ASTM-D3003 Standard Test Method for Pressure Mottling and Blocking Resistance of Organic Coatings on Metal Substrates

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This test method covers the procedures for determining the pressure mottling and sticking, or blocking resistance of organic coatings applied on coil-coated or factory coated metal substrates prior to fabrication. The coated metal is cut into at least four, preferably six, suitably-sized panels which are then subjected to a specified pressure and temperature for a specified time. After the heat is turned off and the specimen cooled, the samples are examined for any signs of sticking or blocking and mottling.





1.1 This test method covers determination of the pressure mottling and sticking, or blocking resistance of organic coatings applied to coil-coated or factory-coated metal prior to fabrication.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of 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.


blocking resistance; pressure mottling;; ICS Number Code 25.220.60 (Organic coatings)

To find similar documents by ASTM Volume:

06.02 (Paint -- Products and Applications; Protective Coatings; Pipeline Coatings)

To find similar documents by classification:

25.220.60 (Organic coatings)

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Document Number


Revision Level

2001 R16 EDITION



Modification Type


Publication Date

Jan. 1, 2017

Document Type

Test Method

Page Count

3 pages

Committee Number