Significance and Use
4.1 Primers and primer surfacers may be used over many different surfaces top coated with one or more of a variety of coatings and subjected to many kinds of wear and exposure.
4.2 The selection of the tests to be used for any given product or system must be governed by experience and by the requirement agreed upon between the producer and the user.
Scope
1.1 This practice covers the selection and use of procedures for testing primers and primer surfacers. The test methods included are listed in Table 1.
TABLE 1 Test Methods
Property
Section
ASTM Method
Federal Test
Method Specification No. 141B
Abrasion resistance:
Air blast abrasion tester
Falling sand method
6.2
6.2
D658
D968
…
6191
Adhesion:
Scrape adhesion
6.3
D2197
6303.1
Parallel-groove adhesion
6.3
D2197
6302.1
Tape adhesion
6.3
D3359
…
Chemical resistance:
Household chemical resistance
6.4.2
D1308
…
Detergent resistance
6.4.3
D2248
Hydrocarbon resistance
6.4.4
…
6011
Chip resistance
6.5
D3170
…
Color difference:
Visual evaluation
Instrumental evaluation
6.6
6.6
D1729
D2244
4249.1
6123
Cracking resistance
6.7
D2246
…
Elongation:
Conical mandrel
Cylindrical mandrel
6.8
6.8
D522
D1737
…
…
Filiform corrosion
6.9
D2803
…
Gloss
6.10
D523
6101
Hardness
6.11
D1474
…
Holdout
6.12
C540
…
Mildew resistance
6.13
…
6271.1
Outdoor exposure:
Blistering
6.14.2
D714
6461
Cracking
6.14.2
D661
6471
Rusting
6.14.2
D610
6451
Checking
6.14.2
D660
6421
Print resistance
6.15
D2091
…
Salt spray resistance
6.16
B117
6061
Sanding properties
6.17
…
6321
Water resistance:
High humidity
Water immersion
6.18.2
6.18.3
D1735
D870
…
…
Weldability
6.19
…
A
(A) U.S. Military Specification MIL-P-46105 (MR).
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.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
