Astm D2794 Pdf Jun 2026
When comparing results between labs, it is recommended to use rankings rather than raw numerical values to improve agreement. standard-astm-d2794.pdf
For example, if a 4-lb weight dropped from a height of 20 inches causes the coating to crack, the impact resistance value is logged as . Factors Influencing ASTM D2794 Test Outcomes
A 10x magnifier is required to inspect the deformed area for micro-cracks. Pin hole detectors, copper sulfate solutions, or tape-pull tests are also used to verify film failure. Step-by-Step Testing Procedure
Primarily used on metallic substrates, such as steel or aluminum panels. Coil Coatings: Evaluating prepainted metal coils. astm d2794 pdf
The ASTM D2794 standard refers to a method for determining the resistance of coated fabrics to flexural stress, specifically the "Standard Test Method for Resistance of Organic Coatings to Exfoliation (Cup Test)". This test is crucial for evaluating the durability and performance of coatings on various substrates, including metals, under conditions that simulate environmental exposure.
The test can be performed in two ways depending on the target application:
ASTM D2794 is a standard test method established by ASTM International. It measures the resistance of organic coatings to the effects of rapid deformation, commonly referred to as an . When comparing results between labs, it is recommended
The final result is reported as the or Newton-meters (N·m) of energy required to cause failure. It is calculated using the following formula:
To evaluate the flexibility and adhesion of a coating system under stress.
If you are setting up a laboratory or preparing a technical report, ensure you reference the latest revision of the standard (e.g., ASTM D2794-93, reapproved periodically) to maintain compliance with modern international expectations. Pin hole detectors, copper sulfate solutions, or tape-pull
This is the most direct international equivalent. Many impact testers are sold with dual certification to both ASTM D2794 and ISO 6272-2.
Remove the panel and inspect the deformed area for cracks, crazing, or delamination.
Standards can be purchased directly as a downloadable PDF or a printed copy.
