ASTM D1654 Standard Test Method for Evaluation of Painted or Coated Specimens
What is ASTM D1654 standard?
Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments1
8. Procedure A—Evaluation of Rust Creepage for Scribed Specimens
8.1 Rinse each specimen after completion of the exposure period, using a gentle stream of water at a temperature up to 45C (110°F). Remove coating along scribe with one of the following methods such that all corrosion of the substrate (that is, rust creepage or undercutting) can be observed using one of the following methods.
8.1.1 Method 1 (Scraping)—Scrape the specimen vigorously with and instrument described in 5.3.1.
8.1.2 Method 2 (Knife)-Pick off the loose or lifted coating with a knife described in 5.3.2.
8.1.3 Method 3 (Paint Stripper)—Soak the panels in paint stripper or suitable solvent as described in 5.3.3 until the coating around the scribe is removed, or can be removed with a spatula.
8.1.4 Method 4 (Air Blow-Of)—Holding the nozzle, as described in 5.3.4, at approximately a 45° angle, blow along the entire scribe line, disturbing the surface adjacent to the scribe adjacent to the scribe mechanically by the air nozzle to ensure an opening for the air blast.
8.1.5 Method 5 (Power Washer)—Using a power washer described in 5.3.5, remove the coating around the scribe.
8.1.6 Other methods can be used to remove loose material around the scribe if agreed upon between purchaser and seller.
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