3003 Industrial-Grade Aluminum Honeycomb 1,light-weight,hig strength 2,corrosion ... resistance Product DescriptionMade of 3003 AL alloy, which contains 98%Aluminum, 1%Magnesium, some Ferrum and Silicon. After backfire settlement ... ,aluminum honeycomb and honeycomb composites with phenolic prepreg for enterprises ,which produce high-speed,light rail , yachts and vessels. industrial-grade aluminum ...