ASTM D1516-05(2021)

Standard Test Method for Width of Leather

SIGNIFICANCE AND USE
3.1 This test method is designed to measure the width of specimens before and after they are subjected to various tests which may change the width. A test procedure wherein such measurements could be used is the change in area of square pieces when measuring the resistance of leather to synthetic perspiration solution.
SCOPE
1.1 This test method covers determination of the width of physical test specimens and of regularly shaped units and pieces of all types of leather. This test method does not apply to wet blue.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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-Aug-2021
• ICS: 59.140.30 - Leather and furs
• Technical Committee: D31 - Leather
• Drafting Committee: D31.07 - Physical Properties

Relations

• Refers: ASTM D1610-01(2013) - Standard Practice for Conditioning Leather and Leather Products for Testing
• Effective Date: 01-May-2013
• Refers: ASTM D1610-01(2007) - Standard Practice for Conditioning Leather and Leather Products for Testing
• Effective Date: 01-Apr-2007
• 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

Overview

ASTM D1516-05(2021): Standard Test Method for Width of Leather is an internationally recognized standard developed by ASTM International. This standard specifies procedures for accurately determining the width of physical test specimens and regularly shaped units or pieces of all types of leather, except wet blue. It is primarily utilized before and after various physical tests that may alter the leather's width, supporting consistent quality and traceability in the evaluation of leather products.

This test method is widely referenced in quality control, research, and product development within the leather industry, ensuring uniform measurement procedures and reliable results.

Key Topics

• Specimen Preparation and Conditioning:
  Leather specimens, units, or pieces are conditioned for 48 hours in an environment maintained at 73.4 ± 1.8°F (23 ± 1°C) and 50 ± 4% relative humidity, following ASTM D1610 guidelines. Proper conditioning ensures that width measurements are accurate and reproducible.

• Measurement Procedure:

  • Specimens are placed flat without pulling or stretching.
  • Width is measured to the nearest 0.02 inches (0.5 mm), using appropriate instruments such as a steel scale or steel tape.
  • Multiple width measurements may be required depending on the shape or variability of the specimen.

• Data Reporting:

  • Individual and average width measurements are reported with precision matching the original observations.
  • Specific reporting procedures underpin reproducibility and comparability across laboratories.

• Precision and Reliability:

  • When at least 15 units are tested, a coefficient of variation of approximately 1.8% can be expected between laboratories, particularly for specimens subjected to perspiration tests.
  • The method is recognized for its reliability, supporting quality management systems in leather production.

Applications

The ASTM D1516-05(2021) standard is essential for professionals in the leather industry, including manufacturers, quality assurance teams, and laboratories involved in product testing. Key applications include:

• Quality Control:
  Ensuring leather meets width requirements for both raw materials and finished goods, minimizing production variances.

• Research and Development:
  Measuring width changes during tests evaluating resistance to synthetic perspiration and other environmental factors.

• Compliance and Certification:
  Supporting documentation for international trade and third-party verification of product dimensions in accordance with ASTM and WTO principles.

• Standardization Across Operations:
  Harmonizing measurement methods for width across different sites, suppliers, and production batches.

Related Standards

Professionals working with ASTM D1516-05(2021) may also refer to these related standards for comprehensive leather evaluation:

• ASTM D1610: Practice for Conditioning Leather and Leather Products for Testing. Governs pre-test specimen conditioning to ensure consistency.
• Other ASTM D31 Standards: Covering a wide range of physical properties for leather material testing.

Adherence to these standards enhances accuracy, comparability, and regulatory compliance in leather testing, supporting reliable product performance and customer satisfaction.

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Keywords: ASTM D1516, leather testing, width measurement, physical test specimens, leather quality, ASTM standards, area change, conditioning leather, synthetic perspiration resistance, leather industry testing.

Standards Content (Sample)

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: D1516 − 05 (Reapproved 2021)
Standard Test Method for
Width of Leather
This standard is issued under the fixed designation D1516; 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 measurements could be used is the change in area of square
pieces when measuring the resistance of leather to synthetic
1.1 This test method covers determination of the width of
perspiration solution.
physical test specimens and of regularly shaped units and
pieces of all types of leather. This test method does not apply
4. Apparatus
to wet blue.
4.1 Steel Scale, graduated to 0.02 in. (0.5 mm).
1.2 The values stated in inch-pound units are to be regarded
4.2 Steel Tape, graduated to ⁄16 in. or in millimetres.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
5. Specimen
and are not considered standard.
5.1 The specimen shall be the prepared test specimen, unit,
1.3 This standard does not purport to address all of the
or piece. It shall be conditioned for 48 h in an atmosphere
safety concerns, if any, associated with its use. It is the
maintained at 73.4 6 1.8 °F (23 6 1 °C) and 50 6 4 % relative
responsibility of the user of this standard to establish appro-
humidity and tested under these conditions. See Practice
priate safety, health, and environmental practices and deter-
D1610.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
6. Procedure
dance with internationally recognized principles on standard-
6.1 Test Specimens—Place the specimen on a flat surface
ization established in the Decision on Principles for the
and flatten it out without pulling or stretching. Measure the
Development of International Standards, Guides and Recom-
width to the nearest 0.02 in. (0.5 mm) at the locations
mendations issued by the World Trade Organization Technical
designated in the test method for making the particular test for
Barriers to Trade (TBT) Committee.
which the specimen was prepared.
2. Referenced Documents
7. Calculation and Report
2.1 ASTM Standards:
7.1 Report the width of the test specimens used as pre-
D1610 Practice for Conditioning Leather and Leather Prod-
scribed in the test method for making the particular physical
ucts for Testing
test for which the specimen was prepared.
7.2 Report the average of the width measurements taken on
3. Significance and Use
any unit or piece to the same accuracy as observed on the
3.1 This test method is designed to measure the width of
original measurements, as the width of the piece.
specimens before and after they are subjected to various tests
which may change t
...