ISO 1519:2011规定了用于评估油漆、清漆或相关产品涂层在标准条件下绕圆柱形心轴弯曲时对金属或塑料基材开裂和/或脱离的抗性的经验测试程序。 对于多涂层系统，可以单独测试每个涂层，也可以测试整个系统。 可以执行指定的方法 作为“通过/失败”测试，通过使用单个指定尺寸的心轴进行测试，以评估是否符合特定要求； 或通过使用连续较小的心轴重复该过程以确定涂层在其上破裂和/或变得与基底分离的第一心轴的直径。 规定了两种类型的设备，类型1适用于厚度高达0.3 mm的测试面板，类型2适用于厚度高达1.0 mm的测试面板。已经发现两种类型的设备在相同的涂层下给出相似的结果，但是通常只有一种设备将用于测试给定的产品。

ISO 1519:2011 specifies an empirical test procedure for assessing the resistance of a coating of paint, varnish or related product to cracking and/or detachment from a metal or plastics substrate when subjected to bending round a cylindrical mandrel under standard conditions. For a multi-coat system, each coat can be tested separately or the complete system can be tested. The method specified can be carried out

• either as a “pass/fail” test, by carrying out the test with a single specified size of mandrel, to assess compliance with a particular requirement;
• or by repeating the procedure using successively smaller mandrels to determine the diameter of the first mandrel over which the coating cracks and/or becomes detached from the substrate.

Two types of apparatus are specified, type 1 being appropriate for use on test panels of thickness up to 0,3 mm, and type 2 for use on test panels of thickness up to 1,0 mm. Both types of apparatus have been found to give similar results with the same coating, but normally only one will be used for testing a given product.