We pearl overseas offers copper clad aluminum sheet in customize size, Which is offered in 80/20 ratio, We manufacture sheet together with washer, Aluminum clad copper al/cu or copper clad aluminum cu/al composite metals have been commonly utilized for over 20 years. These mature and well tested clad metal systems find application industrially in an assortment of applications. The inherent properties and behavior of both copper and aluminum combine to provide unique performance advantages. Copper s electrical and thermal conductivity along with its solderability make it a critical industrial metal. The characteristics of aluminum also provide above average thermal and low density, Electrical conductivity and a stable oxide layercopper clad aluminum is produced with copper on one or both sides. The most popular ratio for single, Side material is 15/85 15% copper, 85% aluminum by thickness, Although other ratios from 5/95 to 50/50 can be produced. The most common ratio for materials with copper on both sides is 10/80/10.