Gravity Casting Alloys
Eastern Alloys manufactures all zinc alloys used in the gravity casting industry. Gravity casting processes use gravity to pour and feed molten metal into a mold. The process is slower than die casting, and use lower cost tooling materials like sand, and graphite (unique to zinc alloys), but perfect for lower volume requirements of up to 20k parts per year. Special zinc alloys are used for this process which generally have a longer solidifcation range which allows sufficient time for gravity to feed the mold.
The Zinc/Aluminum alloy family (ZA alloys) have up to 27% aluminum which increases the solidification range of the alloys allowing for a longer solidification time and metal pouring/feeding to occur, and improves the casting's mechanical properties. The Slushcast and Kirksite alloys are used for other unique products as described below.
Recommended Downloads:
Zinc Gravity Casting Alloys:
Each Zinc alloy has specific benefits which are described below. To learn more about each individual alloy, please click on the zinc die casting alloy of interest, review the recommended downloads (above), or click here for an advanced search by property.