S355JR thiab S355J2 yog ob qib sib xws hauv European tus qauv (EN10025) siv los sawv cev rau qib sib txawv ntawm qib qis -carbon alloy structural steel. Cov qib no feem ntau yog siv los ua cov khoom siv hauv cov teb xws li kev tsim kho, txuas hniav, tsheb, thiab nkoj.
Qhov sib txawv tseem ceeb ntawm S355J2 thiab S355JR nyob rau hauv lawv cov kev cuam tshuam toughness. S355J2 muaj qhov cuam tshuam ntawm qhov hnyav dua lossis sib npaug ntawm 27J ntawm 20 degree, thaum S355JR muaj ntau dua lossis sib npaug rau 40J ntawm 20 degree. Qhov no txhais tau hais tias S355JR muaj kev cuam tshuam ntau dua thiab tswj kom muaj zog zoo dua ntawm qhov kub thiab txias, ua rau nws tsim nyog rau cov ntawv thov uas xav tau kev ua haujlwm siab dua steel.
Lwm cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab kev ua haujlwm ib puag ncig ntawm cov qauv hlau S355J2 thiab S355JR yog qhov zoo ib yam. Lawv ob leeg muaj qhov zoo weldability thiab machinability, haum rau ntau yam vuam txoj kev thiab cov txheej txheem ua. Tsis tas li ntawd, ob qho tib si steels muaj qhov zoo corrosion kuj thiab siab qaug zog lub zog, tswj kev ua haujlwm ruaj khov hauv ntau qhov chaw corrosive.
S355JR VS S355J2
| Khoom | S355J2 | S355 JR |
|---|---|---|
| Standard Reference | EN 10025-2: 2019 | EN 10025-2: 2019 |
| Hom khoom | Tsis yog - alloy structural steel | Tsis yog - alloy structural steel |
| Yam tsawg kawg nkaus Yield Strength | Ntau dua lossis sib npaug li 355 MPa (rau thickness Tsawg dua lossis sib npaug li 16 hli) | Ntau dua lossis sib npaug li 355 MPa (rau thickness Tsawg dua lossis sib npaug li 16 hli) |
| Impact toughness yuav tsum tau | Yam tsawg kawg nkaus lub zog27Jntawm-20 degree | Yam tsawg kawg nkaus lub zog27Jntawmchav tsev kub (20 degree) |
| Haum Kub Ib puag ncig | Tsawg- ib puag ncig kub (tsim nyog ntawm -20℃cuam tshuam) | Chav tsev kub ib puag ncig (tsim nyog ntawm chav tsev kub cuam tshuam) |
| Tej yam kev thov Scenarios | Cov khoom siv rau cov cheeb tsam txias, qhov chaw uas yuav tsum tau qis -kub toughness | Kev tsim vaj tsev dav dav, kev tsim khoom siv tshuab, thiab lwm yam rau chav tsev kub qhov xwm txheej |
Ob leeg S355J2 thiab S355JR square thiab plaub lub raj tuaj yeem hloov kho nrog kev kho cua sov thiab kev ua haujlwm raws li kev ua haujlwm tshwj xeeb thiab kev siv. Piv txwv li, cov txheej txheem kho cua sov uas tsim nyog tuaj yeem txhim kho lawv cov khoom siv kho tshuab thiab cuam tshuam rau lub zog, ua rau lawv ua tau zoo dua raws li qhov yuav tsum tau ua ntawm ntau yam qauv. Tsis tas li ntawd, ob hom hlau muaj cov yas zoo thiab ua haujlwm zoo, tso cai rau kev khoov, txiav, drilling, thiab lwm yam kev ua haujlwm, txhawb kev tsim kho thiab tsim khoom.
S355J2 thiab S355JR yog ob lub qauv hlau uas muaj cov khoom siv zoo heev thiab kev ua haujlwm zoo, thiab muaj kev thov dav dav.
S355JR Hollow Section tsum
