Zinc Alloys are easy to cast alloys composed primarily of elemental zinc. These alloys contain approximately 4% aluminum, which provides tensile and impact stregnth. The alloys that we use bear the designations #3, #5 and #7 zinc. Also known as Zamak alloys, their numbers increase with their inhierant purity. Zinc is approximately 2.4 times as dense that aluminum, which makes it a good choice when extra weight is required in the application. It can also be run with thinner walls that aluminum castings.
The most popular and the least expensive of zinc alloys, this alloy achieves most of the desireable benefits of zinc in die casting.
Higher tensile and impact stregnth than #3 Zinc but with decreased ductility, this alloy is specified when these characteristics are preferred.
The highest purity alloy that we run, #7 Zinc again has decreased ductility, but with the highest tensile and impact stregnths of the zinc alloys that we run. The liquid flow characteristics of #7 may more flexibility in design of zinc die castings. #7 is the most expensive zinc alloy that we run.