本SAE推荐规程涵盖了测试和评估表面涂层抗砾石冲击碎裂性的实验室程序。该测试旨在再现砾石或其他介质撞击汽车外露油漆或涂层表面的效果。测试的具体目的是评估平板测试板上的有机表面涂层或系统；然而，如果根据原始测试程序和评级系统所暗示的限制和意图来解释结果，则可以将这种类型的测试扩展到成品零件或其他类型的材料，例如阳极氧化铝或电镀塑料。 本文件可能涉及危险材料、操作和设备。本文件并非旨在解决与其使用相关的所有安全问题。使用本文件的人有责任在使用前咨询和建立安全和健康实践，并确定监管限制的适用性。 除非另有说明，否则所有尺寸均为标称尺寸。

This SAE Recommended Practice covers a laboratory procedure for testing and evaluating the resistance of surface coating to chipping by gravel impact. The test is designed to reproduce the effect of gravel or other media striking exposed paint or coated surfaces of an automobile. The specific intent of the test is to evaluate organic surface coatings or systems on flat test panels; however, it may be possible to extend this type of testing to finished parts or other types of materials such as anodized aluminum or plated plastics if the results are interpreted with respect to the limitations and intent implied by the original testing procedures and rating system. This document may involve hazardous materials, operations, and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this document to consult and establish safety and health practices and determine the applicability of regulatory limitations prior to use. All dimensions are nominal unless otherwise noted.