuj. Qhov sib ntxiv ntawm molybdenum ho txhim kho cov hlau tsis kam rau pitting corrosion, ua rau nws tsim nyog rau kev siv nyob ze ntawm ntug dej hiav txwv lossis hauv kev sib cuag nrog cov tshuaj chloride.
Daim ntawv thov:
Thaum 304 thiab 316 stainless hlau sib koom ntau qhov sib xws, lawv cov yam ntxwv tshwj xeeb ua rau lawv haum rau kev siv sib txawv. Cia peb tshawb nrhiav lawv cov kev siv ntau:
- 304 Kev siv Stainless hlau:
304 stainless hlau yog dav siv nyob rau hauv ntau yam lag luam, xws li architecture, tsheb, khoom noj khoom haus, thiab chav ua noj. Nws cov kev tiv thaiv corrosion, siab kub lub zog, thiab zoo heev formability ua rau nws zoo tagnrho rau kev siv xws li cookware, dab dej, thiab architectural Cheebtsam.
- 316 Kev siv Stainless hlau:
Vim nws txoj kev tiv thaiv corrosion zoo tshaj, 316 stainless hlau pom kev siv dav hauv cov dej hiav txwv, kev ua tshuaj, thiab kev siv tshuaj kho mob. Nws yog feem ntau siv rau marine hardware, cov cuab yeej phais, cov cuab yeej siv tshuaj, thiab cov khoom siv hauv cov ntug dej hiav txwv.
Xaus:
Hauv kev xaus, thaum 304 thiab 316 stainless hlau sib koom cov khoom zoo sib xws, lawv cov muaj pes tsawg leeg, cov khoom siv kho tshuab, kev tiv thaiv corrosion, thiab kev siv sib txawv. Qhov sib ntxiv ntawm molybdenum nyob rau hauv 316 stainless hlau txhim khu nws corrosion kuj, ua rau nws haum rau chloride-nplua nuj ib puag ncig. Ntawm qhov tod tes, 304 stainless hlau yog tus nqi ntau dua thiab siv dav hauv ntau yam lag luam. Kev nkag siab txog qhov sib txawv ntawm cov qhab nia no tso cai rau cov tuam txhab thiab cov kws tsim khoom xaiv cov hlau tsis zoo uas tsim nyog tshaj plaws rau lawv cov kev siv tshwj xeeb, ua kom muaj kev ua tau zoo thiab ua haujlwm ntev.
