The Clad sheet is made roll-bonding process of the one or more material with the different property. Good formability is an essential property in order to deform a clad metal sheet to a part or component. In this study, the mechanical properties and adhesion of a STS-Al clad sheet are investigated. We conducted experiment about the effects of experimental variables in the blanking process through the clearance between the punch and die, punch velocity and according to direction of the clad sheet when measuring interfacial adhesion of clad sheet.