Comparison table highlighting in-vitro results for both materials
| In-vitro results | 17-4PH SS | Cu |
|---|---|---|
| Linear polarization resistance (Rp) (Ω) | 3.05 × 106 | 3.47 × 104 |
| Anodic constant (βa) | 0.08404 | 0.05285 |
| Cathodic constant (βc) | 0.10121 | 0.19952 |
| Equivalent weight (EW) (g/mol) | 27.92 | 31.80 |
| Density (ρ) (g/cm3) | 7.80 | 8.96 |
| Exposer area (A) (cm2) | 1.5 | 1.8 |
| Constant (K) (mm/year) | 0.00327 | 0.00327 |
| Corrosion current (Icorr) (A) | 6.56 × 10–7 | 9.00 × 10–7 |
| Corrosion rate (CR) (mm/year) | 5.12 × 10–8 | 5.80 × 10–8 |