| 钢种 |
力学性能 |
化学成份 |
| 屈服强度 |
抗拉强度 |
伸长率 |
C |
Si |
Mn |
S |
P |
| MPa |
kg/mm² |
MPa |
kg/mm² |
min |
不大于 |
不大于 |
不大于 |
| Q215AQ215B |
215 |
22 |
335-410 |
34-42 |
31 |
0.09-0.15 |
0.03 |
0.25-0.55 |
0.0500.045 |
0.045 |
|
| Q235AQ235B |
235 |
24 |
375-460 |
38-47 |
26 |
0.14-0.220.12-0.20 |
0.3 |
0.30-0.650.30-0.70 |
0.500.45 |
0.0450.045 |
|
|
|
|
|
| Q235C |
≤0.18 |
0.35-0.80 |
0.4 |
0.04 |
|
|
|
|
|
| Q235D |
≤0.17 |
0.35-0.80 |
0.035 |
0.035 |
|
|
|
|
|
| 16Mn(Q345B) |
345 |
35 |
510-600 |
51.6 |
22 |
0.12-0.20 |
0.20-0.55 |
1.2-1.6 |
0.045 |
0.045 |
| X42 |
289 |
29.5 |
413 |
42.1 |
|
0.28 |
- |
1.25 |
0.03 |
0.03 |
| X52 |
358 |
36.5 |
455 |
46.4 |
0.3 |
- |
1.35 |
0.03 |
0.03 |
| X56 |
386 |
39.4 |
489 |
49.9 |
0.26 |
- |
1.35 |
0.03 |
0.03 |
| X60 |
413 |
42.1 |
517 |
52.7 |
0.26 |
- |
1.35 |
0.03 |
0.03 |
| X65 |
448 |
45.7 |
530 |
54 |
0.26 |
- |
1.4 |
0.03 |
0.03 |
| X70 |
482 |
49.2 |
565 |
57.6 |
0.26 |
- |
1.4 |
| |
