This standard specifies the principles, symbols, test equipment, samples, test procedures and test reports of repeated bending test methods for metallic materials. This standard applies to the determination of the plastic deformation capacity of metal sheets and strips with a thickness equal to or less than 3mm after repeated bending.
GB/T 235-1999 history
2013GB/T 235-2013 Metallic materials.Sheet and strip.Reverse bend test
1999GB/T 235-1999 Metallic materials--Sheet and strip 3mm thick or less--Reverse bend test