ASTM D2211

ASTM D2211 – Standard Test Method for Elongation of Leather

Description:

Significance and Use

4.1 The elongation measurement may be made at any designated load and is expressed as a percentage of the original distance between the jaws or between bench marks of the unstretched specimen. The speed of the machine is important. Speeds under or more than 10 ± 2 in./min (4.2 ± 0.8 mm/s) will give variables in the results, thus affecting the reproducibility of the method. The direction relative to the backbone and the width of the test specimen determines the magnitude of the elongation. This test method is excellent for development, control, specification acceptance, and service evaluation of leather. This test method may not apply when the conditions of the test employed differ widely from those specified in the test method.

Scope

1.1 This test method covers the measurement of the elongation or stretch characteristics of leather produced by a tensile load. This test method is intended for use on all types of leather and with all of the breaking load tests. 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.