| Material | Young’s modulus, GPa | Poisson’s ratio | Average Hardness, HV | Average Roughness, Ra µm |
Valve | Martensitic, low alloy steel | 210 | 0.29 | 564.8 | 0.409 |
Insert | Cast seat insert | 120 | 0.26 | 470.2 | 1.963 |