化学成分/Q690 碳(C)：≤0.18, 锰(Mn)：≤2.00, 硅(Si)：≤0.60, 磷(P)：&le硫(S)：&le铌(Nb) ：≤0.11, 钒(V)：≤0.12, 钛(Ti)：≤0.20, 铬(Cr)：≤1.00, 镍(Ni)：≤0.80,
铜(Cu)：≤0.80, 氮(N)：&le钼(Mo)：≤0.30, 硼(B)：&le铝(Al)：≥0.015,
抗拉强度σb(MPa)730～940
屈服强度σs(MPa ≥640
伸长率(A)/%≥14
规格12X2100XX1650X5250 12X1650X4400 12X1650X4500 12X1650XX2400X1
12X1650X5250 12X2190X4550 12X1800X4700 12X1650X4900 12X1650X4500 10X1410X8000
20X2600X 60X2000X4700 12X1600XX1650X5250 16X2000X4250 50X2400X9200
50X2400X9450 50X2400X9150 50X2400X9050 50X2400X9550 50X2400X8000 50X2400X9100 50X2400X
50X2400X9300 50X2400X9000 50X2400X9400 50X2400X9600 50X2400X9200 50X2400X8850 50X2400X8800
40X2500X8800 40X2500X8900 40X2500X6800 40X2500X 40X2500X8700 40X2500X8900 40X2500X8600
20X2500XX2200X7300 30X2500X6300 10X2500XX2500XX2500X11400
60X2350XX2350XX2300X9660 25X2350XX2400XX2300X1
30X2400X
