ASTM D5052-18

Standard Test Method for Permeability of Leather to Water Vapor

SIGNIFICANCE AND USE
4.1 This test method is intended for use on all types of leathers.  
4.2 Water vapor permeability is one of several factors contributing to the relative comfort of footwear, handwear, and garments.
SCOPE
1.1 This test method covers the determination of the permeability of leather to water vapor by measuring the rate at which water vapor passes through a test specimen. This test method does not apply to wet blue.  
1.2 The values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents, therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the 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: Historical
• Publication Date: 30-Sep-2018
• ICS: 59.140.30 - Leather and furs
• Technical Committee: D31 - Leather
• Drafting Committee: D31.07 - Physical Properties

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5052 − 18
Standard Test Method for
1
Permeability of Leather to Water Vapor
This standard is issued under the fixed designation D5052; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the perme- 4.1 This test method is intended for use on all types of
ability of leather to water vapor by measuring the rate at which leathers.
water vapor passes through a test specimen. This test method
4.2 Water vapor permeability is one of several factors
does not apply to wet blue.
contributing to the relative comfort of footwear, handwear, and
1.2 The values stated in either inch-pound or SI units are to garments.
be regarded separately as standard. The values stated in each
5. Apparatus
system may not be exact equivalents, therefore, each system
shall be used independently of the other. Combining values
5.1 Analytical Balance, accurate to 0.001 g.
from the two systems may result in nonconformance with the
5.2 Permeability Apparatus, as shown in Fig. 1. It shall
standard.
consist of an aluminum cup having approximately the dimen-
1
1.3 This standard does not purport to address all of the
sions shown in Fig. 2 and a template, ⁄8 in. thick and 2.225 6
2 2
safety concerns, if any, associated with its use. It is the
0.025 in. in diameter [area is 0.0025 m,or25cm ], made of
responsibility of the user of this standard to establish appro-
brass or other non-corrosive metal. As an alternate, aluminum
priate safety, health, and environmental practices and deter-
cups of the same approximate dimensions and mechanically
mine the applicability of regulatory limitations prior to use.
sealed can be used.
1.4 This international standard was developed in accor-
5.3 Steel Stamping Die, 2.75 6 0.1 in. in diameter.
dance with internationally recognized principles on standard-
5.4 Constant Temperature and Humidity Chamber, which
ization established in the Decision on Principles for the
may be either a laboratory, a cabinet, or a chamber with
Development of International Standards, Guides and Recom-
circulated air maintained at standard condition (23 6 1°C and
mendations issued by the World Trade Organization Technical
50 6 4 % relative humidity).
Barriers to Trade (TBT) Committee.
5.5 Fan, capable of maintaining an air-flow over the surface
2. Referenced Documents
of thePermeabilityApparatus at a velocity of at least 550 6 50
2
ft/min [2.79 6 0.25 m/s].
2.1 ASTM Standards:
D1610 Practice for Conditioning Leather and Leather Prod-
6. Reagents and Materials
ucts for Testing
6.1 Dessicant, consisting of fresh 8 mesh anhydrous cal-
3. Summary of Test Method
cium chloride.
3.1 In this test method the water vapor permeability is 6.2 Microcrystalline Wax, with a melting point of 70°C or
measured after the test specimen is exposed to moist air on one
lower.
side and dry air on the other side.
7. Procedure
7.1 All specimens shall be conditioned as prescribed in
1
Practice D1610. Conditioning other than as prescribed shall be
This test method is under the jurisdiction ofASTM Committee D31 on Leather
and is the direct responsibility of Subcommittee D31.07 on Physical Properties
noted in the results.
Current edition approved Oct. 1, 2018. Published October 2018. Originally
7.2 Fill the aluminum cup with the desiccant to a height
approved in 1990. Last previous edition approved in 2010 as D5052 - 00 (2010).
1 1
DOI: 10.1520/D5052-18.
between ⁄8 and ⁄4 in. [3.2 to 6.4 mm] below the level of the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
rim, as shown in Fig. 1. Leave enough space so that shaking of
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
the dish, which must be done after each weighing, will mix the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. desiccant. Place the specimen, with the grain side downward,
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5052 − 18
8. Calculation
8.1 Calculate the permeability to water vapor of the test
specimen by one of the following equations:
I
P 5 (1)
AT
where:
P = watervaporpermeabilityingramspersquarecentimetre
per hour,
I = increase in weight in grams in total time,
A = area of the exposed specimen in square centimetres
(normally 25), and
T = total time of exposure in hours between intial an
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5052 − 00 (Reapproved 2010) D5052 − 18
Standard Test Method for
1
Permeability of Leather to Water Vapor
This standard is issued under the fixed designation D5052; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers the determination of the permeability of leather to water vapor by measuring the rate at which water
vapor passes through a test specimen. This test method does not apply to wet blue.
1.2 The values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system
may not be exact equivalents, therefore, each system shall be used independently of the other. Combining values from the two
systems may result in nonconformance with the 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 safety, health, and healthenvironmental 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1610 Practice for Conditioning Leather and Leather Products for Testing
3. Summary of Test Method
3.1 In this test method the water vapor permeability is measured after the test specimen is exposed to moist air on one side and
dry air on the other side.
4. Significance and Use
4.1 This test method is intended for use on all types of leathers.
4.2 Water vapor permeability is one of several factors contributing to the relative comfort of footwear, handwear, and garments.
5. Apparatus
5.1 Analytical Balance, accurate to 0.001 g.
5.2 Permeability Apparatus, as shown in Fig. 1. It shall consist of an aluminum cup having approximately the dimensions
2 2
1
shown in Fig. 2 and a template, ⁄8 in. thick and 2.225 6 0.025 in. in diameter [area is 0.0025 m , or 25 cm ], made of brass or
other non-corrosive metal. As an alternate, aluminum cups of the same approximate dimensions and mechanically sealed can be
used.
5.3 Steel Stamping Die, 2.75 6 0.1 in. in diameter.
5.4 Constant Temperature and Humidity Chamber, which may be either a laboratory, a cabinet, or a chamber with circulated
air maintained at standard condition (23 6 1°C and 50 6 4 % relative humidity).
1
This test method is under the jurisdiction of ASTM Committee D31 on Leather and is the direct responsibility of Subcommittee D31.07 on Physical Properties
Current edition approved Oct. 1, 2010Oct. 1, 2018. Published November 2010October 2018. Originally approved in 1990. Last previous edition approved in 20052010
as D5052 - 00 (2005).(2010). DOI: 10.1520/D5052-00R10.10.1520/D5052-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5052 − 18
FIG. 1 Permeability Apparatus
5.5 Fan, capable of maintaining an air-flow over the surface of the Permeability Apparatus at a velocity of at least 500 ft/min
[254 550 6 50 ft/min [2.79 6 0.25 m/s].
6. Reagents and Materials
6.1 Dessicant, consisting of fresh 8 mesh anhydrous calcium chloride.
6.2 Microcrystalline Wax, with a melting point of 70°C or lower.
7. Procedure
7.1 All specimens shall be conditioned as prescribed in Practice D1610. Conditioning other than as prescribed shall be noted
in the results.
1 1
7.2 Fill the aluminum cup with the desiccant to a height between ⁄8 and ⁄4 in. [3.2 to 6.4 mm] below the level of the rim, as
shown in Fig. 1. Leave enough space so that shaking of the dish, which must be done after each weighing, will mix the desiccant.
Place the sp
...