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ASTM

ASTM D7912-14(2023)

(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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Dec-2022
ICS
59.140.30 - Leather and furs
Technical Committee
D31 - Leather
Drafting Committee
D31.05 - Upholstery
Current Stage
Ref Project

Relations

Refers
ASTM D1517-15 - Standard Terminology Relating to Leather
Effective Date
01-Dec-2015
Refers
ASTM D1610-01(2013) - Standard Practice for Conditioning Leather and Leather Products for Testing
Effective Date
01-May-2013
Refers
ASTM D1517-10 - Standard Terminology Relating to Leather
Effective Date
01-Oct-2010
Refers
ASTM D2813-03(2008) - Standard Practice for Sampling Leather for Physical and Chemical Tests
Effective Date
01-Sep-2008
Refers
ASTM D1610-01(2007) - Standard Practice for Conditioning Leather and Leather Products for Testing
Effective Date
01-Apr-2007
Refers
ASTM D1517-06 - Standard Terminology Relating to Leather
Effective Date
01-Oct-2006
Refers
ASTM D1517-04e1 - Standard Terminology Relating to Leather
Effective Date
01-Sep-2004
Refers
ASTM D1517-04 - Standard Terminology Relating to Leather
Effective Date
01-Sep-2004
Refers
ASTM D1517-99(2004) - Standard Terminology Relating to Leather
Effective Date
01-Apr-2004
Refers
ASTM D2813-03 - Standard Practice for Sampling Leather for Physical and Chemical Tests
Effective Date
01-Oct-2003
Refers
ASTM D1610-01 - Standard Practice for Conditioning Leather and Leather Products for Testing
Effective Date
10-May-2001
Refers
ASTM D1610-00 - Standard Practice for Conditioning Leather and Leather Products for Testing
Effective Date
10-May-2001
Refers
ASTM D1517-99 - Standard Terminology Relating to Leather
Effective Date
10-May-1999
Refers
ASTM D2813-97 - Standard Practice for Sampling Leather for Physical and Chemical Tests
Effective Date
10-Apr-1997

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ASTM D7912-14(2023) - Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)ASTM D7912-14(2023) - Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)
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ASTM D7912-14(2023) - Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7912 − 14 (Reapproved 2023)
Standard Test Method for
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 4. Summary of Test Method
1.1 This test method covers the determination of resistance 4.1 In this test method the finish is visually examined after
of leather finish to cracking, flaking or becoming tacky after the test specimen is exposed to prolonged heating, followed by
aging. manual flexing of the specimen.
1.2 The values stated in SI units are to be regarded as
5. Significance and Use
standard. No other units of measurement are included in this
5.1 This test method is intended for use on all types of
standard.
finished leathers.
1.3 This standard does not purport to address all of the
5.2 Finish stability is a significant factor in establishing the
safety concerns, if any, associated with its use. It is the
application and function of leather.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
6. Apparatus
mine the applicability of regulatory limitations prior to use.
6.1 Forced Circulating Air Oven, capable of maintaining a
1.4 This international standard was developed in accor-
temperature of 55 °C to 60 °C with a thermo regulator system
dance with internationally recognized principles on standard-
capable of holding oven temperature within 62 °C of set point.
ization established in the Decision on Principles for the
Athermometer accurate to 62 °C should be used to check and
Development of International Standards, Guides and Recom-
monitor the oven set point.
mendations issued by the World Trade Organization Technical
2 2
Barriers to Trade (TBT) Committee.
6.2 Steel Stamp Die, 10 cm +2cm .
2. Referenced Documents 7. Sampling, Test Specimens, and Test Units
2.1 ASTM Standards: 7.1 Primary Sampling Unit—The leather shall be sampled
in accordance with Practice D2813.
D1517 Terminology Relating to Leather
D1610 Practice for Conditioning Leather and Leather Prod- 2
7.2 Suggested sample size is 10 cm .
ucts for Testing
NOTE 1—If necessary, small size may be used. Sample size used should
D2813 Practice for Sampling Leather for Physical and
be included in the report.
Chemical Tests
8. Preparation of Apparatus
2.2 Federal Test Method:
8.1 Preheat the oven (6.1) to the desired temperature.
Standard No 311 Method 3202 Finish Stability
9. Conditioning
3. Terminology
9.1 Prior to cutting the specimens, condition the leather in
3.1 Definitions—For definitions of leather terms see Termi-
accordance with Practice D1610.
nology D1517.
10. Procedure
1 10.1 Place the specimen to be tested in the circulating air
This test method is under the jurisdiction ofASTM Committee D31 on Leather
and is the direct responsibility of Subcommittee D31.05 on Uph
...

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5.1 Part of the function of a shoe is to assist the foot in maintaining body temperature and to guard against large heat changes. The insulating property of a material used in shoe construction is dependent on porosity or the amount of air spaces present. A good insulating material has a low thermal conductivity value, k. The thermal conductivity value increases with an increase in moisture content since the k value for water is high, 0.0014 cal/s cm · °C (0.59 W/m·K).
SCOPE
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1.1 This test method covers quantitatively determining the water extractable nitrogen in leather.  
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SCOPE
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SCOPE
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SCOPE
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4.1 Bleed resistance is considered to be an important characteristic in leather used to make lined and unlined items that may come in contact with water.
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SCOPE
1.1 This test method covers the determination of the effect of perspiration on shoe upper leather. The leather is subjected to treatment with a formulation of artificial perspiration specific for breakdown of leather. Resistance to grain cracking as measured in accordance with Test Method D2210 and area loss are used as the criterion of deterioration. The artificial perspiration may also affect the flexibility of the leather. However, these effects have not been fully evaluated as criteria of deterioration in this test method. This test method does not apply to wet blue.  
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