ASTM F3866-26

1.1 This test method covers the destructive ball drop testing of flat glass specimens with surface applied Shatter Resistant Window Film (SRWF) intended for use in security glazing applications.

1.2 This test method is a standardized testing and evaluation protocol for SRWF used in impact and loading events.

1.3 This test method uses a standardized test sample configuration, and testing procedure, Test Method F3007 to ensure consistent and comparable results across different SRWF options as compared to a given impact.

1.4 This test method evaluates comparative impact performance when a 2.3 kg (5 lb), 83 mm (3.25 in.) diameter smooth solid steel ball is dropped from a specified height.

1.5 This test method uses SRWF applied to flat annealed monolithic glass only.

1.6 This test method validates a SRWF’s mechanical properties.

1.7 This test method does not yield data that is a substitute for glazing and SRWF test requirements qualifying constructions for safety or security applications.

1.8 This test method does not serve as a qualification towards any other standard and is to be used as a basis for comparison of SRWF only.

1.9 Qualification under this test method provides a baseline performance level and basis for judgment of comparison between products, for SRWF substitution only.

1.10 Testing to this test method shall be performed at a laboratory that is independent from the SRWF manufacturer if required by the authority having jurisdiction or specifier.

1.11 Compliance with this test method does not guarantee the performance of an entire glazing system against any specific blast loads but ensures that the tested film meets baseline retention characteristics.

1.12 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.

1.13 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. Some specific hazard statements are given in Section 6 on Hazards.

1.14 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.

5.1 Various window system test standards have been utilized by the blast mitigation and other protective glazing communities to evaluate the effectiveness of SRWF in retaining glass shards during impact and loading. However, these existing standards lack a unified test specimen and methodology, making direct comparisons between the performance of only the SRWF challenging. This test method will provide that ability.

5.2 This test method provides a baseline performance level and basis for judgment of comparison of results which allows the user the ability to evaluate between products, for SRWF substitution only.

5.3 This test method establishes consistent parameters for test specimen configuration, testing, and the verification of a specific performance requirement.

5.4 Compliance with this test method does not guarantee the performance of an entire glazing system against any specific impact or loading but ensures that the tested film meets baseline retention characteristics.