SeattleAluminum Alloys - Brass Bronze - Gray Iron Castings - Seattle Foundry Welcome To Ballard Brass & Aluminum, Inc. Aluminum Castings and Alloys ? Brass Bronze Castings ? Gray Iron Castings A leading Seattle foundry producing the very best in aluminum, brass-bronze, and gray iron castings. Specialty corrosion resistant products to the marine and fishing industries. Making quality aluminum, brass bronze and gray iron sand castings has been described as an art form for many years. After over eighty years of making non-ferrous castings for manufacturers of all types of equipment and machinery,