Lub hauv paus huab cua kev ua tau zoo sib xws
ASTM A606-4 ua tau raws li ASTM G101 atmospheric corrosion index (I_LL) Ntau dua lossis sib npaug li 6.0, tib qhov chaw pib xws li ASTM A588, ASTM A242, Q355NH, thiab S355J2W. Tag nrho cov qib no vam khom rau Cu, Cr, Ni, thiab P alloy cov ntsiab lus los tsim kom muaj qhov ntom ntom, nws tus kheej- kho reddish- xim av patina, uas tuaj yeem txo tus nqi corrosion mus txog li 1/4 ntawm cov pa roj carbon zoo tib yam, thiab ua tiav kev siv ntev ntev nrog kev saib xyuas tsis tshua muaj nyob hauv nroog, suburban, thiab me me.
Kev ua tau zoo sib txawv hauv cov xwm txheej tshwj xeeb
Piv nrog ASTM A588: A588 feem ntau yog siv rau hauv nruab nrab thiab tuab daim hlau, nrog rau cov qauv kev coj tus kheej muaj zog, thiab tsim nyog rau cov khoom hnyav xws li txuas hniav thiab cov yees. A606-4 yog cov khoom siv nyias nyias, nrog kev tsim tau zoo dua, thiab cov txheej txheem patina rau saum npoo yog zoo ib yam, uas yog tsim nyog rau architectural cladding thiab hniav qhov chaw.
Piv nrog rau ASTM A242: A242 yog ib qho thaum ntxov - tiam huab cua hlau, nrog me ntsis qeeb qeeb patina tsim ceev nyob rau hauv ib puag ncig me me, thiab yog qhov tsim nyog rau cov khoom siv dav dav xws li kab teeb thiab kab. A606-4 muaj qhov ruaj khov patina tsim kev ua tau zoo, thiab tsim nyog rau cov ntawv thov uas muaj qhov xav tau zoo nkauj
Piv nrog rau cov qib thoob ntiaj teb xws li Q355NH thiab S355J2W: Q355NH tau zoo dua qis- qhov kub thiab txias thiab haum rau cov cheeb tsam txias; S355J2W muaj patina tsim nrawm dua thiab cov nyhuv zoo dua qub, uas yog nrov dua hauv European architectural kho kom zoo nkauj. A606-4 yog qhov sib tw ntau dua nrog cov khoom siv hauv North American thiab cov kev xav tau ntawm kev ua, thiab yog cov khoom siv zoo tshaj plaws rau cov khoom siv hluav taws xob hnyav hnyav hauv cheeb tsam
Common Limitation
Tag nrho cov huab cua huab cua no, suav nrog ASTM A606-4, yuav tau nrawm dua corrosion nyob rau hauv ib puag ncig hnyav xws li lub sijhawm ntev - immersion, high-salinity coastal splash zones, thiab stagnant crevices, thiab yuav tsum tau tsim nrog cov kua thiab qhov cua cov ntsiab lus kom muaj kev ruaj ntseg ntawm patina.
