ASTM D2346-13

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2346 − 00 (Reapproved 2012) D2346 − 13
Standard Test Method for
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Apparent Density of Leather
This standard is issued under the fixed designation D2346; 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 (´) 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
1.1 This test method covers the determination of the apparent density of specimens of leather. This test method does not apply
to wet blue.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
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.
2. Referenced Documents
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2.1 ASTM Standards:
D1610 Practice for Conditioning Leather and Leather Products for Testing
D1813 Test Method for Measuring Thickness of Leather Test Specimens
D2347 Test Method for Measuring Area of Leather Test Specimens
3. Terminology
3.1 Definitions:
3.1.1 apparent density—the weight of a unit volume of bulk leather conditioned for 48 haccording to Practice D1610in an
atmosphere maintained at 73.4 6 1.8°F (23 6 1°C) and 50 6 4 % relative humidity. .
4. Significance and Use
4.1 This test method is designed to determine the apparent density of specimens from their area and thickness. By measuring
apparent density, the degree of loading or of compression of leather can be evaluated. The test method is unsuitable for very soft
leathers such as chamois whose thickness cannot be accurately measured by the test method cited.
5. Apparatus
5.1 Round Die, 2.7 to 3.0 in. (68.6 to 76.2 mm) in diameter.
5.2 Mallet or Clicking Machine.
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5.3 Rule or Steel Tape, graduated in ⁄32 in. or 0.02 in. or in millimetres.
5.4 Balance and set of weights.
5.5 Thickness Gage as described in Test Method D1813.
6. Test Specimen
6.1 The test specimen shall be a disk of leather that has been conditioned as specified in 3.1.1. This specimen may be the same
as that used in Test Method D2347.
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This test method is under the jurisdiction of ASTM Committee D31 on Leather and is the direct responsibility of Subcommittee D31.03 on Footwear. This test method
was developed in cooperation with the Americ
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