4047 Aluminum Alloy

4047 aluminum (also known as alloy 4047 and AL4047) 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. Other applications include welding filler wires, leak tight joints, housing requirements, window frames, liners such as laser welded covers for microwave integrated circuits, and other similar devices.

At Rickard Specialty Metals, we have 30 years of experience supplying 4047 aluminum sheet, forgings and more to your custom measurements. Our forging process includes open die forgings, ring rolling and more. See below for a list of common forged shapes we offer, including 4047 aluminum bar (round bar and flat bar) and more.