Dab tsi yog qhov txawv ntawm SS 309 thiab 304 stainless hlau?
Tso lus
Chemical composition:
304 stainless hlau: feem ntau yog tsim los ntawm chromium thiab npib tsib xee, tsis muaj molybdenum, chromium ntsiab lus ntawm 18% -20%, npib tsib xee ntsiab lus ntawm 8% -10.5%.
309 stainless hlau: chromium thiab npib tsib xee cov ntsiab lus siab dua 304, thiab muaj me me ntawm molybdenum, uas ua rau nws cov khoom tshwj xeeb.
Corrosion kuj:
304 stainless hlau: ua tau zoo nyob rau hauv ib puag ncig, tab sis corrosion kuj yuav txo tau nyob rau hauv chloride ion los yog acidic ib puag ncig.
309 stainless hlau: muaj corrosion kuj zoo heev, tshwj xeeb tshaj yog haum rau kub thiab siab corrosion ib puag ncig.
High kub kev ua haujlwm:
304 stainless hlau: haum rau qhov kub thiab txias ib puag ncig, tab sis qhov kub thiab txias kev ua haujlwm yog qhov txwv.
309 stainless hlau: feem ntau yog siv nyob rau hauv high kub daim ntawv thov scenarios, xws li tshuaj lom neeg kev lag luam, hluav taws xob fais fab thiab lwm yam liaj teb, muaj peev xwm tuav ruaj khov kev kawm thiab lub zog ntawm kub kub.
Daim ntawv thov teb:
304 yog siv dav hauv kev tsim kho, rooj tog zaum thiab lwm qhov chaw; 309 feem ntau yog siv rau hauv cov khoom siv kub, cov khoom siv hluav taws xob thiab lwm yam kev lag luam uas yuav tsum tau muaj kev kub ntxhov.
| Yam | SIB 304 | SIB 309 |
|---|---|---|
| Tshuaj muaj pes tsawg leeg | - Cr: 18%-20% - Ni: 8%-10.5% - C: Tsawg dua lossis sib npaug rau 0.08% - Mo: Tsis muaj |
- Cr: Siab dua 304 - Ni: Siab dua 304 - C: Tsawg dua lossis sib npaug rau {{0}}.18% (lossis Tsawg dua lossis sib npaug rau 0.08% hauv qee kis) - Mo: Me me |
| Mechanical Properties | - Tensile zog: Ntau dua lossis sib npaug li 520 MPa - Yield zog: Ntau dua lossis sib npaug li 205 MPa - Elongation: Ntau dua lossis sib npaug li 40% |
- Tensile zog≈520 MPa - Yield zog≈205 MPa - Elongation: ≈40% - Ntau lub zog ntawm qhov kub thiab txias |
