ASTM F2398-11(2020)

4.1 This test method offers a laboratory means to measure the inertial properties of bats, specifically weight, balance point, center of percussion, and MOI, in support of other test methods including the ASTM standards referenced in this document.

4.2 Use of this test method can provide sports governing bodies the means to establish rules regarding the physical properties of bats, specifically MOI.

1.1 Method for determining the moment of inertia (MOI), the center of percussion (COP), and the balance point (BP) of baseball and softball bats. These physical properties are used in Test Method F1881, Test Method F1890, and Test Methods F2219.

1.2 The MOI, COP, and BP are measured in the laboratory on test equipment meeting the requirements defined in this test method.

1.3 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.

1.4 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.

1.5 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.