- Sand blasted surface needs no phosphating. Epoxy finishes can be done directly on the freshly sand blasted surface.
- Sand blasted surface gives coarse phosphate coating
- Mineral acid pickling results large crystals
- Organic acid pickling results medium crystals
- Solvent vapour degreasing gives fine crystals
- Surface conditioning by colloidal titanium base gives fine crystals and thin coating
- Tool marks on the metal surface create nuclear sites for phosphate crystals.