1.1 本试验方法规定了程序，其目的仅限于评估安全玻璃材料对弹道威胁的抵抗力。 1.1.1 根据这些方法测试的玻璃可以被指定为防弹等级（BRC）标准。 1.1.2 根据这些方法测试的玻璃能够被分配弹道测试身份（BTI）。 1.1.3 BRC本身并不是绩效排名的指标。只有BTI是根据该试验方法得出的弹道阻力的性能指标。 BRC本身并不能表明其具有完整的抗弹道性能。 1.2 以国际单位制表示的数值应视为标准。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 该试验方法为安全玻璃的防弹性的比较评估提供了基础，不应用于确定或确认对此类攻击造成的损坏、伤害或伤害的绝对预防。 5.2 具有历史商业意义的弹道威胁水平和相应的试验弹药如所示 表1 .描述、重量和速度已更新，以符合现有和在用弹药。如果用户希望使用这些威胁级别，则需要满足相应威胁/性能级别的BTI。附加威胁等级和相应的测试弹药包含在 表X1.1 .

1.1 This test method sets forth procedures whose purpose is limited to the evaluation of the resistance of security glazing materials against ballistic threats. 1.1.1 Glazing tested in accordance with these methods is able to be assigned a ballistic resistant class (BRC) criterion. 1.1.2 Glazing tested in accordance with these methods is able to be assigned a ballistic test identity (BTI). 1.1.3 BRC’s by themselves are not indicators of performance ranking. Only the BTI is the performance indicator of ballistic resistance derived from this test method. BRC by itself is not an indication of the complete ballistic resistance performance. 1.2 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. 1.3 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. ====== Significance And Use ====== 5.1 This test method provides a basis for the comparative evaluation of the ballistic resistance of security glazing and should not be used to establish or confirm the absolute prevention of damage, harm, or injuries from such attacks. 5.2 Ballistic threat levels and corresponding test ammunition of historical commercial significance are indicated in Table 1 . The description, weights, and velocities have been updated to correspond with available and in-use ammunitions. If a user desires to utilize these threat levels, then the BTI for the corresponding Threat/Performance level needs to be met. Additional threat level(s) and corresponding test ammunition are included in Table X1.1 .