Product Code:SAE AMS4051 Title:Aluminum Alloy, Sheet and Plate, Alclad, 6.8Zn - 2.8Mg - 2.0Cu - 0.23Cr (Alclad 7178-0), Annealed (Cancelled Feb 2005) Issuing Committee:Ams D Nonferrous Alloys Committee Scope:This specification covers an aluminum alloy in the form of sheet and plate.