4047 & 4032 Aluminum Silicon Brazing Alloy
Eagle Alloys Corporation (EAC) is the leading global supplier of 4047 Aluminum Alloy and 4032 Aluminum Alloy in castings, forgings, billets, foil, fin, coil, ribbon, strip, sheet, plate, wire, rod, bar, tubing, rings, blanks, and custom sizes. A wide variety of sizes are available from stock with same or next day shipping. If Eagle Alloys does not have your exact requirement in stock, we can offer competitive pricing with short lead times. Below are most of EAC common stock sizes available for immediate shipping.
Eagle Alloys Corporation is an ISO Certified Corporation and have been supply the highest quality Aluminum for over 35 years.
Specifications & Applications
How is Aluminum Used?
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.
We recommend the use of 4032 aluminum alloy for covers larger than 3” because the 4032 alloys has better creep characteristics than 4047 aluminum when material is stressed at temperature above 80 degree C.
4032 Aluminum may be viewed as either a heat treatable type 4047 or a laser weldable type 6061. The 4032 material compositions contain 12.2% silicon to provide welding characteristics. In addition, magnesium, nickel, and copper content allow the material to be heat treated to yield strength levels comparable to 6061-T6.
The laser welding characteristics of 4047 and 4032 aluminum alloys are similar and the laser weld schedules may effectively be interchanged.
We will be glad to answer any questions regarding 4047 and 4032 Aluminum.
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