ASTM F1428-92(2017),Standard Specification for Aluminum Particle-Filled Basecoat/Organic or Inorganic Topcoat, Corrosion Protective Coatings for Fasteners.
ASTM F1428-92(2017) covers the basic requirements for a corrosion-resistant coating consisting of an inorganic aluminum particle-filled basecoat and an organic or inorganic topcoat, depending on the specific requirements.
3. Classification
3. 1 The inorganic aluminum particle-filled basecoat and the subsequent topcoats are classified into three groups, with subsequent subgroups formed according to the requirements given in Table I. The coating bath requirements and cure temperatures recommended by the chemical manufacturer should be followed.
3.2 Regardless of the processes or materials used, the inorganic and organic coatings shall conform to all of the applicable requirements of this specification.
4. Ordering Information
4. 1 Orders for material in accordance with this specification shall include the following information
4. 1. 1 Quantity of parts
4.1.2 Grade of coating(see Table 1).
4.1.3 Color of coating
4. 1.4 Any additions to specifications as agreed upon by the purchaser and the supplier, and
4. 1. 5 Certification and test report requirements.
7. Application
7. 1 Any conventional cleaning procedure that does not induce hydrogen embrittlement or intergranular attack of thebasis metal can be used, followed by grit blasting or micro-zinc phosphating (see Note 2).