Q: Dab tsi yog cov khoom tseem ceeb ntawm Q235 kauj?
A: Nws yog ib qho qis- carbon steel, feem ntau nrog cov nqi hauv qab no: C: 0.14% ~ 0.22%, Si: ≤0.30%, Mn: 0.30% ~ 0.65%, S≤0.045%, P≤0.045% (me ntsis txawv ntawm cov qib sib txawv).
Q: Puas yog Q235 coil qis -carbon lossis siab - carbon steel?
A: Nws yog qis- carbon steel, nrog cov ntsiab lus carbon ≤0.22%. Nws muaj zoo plasticity thiab toughness, thiab yooj yim rau txheej txheem.
Q: Dab tsi yog qhov txawv ntawm Q235 kauj thiab Q355 kauj?
A: Qhov sib txawv tseem ceeb yog nyob rau hauv lub zog tawm los. Q355 muaj lub zog tawm los ≥355MPa, qhia tias muaj zog dua; Q235 muaj lub zog nruab nrab thiab tus nqi sib tw ntau dua.
Q: Dab tsi yog qib thoob ntiaj teb sib raug rau Q235 kauj?
A: Tsis muaj qib sib npaug thoob ntiaj teb. Nws yog kwv yees li sib npaug rau EU S235JR thiab US A36, tab sis cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv tshuab sib txawv me ntsis thiab yuav tsum tau kuaj xyuas raws li cov neeg siv khoom.
Q: Lub sijhawm xa khoom ntawm Q235 kauj yog dab tsi?
A: Nws feem ntau yog xa hauv kub- dov mob (HR), nrog rau qhov chaw nyob rau hauv kub - dov oxide scale xeev.