4047 Aluminum Foil Supplier

Eagle Alloys Corporation (EAC) is the leading global supplier of foil in 4047 Aluminum. EAC stocks a wide variety of foil sizes in 4047 Aluminum and can supply custom foil sizes with short lead times.

Eagle Alloys Corporation can supply foil in 4047 Aluminum from 0.003” Thk up to 0.1875” Thk.  For thicker material EAC can supply sheet and plate up to 4” Thk.  If you do not see your foil size listed below, please contact our courteous sales team to assist you. Please view or print our full 4047 stock list for our complete stock sizes and capabilities.

4047 Aluminum foil is used in a variety of applications including Liners, Laser Weld Covers for Microwave Integrated Circuits and other similar devices, Housing, joining material within the Aluminum family of alloys, Automotive, Engine Blocks, Welding Filler Wires, leak tight joints.

4047 Aluminum foil is typically supplied to meet the requirements of AMS 4185, QQ-B-365, HMS 2273, Mil-B-20148, Alloy 718, BALSi4, AWS5.8, UNS A94047, ASTM-B-247, AA4047, EN AW-4047A, and EN AW-Al Si12(A).

Laser welded covers for Microwave Integrated Circuits and similar devices have been fabricated from 4047 aluminum alloy due to the high silicon content (11.5%) which provides ductile welds with most common aluminum housing alloys.  Covers with dimensions of 2” in length and smaller are best fabricated from 4047 aluminum alloy.

4047 Aluminum Alloy is an aluminum silicon brazing or filler alloy with good corrosion resistance. The main difference between alloy 4047 and it’s AL4043 counterpart is its higher silicon content. With 11-13% silicon, AL 4047 is generally used when high fluidity and reduced shrinkage and hot cracking is needed for specific repairs or manufacturing. Additionally, 4047 is suitable at elevated temperatures making it particularly useful in the automotive industry for parts and engine blocks.