Piv nrog cov pa roj carbon hlau (xws li dav siv Q235b), Q235Nh {{{{{5} {corrosion kev ua tau zoo2 txog 5 zaug siab duaNyob rau hauv feem ntau ua si sab nraum zoov ib puag ncig (piv txwv li sab nraum zoov ib puag ncig (suburban, lossis qis - Cov khoom qias neeg). Qhov kev txhim kho no yog feem ntau xav txog qhov sib txawv hauv qhov ntev {{}} lub sij hawm lub raum thiab qhov ruaj khov ntawm cov xeb txheej.
Ua ntej, los ntawm kev pom ntawmCorrosion Txhua Xyoo: Nyob rau sab nraum zoov kis, zoo tib yam carbon steel (zoo li Q235B) tsis muaj huab cua, yog li nws xeb ib txwm xoob, yog li yooj yim peel tawm. Qhov no txhais tau tias cov steel substrate yog nthuav tawm mus rau cov pa oxygen tsis tu ncua, noo noo, thiab cov kuab paug, ua rau ib qho kev ua qias tuaj ntawm kwv yees li 0.1-0.2 hli. Nyob rau hauv sib piv, Q235NH muaj cov huab cua yuav tsum tau ua (piv txwv li, cu ntau dua lossis sib npaug rau ntawm cov txheej txheem xeb thaum lub sij hawm corrosion. Cov ntsiab lus no txhawb kev tsim cov tuab, adherent "tiv thaiv patina" (tsuas yog siv ntawm ruaj khov {feooh). Tom qab no Patina Stabilizes (feem ntau noj 2-3 xyoos nyob rau hauv ib puag ncig me me), Q235NH's txhua xyoo corrosion tus nqi kom tsuas yog 0.02-0.05 hli-Txo tus nqi corrosion los ntawm 50% mus rau 80%piv rau cov pa roj carbon hlau zoo tib yam.
Thib ob, hais txogRustltric durability: Cov xeb xoob ntawm cov roj carbon hlau feem ntau peels tawm nrog cua thiab nag, xav tau kev saib xyuas ntau zaus (xws li tiv thaiv ntxiv corrosion. Q235NH Txoj Kev Tiv Thaiv Patina, ib zaug tsim, daim ntawv cog lus kom nruj nreem rau lub substrate thiab tsis yooj yim los ntawm tej yam kev puas tsuaj. Txawm nyob rau hauv me ntsis harsher ib puag ncig ib puag ncig (piv txwv li cov chaw muaj kuab lom rau xyoo lawm), zam kev xav tau kev ua ib txwm muaj rau {{5 5}} kev kho corrosion.
Nws yog tsim nyog sau tseg tias nyob rau hauv huab heev ib puag ncig (piv txwv li cov chaw ntug dej hiav txwv ntawm cov roj av muaj ntau yam ntxiv), ua tsaug rau lub patina zoo dua rau kuab paug.
