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ASTM

ASTM D7912-14

(Test Method)

Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)

Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)

SIGNIFICANCE AND USE
5.1 This test method is intended for use on all types of finished leathers.  
5.2 Finish stability is a significant factor in establishing the application and function of leather.
SCOPE
1.1 This test method covers the determination of resistance of leather finish to cracking, flaking or becoming tacky after aging.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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

Status
Historical
Publication Date
31-Mar-2014
ICS
59.140.30 - Leather and furs
Technical Committee
D31 - Leather
Drafting Committee
D31.05 - Upholstery
Current Stage
Ref Project

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ASTM D7912-14 - Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)ASTM D7912-14 - Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)
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ASTM D7912-14 - Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D7912 − 14
Standard Test Method for
1
Resistance of Finish to Heat Aging (Finish Stability)
This standard is issued under the fixed designation D7912; 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.
1. Scope 5. Significance and Use
1.1 This test method covers the determination of resistance 5.1 This test method is intended for use on all types of
finished leathers.
of leather finish to cracking, flaking or becoming tacky after
aging.
5.2 Finish stability is a significant factor in establishing the
application and function of leather.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
6. Apparatus
standard.
6.1 Forced Circulating Air Oven, capable of maintaining a
1.3 This standard does not purport to address all of the
temperature of 55 to 60°C with a thermo regulator system
safety concerns, if any, associated with its use. It is the
capable of holding oven temperature within 62°C of set point.
responsibility of the user of this standard to establish appro-
A thermometer accurate to 62°C should be used to check and
priate safety and health practices and determine the applica-
monitor the oven set point.
bility of regulatory limitations prior to use.
2
6.2 Steel Stamp Die,10+2cm .
2. Referenced Documents
7. Sampling, Test Specimens, and Test Units
2
2.1 ASTM Standards:
7.1 Primary Sampling Unit—The leather shall be sampled
D1517 Terminology Relating to Leather
in accordance with Practice D2813.
D1610 Practice for Conditioning Leather and Leather Prod-
2
ucts for Testing
7.2 Suggested sample size is 10 cm .
D2813 Practice for Sampling Leather for Physical and
NOTE 1—If necessary, small size may be used. Sample size used should
be included in the report.
Chemical Tests
3
2.2 Federal Test Method:
8. Preparation of Apparatus
Standard No 311 Method 3202 Finish Stability
8.1 Preheat the oven (6.1) to the desired temperature.
3. Terminology
9. Conditioning
3.1 Definitions—For definitions of leather terms see Termi-
9.1 Prior to cutting the specimens, condition the leather in
nology D1517.
accordance with Practice D1610.
4. Summary of Test Method
10. Procedure
4.1 In this test method the finish is visually examined after
10.1 Place the specimen to be tested in the circulating air
the test specimen is exposed to prolonged heating, followed by
oven maintained at a temperature of 55 to 60°C, hanging it so
manual flexing of the specimen.
that complete circulation of the air around the specimen is
1
possible.Exposethespecimeninthismannerfor24 6 ⁄4hand
then allow it to cool. After cooling, double the aged leather
1 over with the grain side in, crease the folded edge by hand
This test method
...

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