ASTM D1912-00(2005)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation: D 1912 – 00 (Reapproved 2005)
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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope Acomparisonofthesignificanceofthistestmethodwithother
2 test methods has also been made.
1.1 This test method covers the measurement of the cold-
crack resistance on all types of upholstery leathers, but
4. Apparatus
especially in the field of automotive upholstery. This test
,
4.1 Greuel Rotary Cold-Fold Test Machine, as shown in
method does not apply to wet blue.
Fig. 1 and consisting of two tangential knurled rollers driven
1.2 The values stated in inch-pound units are to be regarded
by a chain drive.
as the standard. The values given in parentheses are provided
4.2 Steel Die or Other Shearing Device.
for information only.
4.3 Cold Cabinet, capable of maintaining temperatures
1.3 This standard does not purport to address all of the
from−50 to+20°F (−45 to−6°C) within 61°F (0.5°C) and
safety concerns, if any, associated with its use. It is the
flexibleenoughsothattemperaturescanbeadjustedeasilyand
responsibility of the user of this standard to establish appro-
quickly in 5° increments.
priate safety and health practices and determine the applica-
4.4 Specimen Racks, constructed so that the specimens may
bility of regulatory limitations prior to use.
be suspended in the air by attachment at point C with a paper
2. Summary of Test Method clip (see Fig. 2).
4.5 Pliers-Type Stapler.
2.1 In this test method the cold-crack resistance of uphol-
4.6 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 of61°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
machine remain in the cold cabinet during testing.
5. Test Specimen
3. Significance and Use 5.1 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
3.1 Theresultsarereproducible andcorrelatewiththecold
5 6 from any area on the hide.
impacttest andalsocorrelatewithactualpracticeconditions.
5.2 After cutting, the specimen shall be folded and stapled
so as to make a cone shape with the finished side out, such as
ThistestmethodisunderthejurisdictionofASTMCommitteeD31onLeather
is shown in Fig. 2(b). This is done by stapling as close to the
and is the direct responsibility of Subcommittee D31.05 on Upholstery. This
apex of the cone as possible, point D, and then stapling points
standard was developed in cooperation with the American Leather Chemists Assn.
A and B together. Staples should not go through the back
Current edition approved Sept. 1, 2005. Published September 2005. Originally
approved in 1961. Last previous edition approved in 2000 as D1912–00.
section, C.Alternatively, the fastening may be done by means
Sometimes referred to as the Greuel Cold-Fold Test in Upholstery Group
of pressure sensitive tape along the line AB-D.
literature.
In the past cold-crack resistance has been measured by various methods which
were evaluated by the Upholstery Group Technical Committee in April 1957, and
the Cold-Fold Test was adopted as a standard test in the industry. The method has Upholstery Group Technical Committee, Tanners’ Council of America files,
been adopted by the following groups: “CorrelationofCold-FoldversusColdImpactTestsversusActualCushionTesting.”
The Upholstery Leather Group, Tanners’ Council of America. Detailed drawings of this machine are available at a nominal cost from the
Fisher Body Division of General Motors Corp., Specification No. 29.1, dated American Society for Testing and Materials, 100 Barr Harbor Drive, W. Consho-
April 12, 1957. hocken, PA 19428. Request Adjunct ADJD1912.
4 8
Good reproducibility is ev
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