ASTM D2794

ASTM D2794 & ASTM G15– Industrial Physics

ASTM D2794 is a global ASTM international standard test method to measure the resistance of organic coatings to the effects of rapid impact deformation.  

Before samples are tested to ASTM D2794 they typically go through an accelerated aging treatment such as ASTM G154, which replicates sun exposure and heat aging. 

The ASTM D2794 standard is particularly helpful for people who need to estimate the impact resistance of organic coatings as well as the substrate they’re applied to.  

The ASTM D2794 testing process

This ASTM standard involves applying organic coatings to 24-gauge metal panels and dropping a standard weight from a set distance. This creates an indentation that deforms the coating as well as the substrate. 

Because of the poor reproducibility of this ASTM test method, it should be restricted to testing in only one laboratory when numerical values are used.  

Scope:

1.1 This test method covers a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such deformation.

1.2 This test method should be restricted to testing in only one laboratory when numerical values are used because of the poor reproducibility of the method. Interlaboratory agreement is improved when ranking is used in place of numerical values.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.