Animesh Talapatra et.al made an analysis to find out the cupping index of different sheet metals in different thickness using ERICHSEN cupping testing machine (Model ET-20, least count of 0.01 mm) in metal forming operations (stretching). In the ERICHSEN cupping test, the sheet metal test piece is clamped under a pressure of 1000 ± 100 kgf between a blank holder and a die. This test is a type of stamping test, which uses a polished steel ball or a spherical punch of a standard size mounted on a plunger to penetrate into the specimen with a constant force until the specimen produces first crack. The measure of the length of penetration in mm, indicates the ERICHSEN Number which gives a measure of the ductility of the sheet in the plane of drawing under biaxial stress conditions. The ERICHSEN no. is the penetration of the die given in millimeters to the nearest decimal point, up to the point at which cracks occur (end point).Finally NDT method was used to find out formability characteristics of different sheet metals.