Aluminum - Our capacity for shearing and forming is .032 thru .25 with Mig & Tig welding capabilities. Aluminum 3003 Definition – General purpose alloy for moderate strength applications. 20% strength increase over 1100 with same good forming, weld ability and corrosion resistance. Used for general sheet metal work. Aluminized Definition – A steel sheet coated on both sides with aluminum-silicon alloy. Has the appearance of aluminum with the strength of steel. More resistant to heat than either uncoated steel or solid aluminum. Withstands temperatures to 1250 degrees F.