This standard applies to the determination of cupping performance of metal plates and strips with a thickness of ≤ 4 mm at room temperature of 201 ° C. The test evaluates the ductility of the material by applying pressure until crazing occurs and measuring the depth of cupping. The specimen should be cut from the material with qualified Appearance, and the surface of the specimen should be kept intact during preparation. The test results can be used to evaluate the availability and adaptability of the material in the cold stamping process.