Standard Test Method for Continuity of Porcelain Enamel Coatings
STANDARD published on 1.5.2024
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Designation standards: ASTM C743-24
Publication date standards: 1.5.2024
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
This test method provides for easy detection of discontinuities and areas of light coverage that are not readily seen by visual inspection on corrosion protective porcelain enamel coatings. These two issues limit the protection to the metal substrate. Apparatus includes a nondestructive coating thickness gage, either an ac or a dc high-voltage discharge test instrument with a continuously variable output voltage, and a mesh wire gauze test probe. This test uses porcelain enameled glass coating specimens of any size which should be removed from an edge or the back of a specimen and then properly conditioned as specified. If the probe is wider than the specimen, the specimen edges should be masked using electrical insulating tape.
Keywords:
continuity, glass coating, high voltage test, light coverage, porcelain enamel, porcelain enamel thickness,, ICS Number Code 25.220.50 (Enamels)