Minimum sheet size available is 2 x 4.
Clad aluminium sheet.
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.
Order by part number.
2024t3 alclad aluminum sheet aluminum alloy sheet is sold in the thicknesses and sheet sizes shown in the table.
Alclad is a trademark of alcoa but the term is also used generically.
As with alloy 2024 alloy 7075 is available in bare form or in clad alclad to offer even further protection from corrosion.
Not all aircraft sheet aluminum is clad especially those alloy sheets from which small brackets gussets and fittings are made.
It has a melting point of about 500 degrees celsius or 932 degrees fahrenheit.
Pure aluminum has considerable corrosion resistance compared to aluminum alloys.
Corrosion resistance and machinability are rated as fair though the addition of chromium provides good stress corrosion cracking resistance in 7075 aluminum sheet products.
But it has little or no structural strength.
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.