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GB/T8163-1999(热轧、挤压、扩管）
相关描述: |
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GB/T8163-1999(热轧、挤压、扩管）
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| 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
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| D≥50mm |
±1% |
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最小：-0.40mm
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纵向力学性能
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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 |
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| 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 |
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