1.1 这些测试方法包括测试通常以平板或平板形式制造的刚性电绝缘的程序。它们通常用作端子板、垫片、电压屏障和电路板。 1.2 使用测试方法 D619 （撤回）或规范 D710 适用于硫化纤维的试验。 1.3 本标准中的一些试验方法与IEC 60893-2中的试验方法类似 ，适用于基于热固性树脂的电气用刚性工业层压板。 1.4 试验方法见以下章节: 测验 小节 ASTM标准 测验 方法 丙酮可萃取物 82 到 83 D494页 电弧电阻 47 D495 灰 56 到 60 . 粘接强度 49 到 54 . 易燃性方法I和II 61 到 74 . 线性热膨胀系数 76 D696 抗压强度 25 D695 条件作用 4. D6054 耗散因子 34 到 40 D669 介电强度 28 到 33 D149 膨胀（线性热） 75 D696 曲特性 12 到 24 D790 硬度（洛氏硬度） 55 D785 绝缘电阻和电阻率 41 到 46 D257 介电常数 34 到 40 D150型 抗冲击性 26 D256 拉伸性能 7. 到 11 D638 厚 5. 到 6. D374页 跟踪电阻 48 D2132 扭曲或扭曲 76 到 81 . 吸水率 27 D570 1.5 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.6 这是火灾测试响应标准。参见章节 61 通过 74 ，这是在特定试验条件下评估可燃性和燃烧时间的程序 1.7 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。 具体预防说明见 31.1 和 1.8 . 1.8 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。 1.9 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。 1.10 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====== 18.1 该试验方法为评估高温下刚性电绝缘的机械性能提供了有用的工程信息。 当根据材料和最终使用操作温度选择适当的暴露和测试温度时，使用测试方法作为指示刚性绝缘材料相对热降解的一种手段。

1.1 These test methods cover procedures for testing rigid electrical insulation normally manufactured in flat sheet or plate form. They are generally used as terminal boards, spacers, voltage barriers, and circuit boards. 1.2 Use Test Methods D619 (withdrawn) or Specification D710 for tests applying to vulcanized fibre. 1.3 Some of the test methods contained in this standard are similar to those contained in IEC 60893-2 , which applies to rigid industrial laminated sheets based on thermosetting resins for electrical purposes. 1.4 The test methods appear in the following sections: Test Sections ASTM Test Method Acetone extractable matter 82 to 83 D494 Arc resistance 47 D495 Ash 56 to 60 . Bonding strength 49 to 54 . Flammability methods I and II 61 to 74 . Coefficient of linear thermal expansion 76 D696 Compressive strength 25 D695 Conditioning 4 D6054 Dissipation factor 34 to 40 D669 Dielectric strength 28 to 33 D149 Expansion (linear thermal) 75 D696 Flexural properties 12 to 24 D790 Hardness (Rockwell) 55 D785 Insulation resistance and resistivity 41 to 46 D257 Permittivity 34 to 40 D150 Resistance to impact 26 D256 Tensile properties 7 to 11 D638 Thickness 5 to 6 D374 Tracking resistance 48 D2132 Warp or twist 76 to 81 . Water absorption 27 D570 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 This is a fire-test-response standard. See Sections 61 through 74 , which are the procedures for assessing ignitability and burning time under specific test conditions 1.7 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. Specific precautionary statements are given in 31.1 and 1.8 . 1.8 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. 1.9 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 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 ====== 18.1 This test method provides useful engineering information for evaluating the mechanical behavior of rigid electrical insulation at elevated temperature. When the proper exposure and test temperatures are chosen, depending on the material and end-use operating temperature, use the test method as one means of indicating relative thermal degradation of rigid insulating materials.