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Significance and Use
5.1 Coatings attached to substrates are subjected to damaging impacts during the manufacture of articles and their use in service. This impact resistance test method has been found to be useful in predicting the performance of organic coatings for their ability to resist cracking caused by impacts.
1.1 This test method covers a procedure for determining the ability of a coating film and its substrate to resist shattering, cracking, or chipping when the film and substrate are distended beyond their original form by impact.
1.2 This test method does not measure impact resistance but uses rapid impact to improve Test Methods D522, another test method for flexibility. Since the impact of the coating is almost instantaneous, all of the problems associated with time variables in the mandrel tests are eliminated.
1.3 This test method is similar in content but not technically equivalent to Test Method D2794.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D522 Test Methods for Mandrel Bend Test of Attached Organic Coatings
D609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating Products
D823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
D1186 Test Methods for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous Base
D1400 Test Method for Nondestructive Measurement of Dry Film Thickness of Nonconductive Coatings Applied to a Nonferrous Metal Base
D2240 Test Method for Rubber Property--Durometer Hardness
D2794 Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)
ICS Number Code 25.220.60 (Organic coatings)
UNSPSC Code 46181533(Protective coats)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D6905-03(2012), Standard Test Method for Impact Flexibility of Organic Coatings, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top