ASTM D2207-00(2005)
(Test Method)Standard Test Method for Bursting Strength of Leather by the Ball Method
Standard Test Method for Bursting Strength of Leather by the Ball Method
SIGNIFICANCE AND USE
This test method is designed to measure the bursting strength of leather by measuring the force required to force a spherical ended plunger through a piece of leather. The bursting load and extension will be generally proportional to the diameter of the plunger. This test method is suitable for development, control and service evaluation of the leather. There is good correlation between bursting strength and tensile strength. This test method may not apply when the conditions of the test employed differ widely from those specified in the test method.
SCOPE
1.1 This test method covers the determination of the bursting strength of leather by the ball method. It may be used to test a large variety of leathers and leather products. It is particularly applicable to light- and medium-weight leathers, such as shoe uppers and garments. This test method does not apply to wet blue.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D2207 – 00 (Reapproved 2005)
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 Department of Defense.
1. Scope Method D2209. The machine is operated at a jaw separation of
4 6 1 in./min. The maximum load registered is recorded. The
1.1 This test method covers the determination of the burst-
bursting strength in lb/in. of thickness is calculated by dividing
ingstrengthofleatherbytheballmethod.Itmaybeusedtotest
the bursting load by the thickness of the specimen.
alargevarietyofleathersandleatherproducts.Itisparticularly
applicable to light- and medium-weight leathers, such as shoe
5. Significance and Use
uppers and garments. This test method does not apply to wet
5.1 This test method is designed to measure the bursting
blue.
strength of leather by measuring the force required to force a
1.2 The values stated in inch-pound units are to be regarded
spherical ended plunger through a piece of leather. The
as the standard. The values given in parentheses are for
bursting load and extension will be generally proportional to
information only.
the diameter of the plunger. This test method is suitable for
1.3 This standard does not purport to address all of the
development, control and service evaluation of the leather.
safety concerns, if any, associated with its use. It is the
There is good correlation between bursting strength and tensile
responsibility of the user of this standard to establish appro-
strength. This test method may not apply when the conditions
priate safety and health practices and determine the applica-
of the test employed differ widely from those specified in the
bility of regulatory limitations prior to use.
test method.
2. Referenced Documents
6. Apparatus
2.1 ASTM Standards:
6.1 Testing Machine, as described in Test Method D2209.
D1517 Terminology Relating to Leather
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 Thickness Gage—A dead-mass type of thickness gage
Test Specimens
as described in Test Method D1813.
D2209 Test Method for Tensile Strength of Leather 3
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)).
3. Terminology
6.4 Parts Required to Modify Burst Tester, as illustrated in
3.1 For definitions of leather terms used in this standard
Fig. 2, or equivalent.
refer to Terminology D1517.
6.5 Die, Knife, or Shears, for cutting the test specimen.
6.6 Dial Gage, mounted on the burst tester as shown in Fig.
4. Summary of Test Method
1 to measure the height of the extension of the leather
4.1 The leather specimen is mounted in the ball burst fixture
specimen.
which is attached to a testing machine, as described in Test
NOTE 2—This gage shall be calibrated to read directly to the nearest
0.001 in. (0.025 mm). It shall be equipped with a flat anvil and presser
This test method is under the jurisdiction ofASTM Committee D31 on Leather
foot.
and is the direct responsibility of Subcommittee D31.07 on Physical Properties —
6.7 Autographic Recorder to record the extension to the
General. This test method was developed in cooperation with theAmerican Leather
Chemists Assn. (Standard Method E14 – 1965). nearest 0.1 in. (2.5 mm).
Current edition approved April 1, 2005. Published May 2005. Originally
approved in 1964. Last previous edition approved in 2000 as D2207 – 00. DOI:
10.1520/D2207-00R05.
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 (2005)
calculated by dividing the bursting load by the thickness of the specimen
measured in inches.
9.5 Observe on the gage 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 the nearest 0.001 in. (0.025 mm),
reported for each specimen or averaged and reported as the
thickness of the sample,
10.1.2 Bursting load
...
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