ASTM D2207-00(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: D2207 −00 (Reapproved 2021)
Standard Test Method for
Bursting Strength of Leather by the Ball Method
This standard is issued under the fixed designation D2207; 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 U.S. Department of Defense.
1. Scope 3. Terminology
1.1 This test method covers the determination of the burst- 3.1 For definitions of leather terms used in this standard
ingstrengthofleatherbytheballmethod.Itmaybeusedtotest refer to Terminology D1517.
a large variety of leathers and leather products. It is particularly
applicable to light- and medium-weight leathers, such as shoe 4. Summary of Test Method
uppers and garments. This test method does not apply to wet
4.1 The leather specimen is mounted in the ball burst fixture
blue.
which is attached to a testing machine, as described in Test
1.2 The values stated in inch-pound units are to be regarded
Method D2209. The machine is operated at a jaw separation of
as standard. The values given in parentheses are mathematical 4 6 1 in./min. The maximum load registered is recorded. The
conversions to SI units that are provided for information only
bursting strength in lb/in. of thickness is calculated by dividing
and are not considered standard. the bursting load by the thickness of the specimen.
1.3 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.1 This test method is designed to measure the bursting
priate safety, health, and environmental practices and deter-
strength of leather by measuring the force required to force a
mine the applicability of regulatory limitations prior to use.
spherical ended plunger through a piece of leather. The
1.4 This international standard was developed in accor-
bursting load and extension will be generally proportional to
dance with internationally recognized principles on standard-
the diameter of the plunger. This test method is suitable for
ization established in the Decision on Principles for the
development, control and service evaluation of the leather.
Development of International Standards, Guides and Recom-
There is good correlation between bursting strength and tensile
mendations issued by the World Trade Organization Technical
strength. This test method may not apply when the conditions
Barriers to Trade (TBT) Committee.
of the test employed differ widely from those specified in the
test method.
2. Referenced Documents
2.1 ASTM Standards: 6. Apparatus
D1517 Terminology Relating to Leather
6.1 Testing Machine, as described in Test Method D2209.
D1610 Practice for Conditioning Leather and Leather Prod-
NOTE 1—The machine shall have a cross-head speed of 4 6 1 in./min
ucts for Testing
(1.6 6 0.4 mm/s).
D1813 Test Method for Measuring Thickness of Leather
6.2 ThicknessGauge—Adead-mass type of thickness gauge
Test Specimens
as described in Test Method D1813.
D2209 Test Method for Tensile Strength of Leather
6.3 Burst Tester, as shown in Fig. 1. The diameter of the
ball or plunger shall be ⁄4 in. (0.250 in. (6.4 mm)).
This test method is under the jurisdiction ofASTM Committee D31 on Leather
6.4 Parts Required to Modify Burst Tester, as illustrated in
and is the direct responsibility of Subcommittee D31.07 onPhysical Properties This
test method was developed in cooperation with the American Leather Chemists Fig. 2, or equivalent.
Assn. (Standard Method E14 – 1965).
6.5 Die, Knife, or Shears, for cutting the test specimen.
Current edition approved Sept. 1, 2021. Published October 2021. Originally
approved in 1964. Last previous edition approved in 2015 as D2207 – 00 (2015).
DOI: 10.1520/D2207-00R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM A modified Scott Model W Burst Tester has been found satisfactory for this
Standards volume information, refer to the standard’s Document Summary page on purpose.Available from Precision Scientific, 3737 W. Cortland, Chicago, IL60647.
the ASTM website. Request Ball Burst Fixture Catalog, No. 26651.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D2207 − 00 (2021)
9.3 Operate the machine at 4 6 1 in./min (1.6 6 0.4 mm/s).
9.4 Observe the specimen for total burst. Record the maxi-
mum load registered by the machine as the bursting load.
NOTE 5—Bursting strength, in pounds per inch of thickness, can be
calculated by dividing the bursting load by the thickness of the specimen
measured in inches.
9.5 Observe on the gauge the extension or stretch of the
leather at different loads up to total burst.
10. Report
10.1 Report the following information:
10.1.1 Thickness to t
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