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标准 |
牌号 |
抗拉强度 (MPa) |
屈服强度(MPa) ≥ |
延伸率(%) ≥ | |
≤16 |
>16mm | ||||
GB/T8163-1999 |
10 |
335-475 |
205 |
195 |
24 |
20 |
410-550 |
245 |
235 |
20 | |
Q295 |
430-610 |
295 |
285 |
22 | |
Q345 |
490-665 |
325 |
315 |
21 |
标准 |
牌号 |
C |
Si |
Mn |
P≤ |
S≤ |
Ni≤ |
Cu≤ |
Cr≤ |
GB/T8163-1999 |
10 |
0.07-0.14 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
0.25 |
0.15 |
0.25 |
20 |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
0.25 |
0.25 |
0.25 | |
Q295 A |
≤0.16 |
≤0.55 |
0.80-1.50 |
0.045 |
0.045 |
0.30 |
0.30 |
0.30 | |
Q295 B |
≤0.16 |
≤0.55 |
0.80-1.50 |
0.040 |
0.040 |
0.30 |
0.30 |
0.30 | |
Q345 A |
≤0.20 |
≤0.55 |
1.00-1.60 |
0.045 |
0.045 |
0.30 |
0.30 |
0.30 | |
Q345 B |
≤0.20 |
≤0.55 |
1.00-1.60 |
0.040 |
0.040 |
0.30 |
0.30 |
0.30 | |
Q345 C |
≤0.20 |
≤0.55 |
1.00-1.60 |
0.035 |
0.035 |
0.30 |
0.30 |
0.30 | |
Q345 D |
≤0.18 |
≤0.55 |
1.00-1.60 |
0.030 |
0.030 |
0.30 |
0.30 |
0.30 | |
Q345 E |
≤0.18 |
≤0.55 |
1.00-1.60 |
0.025 |
0.025 |
0.30 |
0.30 |
0.30 |
|