Used temperature of GB standands steel pipe
Used temperature of GB standands steel pipe
Use temperature range of steel pipe
| Type | Standard | Steel grade | Use temperature range | ||
| Normal | Max temperature | Min temperature | |||
| Carbon steel pipe |
GB3087 GB8163 GB9948 |
10 | （-40,425） | 475 | -40 |
| 20 | （-20,425） | 475 | -20 | ||
| Low alloy steel pipe | GB8163 | 16Mn | （-40,450） | 475 | -40 |
| 09MnV | （-70,100） | 100 | -70 | ||
| Alloy steel pipe |
GB5310 GB9948 |
12CrMo | 525 | ||
| 15CrMo | 550 | ||||
| 15Cr1MoV | 675 | ||||
| 1Gr5Mo | 600 | ||||
| Stainless steel pipe | GB2270 | 0Cr18Ni9Ti | （-196,600） | 700 | -196 |
| 00Cr18Ni10 | （-196,425） | 425 | -196 | ||
| 0Cr18Ni12Mo2Ti | （-196,700） | 700 | -196 | ||
| 00Cr17Ni14Mo2 | （-196,450） | 450 | -196 | ||
Below 600 °C, the thermal conductivity of various stainless steels is basically in the range of 10~30W/(m•°C), and the thermal conductivity increases with the increase of temperature.
At 100 ° C, the order of thermal conductivity of stainless steel is 1Cr17, 00Cr12, 2 Cr 25N, 0 Cr 18Ni11Ti, 0 Cr 18 Ni 9, 0 Cr 17 Ni 12M ο 2, 2 Cr25Ni20.
The order of thermal conductivity at 500 ° C is 1 Cr 13 , 1 Cr 17 , 2 Cr 25N, 0 Cr 17Ni12M ο 2 , 0 Cr 18Ni 9 Ti and 2 Cr 25 Ni 20 .
The thermal conductivity of austenitic stainless steel is slightly lower than that of other stainless steels. Compared with ordinary carbon steel, the thermal conductivity of austenitic stainless steel is about 1/4 at 100 °C.