1.1 本试验方法涵盖了对连接器电气性能有害的可分离电气连接器重复插入和拔出的影响。 1.2 本试验方法仅限于设计用于连接器中任何一个连接的电流不超过5 A的应用中的电连接器，以及连接器在使用寿命内可多次分离的应用中的电连接器。 1.3 本试验方法仅限于在工作温度低于65°C的空气环境中使用的电气连接器。 1.4 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。 1.5 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熟悉所有危险，包括制造商提供的本产品/材料的适当材料安全数据表（MSDS）中确定的危险，建立适当的安全、健康和环境实践，并在使用前确定监管限制的适用性。 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 电连接器触点材料必须满足电气、机械和经济特性方面的许多要求。电性能的稳定性是这些特性中最重要的一个。接触表面的磨损可能会对这些电性能产生不利影响，尤其是在接触表面为相对薄涂层的设计中。本试验方法提供了一种方法，在与电连接器触点中的应用相关的基础上比较各种材料系统。 4.2 重复插入和拔出连接器可能会对电接触表面造成磨损或其他机械损伤，使这些表面更容易受到环境退化的影响。 本试验方法旨在检测此类过程导致的连接器电性能退化。 4.3 本试验方法描述了对电连接器进行磨损和耐久性试验的程序；程序产生定量结果。这些结果可用于比较不同连接器设计的性能，以便做出有意义的设计选择。这些结果也可用于将连接器的性能与先前制定的标准进行比较，以评估测试样品的质量。 4.4 从本试验方法中获得的试验结果仅适用于在设计和制造上与实际测试等效的连接器组合。 4.5 用户应注意，应将本试验中的条件与连接器在预期应用中所经历的条件进行比较，以确定本试验方法与用户特殊需求的相关性。 例如，本试验方法中的环境应力不如某些工业和海洋环境严重，因此试验结果不直接适用于预测拟在此类区域使用的产品的性能。 4.6 建议以两种方式之一使用该试验方法。首先，它可以用于评估和报告特定连接器系统的性能。在这种情况下，宜以表中所示的格式报告结果 图1 并声明“当根据ASTM标准进行测试时，表中所示结果是针对（插入连接器名称或描述）获得的 B794 方法 __ , 程序 __ .” 第二，它可以用于对产品验收施加要求。在这种情况下，中所示值的限制 图1 必须在产品验收测试之前确定。此类限值可通过各种方法确定，例如通过评估已知可接受的产品或应用适当的经验。 这些限制必须以执行产品测试的实体可以参考这些限制的方式记录，以确定测试产品是否符合这些限制。买方可能希望提供一份限值表，并在采购订单中包含类似以下内容的声明:“当根据ASTM标准进行测试时，产品。” B794 方法 __ , 程序 __ , 应满足所提供表格中的限制。”买方提供的此表可对以下所有值设定限制: 图1 或仅基于买方认为足以确保产品性能的价值的子集。 图1 报告结果的样本格式

1.1 This test method covers the effects of repeated insertion and withdrawal of separable electrical connectors which are harmful to the electrical performance of the connector. 1.2 This test method is limited to electrical connectors designed for use in applications where the current through any one connection in the connector does not exceed 5 A, and where the connector may be separated a number of times during the life of the connector. 1.3 This test method is limited to electrical connectors intended for use in air ambients where the operating temperature is less than 65°C. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use. 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 Materials for electrical connector contacts must satisfy a number of requirements in the areas of electrical, mechanical, and economic characteristics. The stability of electrical properties is one of the most important of these characteristics. Wear of contact surfaces may adversely affect these electrical properties, especially in designs where the contact surfaces are relatively thin coatings. This test method provides a means to compare various material systems on a basis relevant to their application in electrical connector contacts. 4.2 Repeated insertion and withdrawal of a connector may cause wear or other mechanical damage to the electrical contact surfaces, rendering those surfaces more susceptible to environmental degradation. This test method is intended to detect degradation of the electrical properties of the connector by such processes. 4.3 This test method describes procedures for conducting wear and durability testing of electrical connectors; the procedures produce quantitative results. These results may be used to compare the performance of different connector designs so that meaningful design choices can be made. Such results may also be used to compare the performance of a connector to a previously established standard to evaluate the quality of the samples under test. 4.4 The test results obtained from this test method are limited in their applicability to connector combinations that are equivalent in design and manufacture to those actually tested. 4.5 The user is cautioned that the conditions in this test should be compared to the conditions that the connector will experience in the intended application in order to determine the relevance of this test method to the particular needs of the user. For example, the environmental stress in this test method is less severe than certain industrial and marine environments and therefore test results are not directly applicable to predict the performance of product intended for use in such areas. 4.6 It is recommended that this test method be used in one of two ways. First, it may be used to evaluate and report the performance of a particular connector system. In such a case, it is appropriate to report the results in a table in the format shown in Fig. 1 and to state “The results shown in the table were obtained for (insert connector designation or description) when tested in accordance with ASTM Standard B794 , Method __ , Procedure __ .” Second, it may be used to impose requirements for acceptance of product. In this case, limits for the values shown in Fig. 1 must be established prior to product acceptance testing. Such limits may be established by various methods such as by evaluation of product which is known to be acceptable or by application of appropriate experience. These limits must be documented in a manner that the entity performing the product test can refer to the limits to determine if the test product conforms to such limits. A purchaser may wish to supply a table of limits and include on the purchase order a statement similar to: “The product, when tested in accordance with ASTM Standard B794 , Method __ , Procedure __ , shall meet the limits in the supplied table.” This table supplied by the purchaser may set limits on all of the values in Fig. 1 , or only on a subset of those values that the purchaser deems adequate to ensure the performance of the product. FIG. 1 Sample Format for Reporting Results