12Cr1MoVG高压合金无缝管力学性能化学成份
尺寸公差
标准
外径公差
壁厚公差
GB/T8163-1999
D<50mm
±0.50mm
+15/-12.5%
最小：+0.45mm
D≥50mm
±1%
最小：-0.40mm
纵向力学性能
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
…
| 尺寸公差 |
| 标准 |
外径公差 |
壁厚公差 |
| GB/T8163-1999 |
D<50mm |
±0.50mm |
+15/-12.5% |
最小：+0.45mm |
| D≥50mm |
±1% |
|
最小：-0.40mm | |
|
纵向力学性能 |
| 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 | |
| 化学成份 |
| 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 | |
