Clad Sheet Aluminum Alloy

The trade name of this aluminum laminate as originated by the aluminum company of america is alcad.

Clad sheet aluminum alloy.

An extremely thin sheet of pure aluminum laminated onto each side of an aluminum alloy sheet improves the corrosion resistance with little impairment of strength. Anodized 5005 sheet for architectural applications and 5182. It has a melting point of about 500 degrees celsius or 932 degrees fahrenheit. Cladding is often achieved by extruding two metals through a die as well as pressing or rolling sheets together under high pressure.

Aluminium brazing sheet is manufactured by roll bonding techniques to clad a core alloy ingot on one side or both sides with a low melting alsi alloy. The united states mint uses cladding to manufacture coins from different metals. The fuselages of civil aircraft are for the most part made from 2024 alloy sheet clad on either surface with a low composition aluminum alloy a 1050 or 1070 alloy for example. Alclad is a corrosion resistant aluminium sheet formed from high purity aluminium surface layers metallurgically bonded rolled onto to high strength aluminium alloy core material.

They re generally clad with a high purity alloy or a 6xxx series alloy to greatly resist corrosion. From this trade name the adjective clad and the verb cladding have been derived. Cladding is the bonding together of dissimilar metals it is different from fusion welding or gluing as a method to fasten the metals together. As an alternative one side can be clad with a non braze alloy e g.

Depending on the desired final properties the core is either homogenized or not before the cladding. To the thickness of the core sheet typically represent between 1 and 15 of the total thickness.