Table 2 Material physical property parameters.
Component name | Material | Density (kg/m3) | Elastic modulus (GPa) | Thermal expansion coefficient (10−6/℃) | Thermal conductivity (W/(m·℃)) |
|---|---|---|---|---|---|
Body, bonnet, disc, seat ring | A351 CF3M | 8030 | 195(22℃) 209(−253℃) | 15.3(22℃) 13(−253℃) | 14.1(22℃) 2.3(−253℃) |
Stem | FXM-19 | 7800 | 195(22℃) 209(−253℃) | 14.7(22℃) 13.5(−253℃) | 11.1(22℃) 9.9(−253℃) |
Elastic compensation ring | Inconel 718 | 7750 | 199(22℃) 210(−253℃) | 11.1(22℃) 10.2(−253℃) | 12.8(22℃) 10.3(−253℃) |
