Compatibility testing following AST F483 steps
Basic ASTM F483 Procedure
1 Weigh three of four specimens of the same alloy substrates (Ceramics; Fiberglass; Chrome) to the nearest 0.1 mg.
2 Immerse three weighed specimens of each alloy substrate in the test solution at the prescribed temperature. Place only specimens of the same alloy in the containing vessel. Maintain solution at the required temperature for the prescribed exposure period. Retain the fourth specimen of each alloy for comparison purposes.
3 At the end of 24 h, remove the test specimens and proceed as follows:
3.1 Rinse thoroughly under hot tap water, 49 to 60°C (120 to 140°F). Follow with a rinse in water conforming to Specification D 1193, Type IV DI water at room temperature
3.2 Rinse with a stream of acetone, conforming to Specification D 329, from a wash bottle and oven dry at 120°C (250°F), Desiccate until cooled to ambient, weigh and record
3.3 Then examine for and record on a form as illustrated in Appendix X1 in the 24-h column the following visible changes in comparison with the fourth virgin specimen of each alloy substrate
3.3.1 Discoloration and dulling
3.3.2 Etching
3.3.3 Presence of accretions and relative amounts
3.3.4 Pitting
3.3.5 Presence of selective or localized attack
4 Immerse the panels in the same test solution for a further 144 h, then repeat 3.1-3.3.5
5 Reweigh specimens to nearest 0.1 mg, calculate weight loss or gain, and record in 168-h column