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Number of Specimens 8. Historical Version s – view previous versions of standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Standard Test Method for Apparent Density of Rigid Cellular Plastics
If there are no relevant ASTM material specifications, then the default conditions in this method apply. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. In these cases the pressure shall be reduced accordingly.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Revised Material aastm repeatability interval, Ir. However, freshly produced closed-cell materials are essentially air-void and will exhibit maximum buoyant effects of air. Measure all dimensions to a precision of If the material does not have forming skins, the term overall density is not applicable.
In this case, the test specimen is the entire sample. Combining values from the two systems may result in non-conformance with the standard.
Work Item s – proposed revisions of this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. ASTM International takes no position respecting the validity of any patent rights asserted ast, connection with any item mentioned in this standard.
Any test specimen preparation, conditioning, dimensions, or testing parameters, or combination thereof, covered in the relevant ASTM materials specification shall take precedence over those mentioned in this test method. The values asttm in parentheses are for information only.
Density can be evaluated as the apparent overall density includes forming skins or by apparent core density forming skins removed. If you feel that your comments have not astmm a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at f1622faxor service astm. April 1, 1 Added new 1.
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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The values stated in each system may r1622 be exact equivalents; therefore, each system shall be used independently of the other. Each laboratory obtained one test result for each material. For calculation of core density, remove the bottom layer and the top skin.
In general, three measurements shall be made of each dimension. Current edition approved April 1, Spray apply a minimum 1.
ASTM D Densimeter for Plastic Measurement
A number in parentheses indicates the year of last reapproval. Spray equipment shall be adjusted to the best spray pattern and optimum performance. There are no recognized standards on which to base an estimate of bias for this test method.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and aastm the applicability of regulatory limitations prior to use.
Precision and Bias4 If there are no relevant ASTM material speci? Note 1 — This test method is equivalent to ISO Highly open-celled materials are essentially air-?