1.1 本火灾试验响应标准评估了材料、产品和组件在有或无外部点火器的情况下对受控辐射热暴露水平的响应。 1.2 本试验方法确定的火灾试验响应特性包括通风良好条件下材料、产品和组件的可燃性、热释放率、质量损失率、可见烟雾发展和气体释放。 1.3 该测试方法也适用于确定作为计算机火灾模型输入所需的许多参数或值。这些值的示例包括有效燃烧热、表面温度、点火温度和发射率。 1.4 本试验方法还旨在提供其他火灾参数的信息，如导热率、比热、辐射和对流传热系数、火焰辐射系数、空气夹带率、火焰温度、向上和向下火焰蔓延的最低表面温度、气化热、无因次气化热 ( 1. ) 2. Φ火焰蔓延参数（见试验方法 第321页 ). 虽然一些研究表明，该测试方法适用于确定这些火灾参数，但尚未进行充分的测试和研究，以证明包含相应的测试和计算程序。 1.5 热释放速率由耗氧量热法原理确定，通过测量由排气产物流（排气管）中的氧浓度和流速确定的耗氧来确定。该程序在 11.1 通过测量燃烧产物流（排气管）对光的遮蔽来量化烟雾的发展。 1.6 试样暴露于0至50kW/m范围内的恒定热通量 2. 在垂直方向上。在点火和热释放试验期间，使用热线点燃试样中的可燃蒸汽。 与火焰蔓延相关的参数评估需要使用线燃烧器而不是热线点火器。 1.6.1 低热通量水平（<10kW/m）下的热释放测量 2. )需要特殊考虑，如第节所述 A1.1.6 . 1.7 本测试方法是为材料、产品或组件的评估、设计或研发、火灾数学建模或研发而开发的。试样应按代表实际最终产品或系统用途的厚度和配置进行测试。 1.8 第节列出了测试方法的限制 5.5 . 1.9 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.10 本标准用于测量和描述材料、产品或组件在受控条件下对热和火焰的响应，但其本身并未包含实际火灾条件下材料、产品和组件的火灾危险或火灾风险评估所需的所有因素。 1.11 火灾测试本质上是危险的。在进行这些试验时，应对人员和财产采取适当的保护措施。第节给出了有关危险的具体信息 7. . 1.12 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.13 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 本试验方法主要用于确定材料、产品和组件的热释放率。其他参数包括有效燃烧热、质量损失率、点火时间、烟雾和气体产生、发射率和表面温度。试样的示例是在其最终使用厚度中测试的材料或产品的组件。因此，该测试方法适用于评估墙壁组件的热释放率。 5.2 当这些细节是正常设计的一部分时，组件的代表性接头和其他特征应包含在样本中。 5.3 该测试方法适用于没有理想平面外表面的最终用途产品。应将热通量调整为表面与辐射板平均距离所需的热通量。 5.4 在该程序中，试样要经受一组或多组特定的实验室测试条件。如果替代了不同的测试条件或改变了最终使用条件，则不可能通过本测试或通过本测试预测所测量的火灾测试响应特性的变化。因此，结果仅适用于本程序中描述的火灾试验暴露条件。 5.5 测试限制: 5.5.1 如果:（a）试样熔化到足以溢出滴水盘，或（b）发生爆炸性剥落，则测试结果的有效性有限。 5.5.2 在解释试验过程中下垂、变形或分层的试样的结果时应谨慎。报告此类行为的观察结果。

1.1 This fire-test-response standard assesses the response of materials, products, and assemblies to controlled levels of radiant heat exposure with or without an external ignitor. 1.2 The fire-test-response characteristics determined by this test method include the ignitability, heat release rates, mass loss rates, visible smoke development, and gas release of materials, products, and assemblies under well ventilated conditions. 1.3 This test method is also suitable for determining many of the parameters or values needed as input for computer fire models. Examples of these values include effective heat of combustion, surface temperature, ignition temperature, and emissivity. 1.4 This test method is also intended to provide information about other fire parameters such as thermal conductivity, specific heat, radiative and convective heat transfer coefficients, flame radiation factor, air entrainment rates, flame temperatures, minimum surface temperatures for upward and downward flame spread, heat of gasification, nondimensional heat of gasification ( 1 ) 2 and the Φ flame spread parameter (see Test Method E1321 ). While some studies have indicated that this test method is suitable for determining these fire parameters, insufficient testing and research have been done to justify inclusion of the corresponding testing and calculating procedures. 1.5 The heat release rate is determined by the principle of oxygen consumption calorimetry, via measurement of the oxygen consumption as determined by the oxygen concentration and flow rate in the exhaust product stream (exhaust duct). The procedure is specified in 11.1 . Smoke development is quantified by measuring the obscuration of light by the combustion product stream (exhaust duct). 1.6 Specimens are exposed to a constant heat flux in the range of 0 to 50 kW/m 2 in a vertical orientation. Hot wires are used to ignite the combustible vapors from the specimen during the ignition and heat release tests. The assessment of the parameters associated with flame spread requires the use of line burners instead of hot wire ignitors. 1.6.1 Heat release measurements at low heat flux levels (< 10 kW/m 2 ) require special considerations as described in Section A1.1.6 . 1.7 This test method has been developed for evaluations, design, or research and development of materials, products, or assemblies, for mathematical fire modeling, or for research and development. The specimen shall be tested in thicknesses and configurations representative of actual end product or system uses. 1.8 Limitations of the test method are listed in Section 5.5 . 1.9 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.10 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions. 1.11 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. Specific information about hazards is given in Section 7 . 1.12 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. 1.13 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 is used primarily to determine the heat release rate of materials, products, and assemblies. Other parameters are the effective heat of combustion, mass loss rate, the time to ignition, smoke and gas production, emissivity, and surface temperature. Examples of test specimens are assemblies of materials or products that are tested in their end-use thickness. Therefore, the test method is suitable for assessing the heat release rate of a wall assembly. 5.2 Representative joints and other characteristics of an assembly shall be included in a specimen when these details are part of normal design. 5.3 This test method is applicable to end-use products not having an ideally planar external surface. The heat flux shall be adjusted to be that which is desired at the average distance of the surface from the radiant panel. 5.4 In this procedure, the specimens are subjected to one or more specific sets of laboratory test conditions. If different test conditions are substituted or the end-use conditions are changed, it is not always possible by or from this test to predict changes in the fire-test-response characteristics measured. Therefore, the results are valid only for the fire test exposure conditions described in this procedure. 5.5 Test Limitations: 5.5.1 The test results have limited validity if: (a) the specimen melts sufficiently to overflow the drip tray, or (b) explosive spalling occurs. 5.5.2 Exercise caution in interpreting results of specimens that sag, deform, or delaminate during a test. Report observations of such behavior.