1.1 本耐火试验响应标准测量了材料、部件或产品燃烧产物中金属损失的腐蚀效应。 1.2 本试验方法提供了产品和材料试样的腐蚀结果，其最大尺寸为100×100 mm，厚度为50 mm。 1.3 有关目标、测试条件和测试限制的其他信息，请参阅 附件A1 . 1.4 尚未研究该试验方法的结果与实际火灾的相关性。 1.5 ISO TC 61（塑料）小组委员会4（燃烧行为）制定了ISO标准，该标准在技术上与本试验方法非常相似，被命名为ISO 11907-4。 1.6 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。（见IEEE/ASTM SI10 .) 1.7 本标准测量并描述了材料、产品或组件在受控条件下对热量和火焰的响应，但其本身并不包括在实际火灾条件下对材料、产品或组件进行火灾危险或火灾风险评估所需的所有因素。 1.8 防火测试本身就很危险。在进行这些测试时，应采取适当的人员和财产保护措施。 1.9 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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。 有关具体的危险说明，请参阅第节 7. . 1.10 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 腐蚀造成的金属损失与导电横截面积减小导致的目标电阻增加直接相关。 5.2 尚未确定本试验方法中使用的金属目标电阻增加与均匀厚度损失报告的金属损失量之间的关系。 5.3 本试验方法用于确定燃烧电气绝缘材料或覆盖物或其组成材料或部件产生的燃烧产物的腐蚀作用。腐蚀是通过标准化靶材上金属厚度的减少来确定的，通过电阻测量。这些目标不一定代表预期的最终用途。 5.4 本试验方法旨在用于电气绝缘或覆盖物材料和产品评估，用于辅助电气绝缘或覆盖物产品设计的额外数据，或用于电气绝缘或覆盖物产品的开发和研究。 5.5 选择与所调查火灾场景相关的初始测试热流值（高达100 千瓦/米 2. ). 测试的其他信息见 A1.2.3 .

1.1 This fire-test-response standard measures the corrosive effect by loss of metal from the combustion products of materials, components, or products. 1.2 This test method provides corrosion results of product and material specimens limited to a maximum size of 100 by 100 mm in area and 50 mm thick. 1.3 Additional information regarding the targets, the test conditions, and test limitations is provided in Annex A1 . 1.4 The results of this test method have not been investigated with respect to correlation to actual fires. 1.5 An ISO standard exists, as developed by ISO TC 61 (Plastics), subcommittee 4 (on burning behavior), which is technically very similar to this test method and is designated ISO 11907-4. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. (See IEEE/ASTM SI10 .) 1.7 This standard measures and describes 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. 1.8 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.9 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. For specific hazard statements, see Section 7 . 1.10 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 The metal loss from corrosion is directly related to the increase in electrical resistance of the target due to the decrease in conductive cross-sectional area. 5.2 The relationship between resistance increase of metallic targets used in this test method and the amount of metal loss as reported by a uniform loss in thickness has not been determined. 5.3 This test method is used to determine the corrosive effect of combustion products from burning electrical insulations or coverings or their constituent materials or components. Corrosion is determined by the reduction of thickness of the metal on standardized targets, as measured by electrical resistance. These targets are not necessarily representative of the intended end use. 5.4 This test method is intended for use in electrical insulations or coverings material and product evaluations, for additional data to assist in design of electrical insulations or coverings products, or for development and research of electrical insulations or coverings products. 5.5 A value of the initial test heat flux is selected to be relevant to the fire scenario being investigated (up to 100 kW/m 2 ). Additional information for testing is given in A1.2.3 .