GB/T18984低温管道用无缝钢管适用于-45℃~195℃级低温压力容器管道以及低温热交换器管道用无缝钢管
低温管道用无缝钢管冲击温度:
标准 | 级别 | zuì低冲击试验温度 | |
℉ | ℃ | ||
GB/T18984-2013 | 16MnDG | -- | -45 |
10MnDG | -- | -45 | |
09DG | -- | -45 | |
09Mn2VDG | -- | -70 | |
06Ni3MoDG | -- | -100 | |
ASTM A333 | Grade1 | -50 | -45 |
Grade3 | -150 | -100 | |
Grade4 | -150 | -100 | |
Grade6 | -50 | -45 | |
Grade7 | -100 | -75 | |
Grade8 | -320 | -195 | |
Grade9 | -100 | -75 | |
Grade10 | -75 | -60 |
力学性能:
标准 | 牌号 | 抗拉强度(Mpa) | 屈服强度(Mpa) | 伸长率(%) | |
纵向 | 横向 | ||||
GB/T18984-2013 | 16MnDG | 490-665 | ≥325 | ≥30 | -- |
10MnDG | ≥400 | ≥240 | ≥35 | -- | |
09DG | ≥385 | ≥210 | ≥35 | -- | |
09Mn2VDG | ≥450 | ≥300 | ≥30 | -- | |
06Ni3MoDG | ≥455 | ≥250 | ≥30 | -- | |
ASTM A333 | Grade1 | ≥380 | ≥205 | ≥35 | ≥25 |
Grade3 | ≥450 | ≥240 | ≥30 | ≥20 | |
Grade4 | ≥415 | ≥240 | ≥30 | ≥16.5 | |
Grade6 | ≥415 | ≥240 | ≥30 | ≥16.5 | |
Grade7 | ≥450 | ≥240 | ≥30 | ≥22 | |
Grade8 | ≥690 | ≥515 | ≥22 | -- | |
Grade9 | ≥435 | ≥315 | ≥28 | -- | |
Grade10 | ≥550 | ≥450 | ≥22 | -- |
化学成分:
16MnDG、10MnDG和09DG可加入0.01%-0.05%的Ti。
09Mn2VDG可加入0.01%-0.10%Ti或0.015%-0.060%的Nb。
10MnDG和06Ni3MoDG的酸溶铝分别不小于0.015%和0.020%,但不作为交货条件。
标准 | 牌号 | 化学成分(%) | ||||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Al | ||
GB/T18984-2013 | 16MnDG | 0.12-0.20 | 0.20-0.55 | 1.20-1.60 | ≤0.020 | ≤0.010 | -- | -- | -- | -- | -- | -- |
10MnDG | ≤0.13 | 0.17-0.37 | ≤1.35 | ≤0.020 | ≤0.010 | -- | -- | -- | -- | ≤0.07 | -- | |
09DG | ≤0.12 | 0.17-0.37 | ≤0.95 | ≤0.020 | ≤0.010 | -- | -- | -- | -- | ≤0.07 | -- | |
09Mn2VDG | ≤0.12 | 0.17-0.37 | ≤1.85 | ≤0.020 | ≤0.010 | -- | -- | -- | -- | ≤0.12 | -- | |
06Ni3MoDG | ≤0.08 | 0.17-0.37 | ≤0.85 | ≤0.015 | ≤0.008 | -- | -- | -- | -- | -- | -- | |
ASTM A333 | Grade1 | ≤0.30 | -- | 0.40-1.06 | ≤0.025 | ≤0.025 | -- | 2.50~3.70 | -- | 0.15~0.30 | ≤0.05 | -- |
Grade3 | ≤0.19 | 0.18-0.37 | 0.31-0.64 | ≤0.025 | ≤0.025 | -- | 3.18-3.82 | -- | -- | -- | -- | |
Grade4 | ≤0.12 | 0.18-0.37 | 0.50-1.05 | ≤0.025 | ≤0.025 | 0.44-1.01 | 0.47-0.98 | 0.40-0.75 | -- | -- | 0.04-0.30 | |
Grade6 | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.025 | ≤0.025 | -- | -- | -- | -- | -- | -- | |
Grade7 | ≤0.19 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | -- | 2.03-2.57 | -- | -- | -- | -- | |
Grade8 | ≤0.13 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | -- | 8.40-9.60 | -- | -- | -- | -- | |
Grade9 | ≤0.20 | -- | 0.40-1.06 | ≤0.025 | ≤0.025 | -- | 1.60-2.24 | 0.75-1.25 | -- | -- | -- | |
Grade10 | ≤0.20 | 0.10-0.35 | 1.15-1.50 | ≤0.030 | ≤0.015 | ≤0.15 | ≤0.25 | ≤0.015 | ≤0.50 | ≤0.12 | ≤0.06 |