1.1本规范涵盖厚度为0.25 mm（0.01 in.）的苯乙烯-丁二烯薄膜更大。符合本规范的挡板拟用于需要抗冲击的仪器外壳和应用中。制造方法可能需要拉伸或弯曲板材。 1.2本规范涵盖天然和彩色板材。 1.3本规范涵盖了质量要求，包括方向度、翘曲或扭曲量、尺寸、公差和工艺。 1.4以国际单位制表示的数值应视为标准。括号中给出的国际单位仅供参考。 1.5以下预防说明仅适用于本规范第12节的试验方法部分: 本标准无意解决与其使用相关的安全问题。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This specification covers styrene-butadiene sheeting in thicknesses of 0.25 mm (0.01 in.) and greater. Sheeting conforming to this specification is intended for use in instrument housings and applications requiring resistance to impact. Methods of fabrication may require that the sheet be drawn or bent. 1.2 This specification covers natural and colored sheeting. 1.3 This specification covers quality requirements that include degree of orientation, amount of warpage or twist, dimensions, tolerances, and workmanship. 1.4 The values stated in SI units are to be regarded as the standard. The SI units given in parentheses are for information only. 1.5 The following precautionary statement pertains to the test method portion only, Section 12, of this specification: This standard does not purport to address the safety problems 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.