Rau cov lus nug no, peb yuav tsum tau kos pib pib lub hauv paus chiv keeb Ef10025 - 2 tus qauv rau cov hlau tsis-alloy. Lub S275 tsis yog qib steel, nws yog lub npe Genaral rau S275JR hlau, S275J2 hlau thiabS275J0 Hlau.
S275JR STEEL tsuas yog ib qho ntawm S275 hlau. Yog li thov tsis txhob sib xyaw S275 thiab S275JR steel.
S275 thiab S275JR Hlau Tshuaj Lom Neeg Tshuaj Ntau {{2} Nyob:
| Qib hlau | С | Mn | S | P | N | Сu | |
| S275 | JR | <=0.22 | <=1.50 | 0.035 | 0.035 | <=0.012 | <=0.55 |
| J0 | <=0.18 | <=1.50 | 0.03 | 0.03 | <=0.012 | <=0.55 | |
| J2 | <=0.18 | <=1.50 | 0.025 | 0.025 | - | <=0.55 | |
S275 thiab S275JR Hlau Neeg Kho Tshuab:
| Teem nqi | Min. Paib lub zog (t tsawg dua los yog sib npaug rau 16 hli) |
Lub zog tensile (t tsawg dua lossis sib npaug rau 400mm) |
Elongation a (3 hli tsawg dua lossis sib npaug rau t tsawg dua lossis sib npaug rau 40mm) min |
Kub / Qib | Kev Cuam Tshuam Lub Zog (Ntev) / j min |
|
| S275 | JR | 275 mpa | 380-580 MPA | 15% | 20 | 27 |
| J0 | 275 mpa | 380-580 MPA | 15% | 0 | 27 | |
| J2 | 275 mpa | 380-580 MPA | 13% | -20 | 27 | |
Thaum peb tau hais rau S275 xav tau. Ua ntej, peb yuav tsum tau lees paub tias S275JR hlau,S275J2 Hlaulossis S275J0 yog xav tau. Lub ntsiab sib txawv ntawm peb s275 steel lus dag nyob rau hauv lawv qhov kev cuam tshuam kub: 20℃ntawm S275J2 hlau thiab 0℃ntawm S275J0 hlau.
