It's all about service — General Foundry Service

Zinc Aluminum Alloy Castings

Please use this PDF as a guideline for helping you find the right alloy.

Zinc Aluminum Alloys: ZA8, ZA12 & ZA27

Zinc aluminum alloys have up to 2.25x the density of aluminum alloys, so they are very heavy. ZA alloys are self-aging alloys (do not require heat treating) and can have increased strength, hardness and wear properties compared to aluminum alloys. Some ZA alloys plate nicer than 356, but we do not recommend plating for cosmetics. Many of the applications we see are for ballast (low center of gravity) and/or strength.