Coating Adhesion Pull-off Test
ISO 4624 pull-off adhesion strength - marine specs require ≥ 3 MPa for new-build coatings, ≥ 5 MPa for PSPC-qualified.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Pull force at failure | N | |
| Dolly diameter | mm | |
| Adhesion strength | MPa |
Source: ISO 4624 - Pull-off test for adhesion
In short
ISO 4624 pull-off adhesion strength - marine specs require \u2265 3 MPa for new-build coatings, \u2265 5 MPa for PSPC-qualified.