ASTM D1912-00(2005)e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
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Designation:D1912–00(Reapproved2005)
Standard Test Method for
Cold-Crack Resistance of Upholstery Leather
This standard is issued under the fixed designation D1912; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—Adjunct references were corrected editorially in April 2006.
1. Scope 4. Significance and Use
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1.1 This test method covers the measurement of the cold- 4.1 Theresultsarereproducible andcorrelatewiththecold
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crack resistance on all types of upholstery leathers, but impacttest andalsocorrelatewithactualpracticeconditions.
especially in the field of automotive upholstery. This test Acomparisonofthesignificanceofthistestmethodwithother
method does not apply to wet blue. test methods has also been made.
1.2 The values stated in inch-pound units are to be regarded
5. Apparatus
as the standard. The values given in parentheses are provided
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for information only. 5.1 Greuel Rotary Cold-Fold Test Machine, as shown in
Fig. 1 and consisting of two tangential knurled rollers driven
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the by a chain drive.
5.2 Steel Die or Other Shearing Device.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 5.3 Cold Cabinet, capable of maintaining temperatures
from−50 to+20°F (−45 to−6°C) within 61°F (0.5°C) and
bility of regulatory limitations prior to use.
flexibleenoughsothattemperaturescanbeadjustedeasilyand
2. Referenced Documents
quickly in 5° increments.
2.1 ASTM Adjuncts: 5.4 Specimen Racks, constructed so that the specimens may
Greuel rotary cold-fold test machine (14 drawings, 1 list) be suspended in the air by attachment at point C with a paper
clip (see Fig. 2).
3. Summary of Test Method
5.5 Pliers-Type Stapler.
3.1 In this test method the cold-crack resistance of uphol- 5.6 Temperature Indicator, with a range from−50 to+20°F
stery leather is measured by means of a mechanically-applied
(−45 to−6°C) and an accuracy of 61°F (0.5°C) for measuring
pressure to a cone-shaped specimen of leather after both the the temperature of the area adjacent to the specimens in the
specimen and the pressure-device have been conditioned in a
cabinet.
carefully controlled cold cabinet. Both the specimen and the
6. Test Specimen
machine remain in the cold cabinet during testing.
6.1 The specimen shall be cut with a die or other shearing
device to a size shown in Fig. 2(a). The specimen may be cut
ThistestmethodisunderthejurisdictionofASTMCommitteeD31onLeather
from any area on the hide.
and is the direct responsibility of Subcommittee D31.05 on Upholstery. This
6.2 After cutting, the specimen shall be folded and stapled
standard was developed in cooperation with the American Leather Chemists Assn.
Current edition approved Sept. 1, 2005. Published September 2005. Originally so as to make a cone shape with the finished side out, such as
approved in 1961. Last previous edition approved in 2000 as D1912–00. DOI:
10.1520/D1912-00R05E01.
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Sometimes referred to as the Greuel Cold-Fold Test in Upholstery Group Good reproducibility is evidenced by correlation tests conducted by the
literature. Upholstery Leather Group Technical Committee in April 1956 and reported by
In the past cold-crack resistance has been measured by various methods which Fopma, R. J., “Study of Cold-Crack Test for Upholstery Leathers,” The Journal of
were evaluated by the Upholstery Group Technical Committee in April 1957, and the American Leather Chemists’ Association, Vol LIV, No. 4, April 1959, p. 194.
the Cold-Fold Test was adopted as a standard test in the industry. The method has ALCA Test Method E42, Provisional, April 1953.
been adopted by the following groups: Upholstery Group Technical Committee, Tanners’ Council of America files,
The Upholstery Leather Group, Tanners’ Council of America. “CorrelationofCold-FoldversusColdImpactTestsversusActualCushionTestin
...