Research Article
Lightweight Design and Dynamics Analysis of ZYL-15000D Directional Drill Reducer
Table 3
Material properties of gears.
| | No. | Property | 20CrMnTi | 42CrMo | 20CrNi4 |
| | 1 | Density （Kg/m³） | 7800 | 7850 | 7800 | | 2 | Poisson’s ratio | 0.25 | 0.26 | 0.29 | | 3 | Young’s modulus （Pa） | 2.07 E+11 | 2.21 E+11 | 2.07 E+11 |
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