1Cr0.5Mo無錫無縫管船舶用無縫鋼管尺寸公差
GB/T5312-1999(熱軋、擠壓、擴(kuò)管)船舶用無縫鋼管
尺寸公差
尺寸公差 | |||
外徑(D) |
≤159 |
%26gt;159 | |
外徑允許偏差 |
±1.0%(最小為±0.5mm) |
±1.25% | |
壁厚(S) |
≤20 |
S%26gt;20 |
D≥351 |
壁厚允許偏差 |
+15%,-10%(最小為+0.45mm,-0.30mm) |
±10% |
±15% |
縱向力學(xué)性能
縱向力學(xué)性能 | ||||
類別 |
綱級(jí) |
抗拉強(qiáng)度(MPa) |
屈服點(diǎn)(MPa)≥ |
延伸率(%)≥ |
碳鋼和碳錳鋼 |
360 |
360-480 |
215 |
24 |
410 |
410-530 |
235 |
22 | |
490 |
490-610 |
285 |
21 | |
1Cr0.5Mo |
440 |
440-600 |
275 |
22 |
2.25Cr1Mo |
410 |
410-560 |
235 |
20 |
490 |
490-640 |
275 |
16 |
化學(xué)成分
化學(xué)成份 | |||||||||||||
分類 |
鋼級(jí) |
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Mo |
Ni |
Cu |
Sn |
W |
總量 |
碳鋼和 碳錳鋼 |
360 |
≤0.17 |
≤0.35 |
0.40-0.80 |
0.040 |
0.040 |
≤0.25 |
≤0.10 |
≤ 0.30 |
≤ 0.30 |
- |
- |
≤ 0.70 |
410 |
≤0.21 |
≤0.35 |
0.40-1.20 |
0.040 |
0.040 |
≤0.25 |
≤0.10 |
≤ 0.30 |
≤ 0.30 |
- |
- |
≤ 0.70 | |
440 |
≤0.23 |
≤0.35 |
0.80-1.50 |
0.040 |
0.040 |
≤0.25 |
≤0.10 |
≤ 0.30 |
≤ 0.30 |
- |
- |
≤ 0.70 | |
1Cr0.5Mo |
440 |
0.10-0.18 |
0.10-0.35 |
0.40-0.70 |
0.040 |
0.040 |
0.70-1.10 |
0.45-0.65 |
≤ 0.30 |
≤ 0.25 |
≤ 0.03 |
≤ 0.020 |
- |
2.25Cr1Mo |
410 |
0.08-0.15 |
0.10-0.35 |
0.40-0.70 |
0.040 |
0.040 |
2.00-2.50 |
0.90-1.20 |
≤ 0.30 |
≤ 0.25 |
≤ 0.03 |
≤ 0.020 |
- |
|