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ASTM D792-00

Historical Revision

Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

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1.1 These test methods describe the determination of the specific gravity (relative density) and density of solid plastics in forms such as sheets, rods, tubes, or molded items.

1.2 Two test methods are described:

1.2.1 Test Method A --For testing solid plastics in water, and

1.2.2 Test Method B--For testing solid plastics in liquids other than water.

Note 1--Alternatively, Test Method D1505 may be applied to many such forms, as well as to films and sheeting.

1.3 The values stated in SI units are to be regarded as the standard.

1.4 This standard does not purport to address all of the safety problems, 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.

Note 2--This standard is not equivalent to ISO 1183 Method A.


The specific gravity or density of a solid is a property that can be measured conveniently to identify a material, to follow physical changes in a sample, to indicate degree of uniformity among different sampling units or specimens, or to indicate the average density of a large item.

Changes in density of a single specimen may be due to changes in crystallinity, loss of plasticizer, absorption of solvent, or to other causes. Portions of a sample may differ in density because of difference in crystallinity, thermal history, porosity, and composition (types or proportions of resin, plasticizer, pigment, or filler).

Note 6—Reference is made to Test Method D 1622.

Density is useful for calculating strength-weight and cost-weight ratios.

SDO ASTM: ASTM International
Document Number D792
Publication Date Dec. 10, 2000
Language en - English
Page Count 6
Revision Level 00
Supercedes
Committee D20.70
Publish Date Document Id Type View
July 1, 2020 D0792-20 Revision
Nov. 1, 2013 D0792-13 Revision
June 15, 2008 D0792-08 Revision
Dec. 10, 2000 D0792-98 Revision
Dec. 10, 2000 D0792-00 Revision