Table 4 Comparison of EPO and Eeff from the 1st indentation cycle
Material | ET (GPa) | EPO (GPa) | \(\frac{{E_{{{\text{PO}}}} - E_{{\text{T}}} }}{{E_{{\text{T}}} }}\) (%) | Eeff (GPa) | \(\frac{{E_{{{\text{eff}}}} - E_{{\text{T}}} }}{{E_{{\text{T}}} }}\) (%) |
|---|---|---|---|---|---|
Q345R | 190 | 118 | –37.9 | 180 | –5.2 |
SA508-3 | 206 | 144 | –30.1 | 199 | –3.4 |
18Mn | 195 | 132 | –32.3 | 200 | 2.6 |
S30408 | 173 | 127 | 26.5 | 182 | 5.2 |