EN S355J2 H- kab teeb yog tsim tshwj xeeb rau cov huab cua txias (tsawg dua lossis sib npaug rau -20 degree), ua rau lawv zoo tagnrho hloov rau GB Q355D H- kab teeb hauv thaj tsam xws li Heilongjiang, Inner Mongolia, thiab sab qaum teb Xinjiang{{7}'} nrog cov khoom Ultra-txias yuav tsum:
EN S355J2 vs GB Q355D Cov Cai
| Specification | EN S355J2 (EN 10025-2) | GB Q355D (GB/T 1591) | Qhov zoo rau thaj tsam txias |
|---|---|---|---|
| Kev ntsuas kub | -20 degree | -40 degree | S355J2 qhov ntsuas kub siab dua yog offset los ntawm nws lub zog cuam tshuam ntau dua (27 J vs. Q355D's 34 J-saib hauv qab). |
| Yam tsawg kawg nkaus zog | 27 J (Charpy V-notch) | 34 J (Charpy V-notch) | S355J2's 27 J ntawm -20℃yog sib npaug rau Q355D's 34 J ntawm -40 degree, raws li kev cuam tshuam lub zog txo nrog qhov kub thiab txias. Kev ntsuas kev lag luam qhia S355J2 khaws cia ~ 20 J ntawm -40℃- txaus rau feem ntau cov ntawv thov hauv cheeb tsam txias. |
| Kev hloov kho tshuaj | Nickel (0.5-1.0%, opt), niobium (0.01-0.08%, xaiv) | Nickel (0.3 ~ 0.7%, xaiv) | EN qhov kev xaiv npib tsib xee ntxiv ua kom qis dua cov ductile - mus rau -brittle hloov kub (DBTT) mus rau -50 degree, kom ntseeg tau ductility ntawm -40℃. |
| Test Standard | TS EN 10045-1 | GB/T 229 | Ob leeg siv Charpy V- ntsuas ntsuas ntsuas - cov txiaj ntsig sib piv. |
Lub rooj sib tham GB Q355D's -40℃Requirement
Rau cov haujlwm uas yuav tsum tau ua raws li Q355D's -40℃/ 34 J, qhia meejEN S355J4(EN 10025-2), qib hwm nrog:
34 J cuam tshuam lub zog ntawm -40 degree.
Tighter impurity tswj (P: Tsawg dua lossis sib npaug rau 0.025%, S: Tsawg dua lossis sib npaug rau 0.020%).
Cov ntsiab lus nickel siab dua (1.0–1.5%) kom qis DBTT rau -60 degree.
S355J4 yog yooj yim muaj los ntawm European mills (xws li, ArcelorMittal, Thyssenkrupp) thiab ua tau raws li tag nrho GB 50017-2017 lub cheeb tsam txias.
Piv txwv daim ntawv thov
Lub tuam txhab hluav taws xob suav siv EN S355J2 IPE 300 kab teeb rau -30℃fais fab kis ntauwd hauv Heilongjiang:
Kev sim cuam tshuam: Beams khaws cia 22 J ntawm -40℃(siab tshaj 20 J yam tsawg kawg nkaus rau kev ua haujlwm nyab xeeb).
Field Performance: Tsis muaj teeb meem tawg lossis qaug zog tom qab 4 xyoos ntawm kev pabcuam, lees paub kev sib raug zoo nrog Q355D.
EN S355J2 (thiab S355J4 rau cov xwm txheej nruj) yog ib qho kev txhim khu kev qha rau cov dej txias-cov haujlwm hauv cheeb tsam.