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Significance and Use
5.1 The static compression-displacement of a baseball or softball is a mechanical property which can correlate to dynamic properties.
5.2 This test method is suitable for obtaining data in research and development, quality control, and classifying balls by the compression-displacement.
5.3 Sports associations can use compression-displacement standards in specifications for official baseballs and softballs standards in specifications for official baseballs and softballs for purposes of consistency of performance.
5.4 This same test procedure can be utilized with other compressive forces and the specified force is not necessarily the same as experienced in actual use.
1.1 This test method describes a comparative measurement method for baseballs and softballs as defined by a static compression displacement test.
1.2 This test method is based on a slow rate force-displacement measurement.
1.3 This procedure is for baseballs and softballs meeting standards established by the sports' governing bodies.
1.4 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.
1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 97.220.40 (Outdoor and water sports equipment)