Q355NHD muajzoo dua qis -kub toughnesstshaj cov qib pib xws li Q355A, Q355B, thiab Q235.
Cov pa roj carbon monoxide dawb no muaj cov khoom siv hluav taws xob siab - mus rau - qhov hloov pauv hloov kub thiab tsis muaj zog cuam tshuam ntawm qhov qis - xoom kub, ua rau lawv yooj yim tawg hauv qhov chaw txias.
Q355NHD yog tshwj xeeb alloyed thiab tswj nyob rau hauv ntau lawm kom khaws toughness ntawm-20℃thiab feem ntau -40 degree, thaum Q355B feem ntau tsuas lav qhov cuam tshuam ntawm +20℃.
Q355NHD yogpiv rau Q355C/Dhauv qis-kub toughness. Feem ntau Q355NHD cov khoom ua tau raws li qhov yuav tsum tau muaj ntawm-20 degree, piv Q355D.
Q355E, tsim tshwj xeeb rau kev pabcuam cryogenic, muajsuperior toughness ntawm -40℃thiab hauv qab nopiv rau tus qauv Q355NHD.
Qhov txawv tseem ceeb: Q355NHD ntxivatmospheric corrosion kujtsis muaj kev nplua loj rau qis- qhov ua haujlwm kub, qhov Q355C/D/E tsis muaj peev xwm tiv taus huab cua.
Q355NHD qhiazoo li qis-kub toughnessrau ASTM A606 thiab SPA-H. Txhua yam yog huab cua cov qib engineered rau sab nraum zoov siv thiab khaws cia toughness nyob rau hauv cov huab cua txias.
Piv rau cov laus huab cua cov qib steel nrog kev tswj nruj nruj, Q355NHD tau txhim kho qis- qhov kub thiab txias vim yog kev tswj xyuas niaj hnub dov thiab huv si steelmaking.
Tsis muaj ib qho ntawm cov huab cua huab cua no sib haum rau cov hlau tsis muaj zog cryogenic, tab sis txhua yam tsim nyog rau feem ntau sab nraum zoov txias- cov qauv hauv cheeb tsam.
Tshwj xeeb qis-kub HSLA steels (piv txwv li, Q345E, Q420E, nickel-alloyed steels) muajzoo toughness ntawm tsis tshua muaj kub (hauv qab -40 degree)ntau dua Q355NHD.
Cov qib no yog tsim rau Arctic, offshore, lossis cryogenic cia tshuab. Q355NHD tsis yog npaj rau qhov huab cua ntau, tab sis ua tau zoo tshaj lawv hauvhuab cua tsis kam.
Unalloyed, untreated carbon steel sai sai ua nkig thaum kub poob. Q355NHD muaj kev nyab xeeb ntau dua rau kev siv cov qauv hauv lub caij ntuj no, siab - qhov siab, lossis thaj chaw txias sab qaum teb.
Rau cov qauv sab nraum zoov uas raug corrosion thiab txias, Q355NHD yog qhov kev xaiv sib npaug dua li siv cov qib qis -toughness carbon steel ntxiv rau txheej.
