Q235B 16MN L245 L290 Q345钢管的力学性能和化学成份

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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
Q215A Q215B


215
22
335-410
34-42
31
0.09-0.15
0.03
0.25-0.55
0.050 0.045


0.045
Q235A Q235B

Q235C

Q235D


235
24
375-460
38-47
26
0.14-0.22 0.12-0.20

≤0.18

≤0.17


0.30
0.30-0.65 0.30-0.70

0.35-0.80

0.35-0.80


0.50 0.45

0.40

0.035


0.045 0.045

0.040

0.035


16Mn(Q345B)
345
35
510-600
51.60
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
0.030
0.030
X52
358
36.5
455
46.4
0.30
-
1.35
0.030
0.030
X56
386
39.4
489
49.9
0.26
-
1.35
0.030
0.030
X60
413
42.1
517
52.7
0.26
-
1.35
0.030
0.030
X65
448
45.7
530
54.0
0.26
-
1.40
0.030
0.030
X70
482
49.2
565
57.6
0.26
-
1.40
0.030
0.030
L245
245
　
415
　
21
0.26
　
1.15
0.030
0.030
L290
290
　
415
　
21
0.28
　
1.25
0.030
0.030
L360
360
　
460
　
19
0.3
　

1.25

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