S275JO thiab S275JR yog ob qho tib si cov qauv hlau uas tau teev tseg hauv European tus qauv EN 10025, tab sis lawv txawv ntawm cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab.
Ua ntej, hais txog cov khoom tsim, S275 qhia qhov tsawg kawg nkaus lub zog ntawm 275 MPa, thaum J thiab R xa mus rau cov qauv sib txawv toughness. Tshwj xeeb, S275JR qhia txog kev cuam tshuam ntawm chav tsev kub, feem ntau yuav tsum muaj qhov cuam tshuam tsawg kawg nkaus ntawm 27 J. S275JO, ntawm qhov tod tes, qhia txog kev cuam tshuam ntawm 0 degree, nrog rau qhov tsawg kawg nkaus lub zog xav tau ntawm 27 J. Yog li, S275JO nthuav tawm zoo dua toughness ntawm qis kub, ua rau nws tsim nyog rau daim ntaub ntawv.
Thib ob, vim muaj qhov sib txawv ntawm qhov yuav tsum tau ua kom muaj zog, ob lub hlau no tau siv sib txawv hauv kev siv tswv yim. S275JR yog qhov tsim nyog rau kev tsim vaj tsev dav dav thiab cov cuab yeej tsim khoom, thaum S275JO yog qhov tsim nyog rau cov ntawv thov uas xav tau qhov ntsuas kub qis dua, xws li cov kav dej cryogenic thiab cov khoom siv tub yees.
S275JO VS S275JR
| Khoom | S275J0 | S275 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 275 MPa (rau thickness Tsawg dua lossis sib npaug li 16 hli) | Ntau dua lossis sib npaug li 275 MPa (rau thickness Tsawg dua lossis sib npaug li 16 hli) |
| Impact toughness yuav tsum tau | Yam tsawg kawg nkaus lub zog27Jntawm0 degree | Yam tsawg kawg nkaus lub zog27Jntawmchav tsev kub (20 degree) |
| Haum Kub Ib puag ncig | Tsawg- qhov kub thiab txias (tsim nyog ntawm 0℃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 |
Hauv cov ntsiab lus, qhov sib txawv tseem ceeb nyob rau hauv qhov kev ntsuas qhov ntsuas kub thiab qhov xav tau toughness, ua rau muaj qhov sib txawv. Thaum xaiv hom hlau twg los siv, yuav tsum tau ua tib zoo xav txog cov kev xav tau ntawm qhov project thiab ib puag ncig.
S275JR Hollow Section Hoobkas
