Dab tsi yog qhov specification ntawm SS400 yeeb nkab?
SS400 yog ib qho Japanese standard carbon structural steel yeeb nkab nrog lub zog tensile ntawm 400 MPa. Vim nws cov ntsiab lus carbon nruab nrab, nws muaj kev ua tau zoo tag nrho, nrog kev sib npaug zoo ntawm lub zog, plasticity, thiab weldability, ua rau nws siv ntau tshaj plaws hlau. SS400 steel phaj nws tus kheej muaj ntau yam khoom zoo heev, suav nrog lub zog siab, siab tawv, qaug zog ua haujlwm, cuam tshuam tsis kam, hnav tsis kam, corrosion kuj, weldability, thiab yooj yim ntawm kev ua.
Chemical Composition ntawm SS400 Steel
Cov tshuaj muaj pes tsawg leeg ntawm SS400 steel yeeb nkab feem ntau suav nrog cov ntsiab lus xws li carbon (C), silicon (Si), manganese (Mn), sulfur (S), thiab phosphorus (P). Cov ntsiab lus tshwj xeeb yog raws li hauv qab no:
Cov ntsiab lus carbon (C) feem ntau tsis tshaj 0.22%, thiab carbon yog qhov tseem ceeb cuam tshuam rau kev ua haujlwm ntawm cov phaj hlau.
Cov ntsiab lus silicon (Si) feem ntau tsis tshaj 0.35%.
Cov ntsiab lus ntawm manganese (Mn) yog kwv yees li ntawm 1.40% thiab 1.75%. Silicon thiab manganese tuaj yeem txhim kho lub zog thiab toughness ntawm steel phaj.
Sulfur (S) thiab phosphorus (P) yog impurity cov ntsiab lus, thiab lawv cov ntsiab lus yuav tsum tau tswj nyob rau hauv tej yam ntau yam. Feem ntau, cov ntsiab lus sulfur tsis pub tshaj 0.05%, thiab cov ntsiab lus phosphorus tsis tshaj 0.045% kom ntseeg tau tias kev ua haujlwm ntawm cov hlau phaj.
Mechanical Properties ntawm SS400
Cov khoom siv kho tshuab ntawm SS400 feem ntau yog tshwm sim hauv nws lub zog tawm los thiab lub zog tensile.
Yield zog ntsuas cov khoom muaj peev xwm tiv thaiv cov yas deformation nyob rau hauv sab nraud quab yuam. Rau SS400 steel, lub zog tawm los nws txawv nyob ntawm seb cov hlau thickness. Tshwj xeeb, thaum cov hlau tuab 'a' tsawg dua 16 hli, lub zog tawm los yuav tsum siab dua lossis sib npaug ntawm 245 MPa; Thaum cov hlau tuab yog nyob nruab nrab ntawm 16 hli thiab 40 hli, lub zog tawm los yuav tsum siab dua lossis sib npaug li 235 MPa; thiab thaum cov hlau tuab tshaj 40 hli, lub zog tawm los yuav tsum siab dua lossis sib npaug li 215 MPa.
Lub zog tensile qhia txog lub zog siab tshaj plaws uas cov khoom siv tuaj yeem tiv taus thaum lub sijhawm nro. Rau SS400 steel kav, lub zog tensile ntau yog feem ntau ntawm 400 thiab 510 MPa. Lub zog tensile siab dua qhia tau tias muaj peev xwm tiv thaiv tsis ua haujlwm nyob rau hauv lub zog tensile.
Tsis tas li ntawd, SS400 steel kav kuj pom zoo elongation thiab cuam tshuam lub zog. Elongation qhia tau hais tias cov khoom muaj peev xwm ua rau cov yas deformation nyob rau hauv tensile quab yuam, thaum lub zog cuam tshuam cuam tshuam cov khoom tsis kam rau cov khoom thauj. Cov kev ntsuas kev ua tau zoo ua ke ua kom ntseeg tau tias SS400 steel kav muaj kev ruaj ntseg zoo thiab kev ntseeg siab thaum raug rau qee qhov kev thauj khoom thiab kev cuam tshuam.
SS400 Tube Hoobkas
