Ki ranje prensipal konpozisyon chimik Q235?
A: C mwens pase oswa egal a 0.22%, Si mwens pase oswa egal a 0.30%, Mn 0.30%-0.65%, S mwens pase oswa egal a 0.050%, P mwens pase oswa egal a 0.045% (Klas A).
Ki diferans ki genyen nan konpozisyon chimik ant Klas A/B/C/D?
A: C, S, ak P diminye progresivman; Klas A: C Mwens pase oswa egal a 0.22%, S Mwens pase oswa egal a 0.050%; Klas B: C Mwens pase oswa egal a 0.20%, S Mwens pase oswa egal a 0.045%; Klas C: C Mwens pase oswa egal a 0.18%, S/P Mwens pase oswa egal a 0.040%; Klas D: C mwens pase oswa egal a 0.17%, S/P mwens pase oswa egal a 0.035%.
Ki ekivalan kabòn (Ceq) Q235?
A: Ceq≈0.25% -0.30%, ekselan soudabilite, jeneralman pa gen okenn prechofaj obligatwa.
Ki efè souf ak fosfò sou Q235?
A: Souf (S) ogmante brittleness cho, pandan y ap fosfò (P) ogmante frajil frèt; pi wo klas la, pi ba rapò S/P a, ak pi bon an severite.
Ki wòl Manganèz nan Q235?
A: Li se yon eleman prensipal ranfòse, amelyore fòs ak severite, amelyore soudabilite, ak kontrekare efè danjere nan souf.