| sample no. | 1 - 15 | 1 - 16 |
| conditions | 3.5% neutral NaCl solution was sprayed continuously for 72 h | |
| curing grade | 5 | 5 |
| film thickness | 1.18 | 1.16 |
| results | Corrosion area for 72 h is 3% - 4% | |