Zinc alloy characteristics:
- High strength and hardness
- Excellent electrical conductivity
- High thermal conductivity
- Low cost raw material
- High dimensional accuracy and stability
- Excellent thin wall capability
- Ability to cold form, which eases joining
- High quality finishing characteristics
- Outstanding corrosion resistance
- Full recyclability
- Zinc Creep
Zinc, although heavier than other metals, can be a superior option when it comes to strength and durability. And it can be more a cost effective option too. Zinc has a higher melting point than other metals — which means it uses less energy during the manufacturing process. Many manufacturers find die casting in zinc to be the ideal alternative to machined, pressed, stamped, and fabricated components.
Applications for Zinc:
- Complex net-shaped zinc housings, with precise thin walls offer excellent electrical performance and shielding properties
- Our proprietary multi-slide die casting process and superior thin-wall capabilities make us the foremost supplier of zinc components for broad range of consumer electronic devices
- The castability of zinc, its wear resistance, and structural integrity make it perfect for the creation of the multi-faceted, highly complex shapes used in automotive safety and electronics industry
Zinc Alloy 2, also known as Kirksite or Zamak 2 (ASTM AC43A), is the highest strength and hardness of the Zamak family.
Zamak 3 (ASTM AG40A), or Zinc Alloy 3, is the most widely used zinc alloy in North America and is usually the first choice when considering zinc for die casting for a number of reasons.
Zamak 5 (ASTM AC41A) or Zinc Alloy 5, is the most widely used zinc alloy in Europe.
Zamak 7 (ASTM AG40B), or Zinc Alloy 7, is a modification of Zamak 3. It is a high-purity alloy containing lower magnesium content and has a tighter impurities specification. This results in improved casting fluidity, ductility and surface finish.
ZA-8, or zinc aluminum alloy, contains significantly more aluminum than the Zamak group of alloys. ZA-8 contains approximately 8.4% aluminum and is the only ZA alloy that can be hot-chamber die cast, an important consideration when selecting a material for a component.
ACuZinc5 is an alloy researched and developed by General Motors. It is best known for its creep performance, surface hardness, and lubricity.
EZAC is a hot-chamber zinc die casting alloy with superior creep resistance, high yield strength, and high hardness.
ZA 27 - Zinc Aluminum
ZA-27, or zinc aluminum alloy, contains significantly more aluminum than the Zamak group of alloys. The number 27 represents the approximate percentage of aluminum.
|Zinc Casting Metals|
|%||Zamak 2||Zamak 3||Zamak 5||Zamak 7||ZA 8||ACuZinc5||EZAC||ZA 27 - Zinc Aluminum|
** For comparison only.