ASTM D1912-00(2010)
(Test Method)Standard Test Method for Cold-Crack Resistance of Upholstery Leather
Standard Test Method for Cold-Crack Resistance of Upholstery Leather
SIGNIFICANCE AND USE
The results are reproducible and correlate with the cold impact test and also correlate with actual practice conditions. A comparison of the significance of this test method with other test methods has also been made.
SCOPE
1.1 This test method covers the measurement of the cold-crack resistance on all types of upholstery leathers, but especially in the field of automotive upholstery. 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 provided 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.
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Designation: D1912 − 00(Reapproved 2010)
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.
1. Scope 4. Significance and Use
4.1 Theresultsarereproducible andcorrelatewiththecold
1.1 This test method covers the measurement of the cold-
6 7
impact test and also correlate with actual practice conditions.
crack resistance on all types of upholstery leathers, but
Acomparisonofthesignificanceofthistestmethodwithother
especially in the field of automotive upholstery. This test
test methods has also been made.
method does not apply to wet blue.
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
4,8
5.1 Greuel Rotary Cold-Fold Test Machine, as shown in
for information only.
Fig. 1 and consisting of two tangential knurled rollers driven
1.3 This standard does not purport to address all of the
by a chain drive.
safety concerns, if any, associated with its use. It is the
5.2 Steel Die or Other Shearing Device.
responsibility of the user of this standard to establish appro-
5.3 Cold Cabinet, capable of maintaining temperatures
priate safety and health practices and determine the applica-
from−50 to+20°F (−45 to−6°C) within 61°F (0.5°C) and
bility of regulatory limitations prior to use.
flexibleenoughsothattemperaturescanbeadjustedeasilyand
quickly in 5° increments.
2. Referenced Documents
5.4 Specimen Racks, constructed so that the specimens may
2.1 ASTM Adjuncts:
be suspended in the air by attachment at point C with a paper
Greuel rotary cold-fold test machine (14 drawings, 1 list)
clip (see Fig. 2).
5.5 Pliers-Type Stapler.
3. Summary of Test Method
5.6 Temperature Indicator, with a range from−50 to+20°F
3.1 In this test method the cold-crack resistance of uphol-
(−45 to−6°C) and an accuracy of 61°F (0.5°C) for measuring
stery leather is measured by means of a mechanically-applied
the temperature of the area adjacent to the specimens in the
pressure to a cone-shaped specimen of leather after both the
cabinet.
specimen and the pressure-device have been conditioned in a
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
from any area on the hide.
This test method is under the jurisdiction ofASTM Committee D31 on Leather
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.
so as to make a cone shape with the finished side out, such as
Current edition approved April 1, 2010. Published May 2010. Originally
E1
approved in 1961. Last previous edition approved in 2005 as D1912–00 (2005) .
DOI: 10.1520/D1912-00R10.
2 5
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-FoldversusColdImpactTestsversusActualCushionTesting.”
Fisher Body Division of General Motors Corp., Specification No. 29.1, dated The sole source of supply of the test m
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