| 6BO01262E0 |
Q390B |
12 |
2185 |
8600 |
1.77 |
| 6BO01267E0 |
Q390B |
12 |
2185 |
7300 |
1.503 |
| 6BO01272E0 |
Q390B |
12 |
2185 |
8600 |
1.77 |
| 6BO01277E0 |
Q390B |
12 |
2185 |
7200 |
1.482 |
| 6BO01282E0 |
Q390B |
12 |
2185 |
8500 |
1.75 |
| 6BO01291E0 |
Q390B |
12 |
2185 |
8500 |
1.75 |
| 6BO01297E0 |
Q390B |
12 |
2185 |
7200 |
1.482 |
| 6BO01301E0 |
Q390B |
12 |
2185 |
8500 |
1.75 |
| 6BO01307E0 |
Q390B |
12 |
2185 |
7200 |
1.482 |
| 6BO01311E0 |
Q390B |
12 |
2185 |
8600 |
1.77 |
| 6BO01317E0 |
Q390B |
12 |
2185 |
6700 |
1.379 |
3.2 化学成分
熔炼成分 %
牌号
C
Mn
Si
P
S
Nb
Q390B ≤0.20 1.00~1.60 ≤0.55 ≤0.040 ≤0.040 0.015~0.060 Q390C ≤0.20 1.00~1.60 ≤0.55 ≤0.035 ≤0.035 0.015~0.060 Q390D ≤0.20 1.00~1.60 ≤0.55 ≤0.030 ≤0.030 0.015~0.060
3.3 力学性能 力学性能
牌号
屈服强度 MPa,≥ 抗拉强度 MPa,≥ 延伸率
δ5,%
≥ 冲击功,J Akv,纵向 180°冷弯
试验 规格,mm
≤16
>16~35 >35~50 >50~60 温度℃ ≥ ≤16 >16 Q390B 390
370 350 330 490-650 19 20 34 d=2a d=3a Q390C 390 370 350 330 20 0 34 Q390D 390
370 350 330 20 -20 34