1.Q235B steel txawv li cas Q235A?
Teb: Q235B muaj qhov nruj dua qhov yuav tsum tau ua kom muaj zog ntawm chav tsev kub thiab qis dua phosphorus / sulfur txwv piv rau Q235A, uas tsis muaj qhov yuav tsum tau kuaj xyuas.
2.Yuav ua li cas yog 20 # steel txawv ntawm 45 # steel?
Teb: 20# steel muaj qis carbon cov ntsiab lus (0.20% vs . 0.45% rau 45#), ua rau nws softer thiab ntau ductile, thaum 45 # steel yog ib qho nyuaj thiab muaj zog tom qab kev kho cua sov.
3.Dab tsi yog lub zog ntawm Q235B steel?
Teb: Qhov tsawg kawg nkaus lub zog ntawm Q235B steel yog 235 MPa.
4.Lub zog ntawm 20 # steel yog dab tsi?
Teb: Lub zog tawm los ntawm 20 # steel feem ntau ntau dua lossis sib npaug rau 245 MPa.
5.Dab tsi yog lub zog tensile ntawm Q235B steel?
Teb: Lub zog tensile ntawm Q235B steel yog li ntawm 375 txog 500 MPa.
