Corten A (ASTM A242 Hom 1) feem ntau yog xeb-resistant dua Q355NHnyob rau hauv feem ntau sab nraum atmospheric ib puag ncig, tshwj xeeb tshaj yog nyob rau hauv industrial los yog ntug hiav txwv zones.
1. Qhov tseem ceeb ntawm qhov sib txawv (Core vim li cas)
| Element | Corten A (ASTM A242) | Q355NH (GB/T 4171) |
|---|---|---|
| P (phosphorus) | 0.07–0.15% | Tsawg dua lossis sib npaug li 0.030% |
| Cr (Chromium) | 0.50–1.25% | 0.40–0.80% |
| Cu (kwv yees) | 0.25–0.55% | 0.25–0.55% |
| Ni (Nickel) | Tsawg dua lossis sib npaug li 0.65% | Tsawg dua lossis sib npaug li 0.65% |
Corten Amuajsiab dua P thiab Cr, uas yog ib qho tseem ceeb rau kev tsim cov denser, ruaj khov tiv thaiv patina.
qw 355nmuajqis P(rau zoo weldability) thiabqis Cr, ua rau me ntsis tsis muaj zog xeb txheej.
2. Corrosion Performance
Corten A:
Patina stabilizes sai dua thiab zoo ib yam.
Zoo dua tiv tausindustrial pollution, kua qaub los nag, thiab ntug hiav txwv ntsev tsuag.
Lub sij hawm ntev corrosion tus nqi: ~0.01-0.02 hli / xyoo.
qw 355n:
Zoo raudav dav hauv nroog / nyob deb nroog.
Tsawg ruaj khov hauvhigh-chloride los yog hnyav industrialib puag ncig.
Lub sij hawm ntev corrosion tus nqi: ~0.01-0.03 hli / xyoo.
3. Tswv yim Takeaway
SivCorten Arauhnyav ib puag ncig(coastal, industrial, high-pollution) qhov twg siab tshaj corrosion kuj yuav tsum tau.
Sivqw 355nraucov qauv sab nraum zoov(bridges, vaj tse, kos npe) nyob rau hauv me ntsis cua; nws muaj kev ua tau zoo ntawm tus nqi qis.
