1.1 这些测试方法包括通用（A级）、低温（B级）和高温（C级）的测试 2. 用作电绝缘的非刚性氯乙烯聚合物管或其与其他材料的共聚物。在这些试验方法中，非刚性管应为初始伸长率超过100的管 % 休息时。 注1: 这些试验方法与IEC 60684-2中的试验方法相似，但不完全相同。 1.2 以英寸-磅单位表示的数值应视为标准值，但温度除外，温度应以摄氏度表示。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。 1.3 以下章节介绍了这些程序: 程序 部分 ASTM参考标准 脆性温度 37 – 39 D746 腐蚀试验 68 – 79 D1000 高湿度下的介质击穿电压 59 – 67 E104 介质击穿电压 52 – 58 D149 尺寸测试 8 – 14 D374页 高温的影响 19 – 30 D412页 易燃性试验 D8355 , 试验方法A 耐油性试验 29 – 36 D471 渗透试验 40 – 45 取样 6. 应变消除试验 62 – 67 张力试验 16 – 18 D412页 试验条件 7. 体积电阻率 46 – 51 D257 1.4 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 5. . 1.5 有关耐火试验注意事项，请参阅试验方法 D8355 . 1.6 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====== 4.1 这些试验方法包括大多数被认为对表征非刚性氯乙烯聚合物管很重要的试验方法。虽然它们最初是为这种类型的挤压管开发的，但它们的使用并不限于这种类型的管。 4.2 可接受这些试验方法或替代当代方法的变化，以确定本标准中的性能值，前提是此类方法确保质量水平和测量精度等于或优于本文规定的质量水平和测量精度。 使用替代试验方法的组织有责任证明这种情况。如有争议，应使用本文规定的试验方法。 注2: 有必要提供替代方法，因为（1）希望在不改变结果的情况下简化特定应用程序，（2）希望消除冗余测试并使用制造过程控制期间生成的数据，包括在统计过程控制（SPC）条件下生成的数据，使用本文规定以外的设备和方法。例如，使用激光千分尺或光学比较仪测量尺寸。

1.1 These test methods cover the testing of general-purpose (Grade A), low-temperature (Grade B), and high-temperature (Grade C) 2 nonrigid vinyl chloride polymer tubing, or its copolymers with other materials, for use as electrical insulation. For the purpose of these test methods nonrigid tubing shall be tubing having an initial elongation in excess of 100 % at break. Note 1: These test methods are similar but not identical to those in IEC 60684–2. 1.2 The values stated in inch-pound units are to be regarded as standard, except for temperature, which shall be expressed in degrees Celsius. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 The procedures appear in the following sections: Procedure Section ASTM Reference Standard Brittleness Temperature 37 – 39 D746 Corrosion Tests 68 – 79 D1000 Dielectric Breakdown Voltage at High Humidity 59 – 67 E104 Dielectric Breakdown Voltage 52 – 58 D149 Dimensional Tests 8 – 14 D374 Effect of Elevated Temperatures 19 – 30 D412 Flammability Test D8355 , Test Method A Oil Resistance Test 29 – 36 D471 Penetration Test 40 – 45 Sampling 6 Strain Relief Test 62 – 67 Tension Test 16 – 18 D412 Test Conditions 7 Volume Resistivity 46 – 51 D257 1.4 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 5 . 1.5 For fire test caveats, see Test Methods D8355 . 1.6 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 ====== 4.1 These test methods include most of the test methods that are considered important to characterize nonrigid vinyl chloride polymer tubing. While they were developed initially for this type of extruded tubing, their use is not limited to this type of tubing. 4.2 Variations in these test methods or alternate contemporary methods are acceptable for use determine the values for the properties in this standard provided such methods ensure quality levels and measurement accuracy equal to or better than those prescribed herein. It is the responsibility of the organizations using alternate test methods to be able to demonstrate this condition. In cases of dispute, the test methods specified herein shall be used. Note 2: Provision for alternate methods is necessary because of (1) the desire to simplify procedures for specific applications without altering the result, and (2) the desire to eliminate redundant testing and use data generated during manufacturing process control, including that generated under Statistical Process Control (SPC) conditions, using equipment and methods other than those specified herein. An example would be the use of laser micrometers or optical comparators to measure dimensions.