Astm D 4242 – 02 pdf free download

Standard Test Method for
Inclined Plate Flow for Thermosetting Coating Powders1

This standard is issued under the fixed designation D 4242; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope *

1.1 This test method specifies a method for determining the
flow characteristics of a fused thermosetting coating powder
down a plane inclined at a set angle to the horizontal. The test
gives an indication of the degree of melt flow that may occur
during the curing of the coating powder. This characteristic
contributes to the coherence of the coating, its surface
appearance, and to the degree of coverage over sharp edges (see
Test Method D 2967), however, should not be used as the
sole factor for judgment. The test acts as a useful method for
checking for batch-to-batch variation in the behavior of a given
coating powder. Correlation between the results from coating
powders of differing compositions is not to be expected. This
method is unlikely to yield meaningful results with coating
powders that have gel times of less than one minute at the
test temperature (see Test Method D 4217). Oven drafts, angle
of inclination, and pellet variations significantly affect results
making inter-lab reproducibility somewhat difficult to correlate.

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 to determine the
applicability of regulatory limitations prior to use.

2. Referenced Documents

2.1 ASTM Standards:
D 792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement2
D 2967 Test Method for Edge Coverage of Powder Coatings3
D 4217 Test Method for Gel Time of Thermosetting Coating Powder 3
D 5965 Test Methods for Specific Gravity of Coating Powders3