Zinc Die Castings
Why Zinc Alloys?
Zinc alloys are versatile engineering materials. No other alloy provides the combination of strength, toughness, rigidity, bearing performance, and economic castability. Precision, quality, and repeat performance are distinct zinc alloy advantages.
Zinc alloys offer high strengths (up to 60,000 p.s.i.) and superior elongation for strong designs and formability for bending, crimping and riveting operations.
Zinc alloys provide significantly higher impact resistance than that of cast aluminum, plastic, and grey cast iron.
Virtually any part configuration can be molded using zinc. High casting fluidity, regardless of part configuration, allows for thinner wall sections to be cast in zinc compared to other metals.
Zinc alloys are castable to closer tolerances than other metal or plastics. Thus reducing or eliminating secondary operations or machining. “Net Shape” or “Zero Machining” are major advantages of miniature zinc castings.
Zinc castings are readily polished, plated, painted, chromated or anodized for decorative and/or functional service.
LONG MOLD LIFE
Low casting temperatures result in less thermal shock and extended life for zinc die casting molds. Mold life can often be more than 10 times that of an aluminum injected mold.
CLEAN & RECYCLABLE
Zinc is among the cleanest melting materials available. Zinc metal is non-toxic. Scrap is a reusable resource which is efficiently recycled. Zinc alloys provide excellent strength and extreme fluidity allowing for thin walls and ready finish.
Only certified zinc alloys #2-#3-#5-#7 and ZA-8 are used, no re-melt is ever used.
To help keep part costs down, metal savers are always considered. Runner and gate details designed for each specific part help reduce scrap and keep runner waste to a minimum. Zinc castings are a very good replacement for stampings, screw machine parts, and multiple part assemblies which can often be molded as a single part.