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ASTM E643-24

Current Revision

Standard Test Method for Ball Punch Deformation of Metallic Sheet Material

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1.1 This test method covers the procedure for conducting the ball punch deformation test for metallic sheet materials intended for forming applications. The test applies to specimens with thicknesses between 0.008 in. and 0.080 in. (0.2 mm and 2.0 mm).

Note 1: The ball punch deformation test is intended to replace the Olsen cup test by standardizing many of the test parameters that previously have been left to the discretion of the testing laboratory.

Note 2: The modified Erichsen test has been standardized in Europe. The main differences between the ball punch deformation test and the Erichsen test are the diameters of the penetrator and the dies. Erichsen cup heights are given in SI units.

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.


4.1 The ball punch deformation test is widely used to evaluate and compare the formability of metallic sheet materials. Biaxial stretching is the predominant mode of deformation occurring during the test and, therefore, the results are most often used to rate or compare materials that are to be formed mainly by stretching. However, precise correlations between the cup height as determined by this test and the formability of a sheet material under production conditions have not been established.

4.2 Cup heights for specimens from the same sample can vary with differences in magnitude of hold-down force, lubrication, and method determining the of end point of the test. The procedures described in Sections 5, 7.1, and 7.3 will minimize these variations.

SDO ASTM: ASTM International
Document Number E643
Publication Date May 15, 2024
Language en - English
Page Count 5
Revision Level 24
Supercedes
Committee E28.02
Publish Date Document Id Type View
May 15, 2024 E0643-24 Revision
May 1, 2015 E0643-15 Revision
Jan. 1, 2000 E0643-84R00 Revision
Jan. 1, 2000 E0643-09 Revision
Jan. 1, 2000 E0643-84R95 Reaffirmation