ASTM D2347-00(2021)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2347 − 00 (Reapproved 2021)
Standard Test Method for
Measuring Area of Leather Test Specimens
This standard is issued under the fixed designation D2347; 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.
1. Scope 4. Significance and Use
1.1 This test method covers the measurement of the surface 4.1 This test method is designed to measure the area of
area of leather test specimens. Unless otherwise specified, the specimens before and after they are subjected to various tests
surface to be measured shall be the grain surface or the surface that may effect surface area. Two test procedures wherein such
most closely adjacent to the grain surface. This test method measurements could be used are for the apparent density of
does not apply to wet blue. leather and the resistance of leather to synthetic perspiration
solution.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
5. Apparatus
standard.
5.1 Die, of appropriate size for round or rectangular leather
1.3 This standard does not purport to address all of the
specimens, having uniform dimensions in the 50 to 80 mm
safety concerns, if any, associated with its use. It is the
range. When rigid and thick leathers, such as sole leathers, are
responsibility of the user of this standard to establish appro-
being measured, a knife may be used to produce the test
priate safety, health, and environmental practices and deter-
specimen provided straight edges are obtained.
mine the applicability of regulatory limitations prior to use.
5.2 Mallet or Clicking Machine.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5.3 Rule or Steel Tape, graduated to 1.0 mm.
ization established in the Decision on Principles for the
5.4 Caliper, graduated to 1.0 mm (recommended for sole
Development of International Standards, Guides and Recom-
leather).
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. 6. Test Specimen
6.1 The specimen shall be a circular or rectangular piece of
2. Referenced Documents
leather cut from leather sides or skins that have been condi-
2.1 ASTM Standards:
tioned in accordance with Practice D1610 for 48hinan
D1610 Practice for Conditioning Leather and Leather Prod-
atmosphere maintained at 73.4 6 1.8 °F (23 6 1 °C) and 50 6
ucts for Testing
4 % relative humidity.
6.2 The specimens used in this test method generally range
3. Terminology
in area from 1500 to 10 000 mm .
3.1 Definitions of Terms Specific to This Standard:
6.3 Do not die out or cut specimens from areas that show
3.1.1 area of a circular specimen—the average diameter
π 2
surface defects such as indentations, creases, or cuts.
squared and multiplied by and reported to the nearest 1 mm .
3.1.2 area of a rectangular specimen—the product of the
7. Procedure
average distance across the width of the grain surface multi-
7.1 Place the specimen with the grain side up on a flat
plied by the average distance across the length of the grain
surface and spread it out without pulling or stretching. Using a
surface of the leather specimen to the nearest 1 mm .
rule or steel tape for fle
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