ASTM D1622-98

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1622 – 98
Standard Test Method for
1
Apparent Density of Rigid Cellular Plastics
This standard is issued under the fixed designation D 1622; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * 3.1.3.2 density—shall be interpreted as the apparent core
density if the forming skins have been, or will be, removed
1.1 The values stated in SI units are to be regarded as the
before the material is used.
standard. The values given in parentheses are for information
only.
4. Significance and Use
1.2 This standard does not purport to address all of the
4.1 If the material to be tested includes forming skins, the
safety concerns, if any, associated with its use. It is the
apparent overall density, or the apparent core density, or both,
responsibility of the user of this standard to establish appro-
may be determined. If the material does not have forming
priate safety and health practices and determine the applica-
skins, the term overall density is not applicable.
bility of regulatory limitations prior to use.
4.2 This test method is also applicable to spray foam
NOTE 1—ISO 845 is technically equivalent to this test method.
materials.
4.3 Before proceeding with this test method, reference
2. Referenced Documents
should be made to the specification of the material being tested.
2.1 ASTM Standards:
Any test specimen preparation, conditioning, dimensions, or
D 618 Practice for Conditioning Plastics and Electrical
testing parameters, or combination thereof, covered in the
2
Insulating Materials for Testing
materials specification shall take precedence over those men-
E 691 Practice for Conducting an Interlaboratory Study to
tioned in this test method. If there are no material specifica-
3
Determine the Precision of a Test Method
tions, then the default conditions apply.
2.2 ISO Standard:
ISO 845 Cellular Plastics and Rubbers—Determination of
5. Apparatus
4
Apparent (Bulk) Density
5.1 Analytical Balance or Scale, capable of weighing the
specimens to the nearest 60.1 %.
3. Terminology
5.2 Micrometer Dial Gage, Caliper, or Steel Rule, suitable
3.1 Descriptions of Terms Specific to This Standard:
for measuring dimensions of the specimen to 60.1 %.
3.1.1 apparent core density (of a cellular plastic)—the
5.3 Dual Component Spray Equipment, designed to meter
weight in air per unit volume of a sample, after all forming
the materials.
skins have been removed.
3.1.2 apparent overall density (of a cellular plastic)—the
6. Test Specimen
weight in air per unit volume of a sample, including all forming
6.1 The specimen shall be of a shape whose volume can be
skins. 3 3
readily calculated, and not less than 16.4 cm (1.0 in. )in
3.1.3 When density or apparent density is used in reference
volume.
to a cellular plastic, without further qualification, it shall be
6.2 If the sample is a single object whose weight and
interpreted as follows:
volume can be measured accurately, the total weight and total
3.1.3.1 density—shall be interpreted as being the apparent
volume may be used to determine the sample density. In this
overall density if the material is to be used with forming skins
case, the test specimen is the entire sample.
intact.
6.3 When testing spray foam materials, specimens shall be
prepared as follows:
1 6.3.1 Test specimens shall be taken from finished foam
This test method is under the jurisdiction of ASTM Committee D-20 on Plastics
samples that have been sprayed from compounds in accordance
and is the direct responsibility of Subcommittee D20.22 on Cellular Plastics.
Current edition approved Aug. 10, 1998. Published December 1998. Originally
with 6.3.2.
published as D 1622 – 59 T. Last previous edition D 1622 – 93.
6.3.2 The sample compounds should be sprayed at room
2
Annual Book of ASTM Standards, Vol 08.01.
3
temperature of between 20 to 24°C. Spray equipment should be
Annual Book of ASTM Standards, Vol 14.02.
4
Available from American National Standards Institute, 11 W. 42nd St., 13th adjusted to the best spray pattern and optimum performance.
Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 1622 – 98
1
Spray apply a minimum 1.27
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