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  • Zinc
    ZA (zinc-aluminum) casting alloys. For pressure die casting, the established zinc alloys are the No. 3, 5, and 7 Zamak alloys. As die castings, they have good general-purpose
  • Aluminum
    Though light in weight, commercially pure aluminum has a tensile strength of about 13,000 psi. Cold working the metal approximately doubles its strength. In other attempts to increase strength, aluminum is alloyed with elements such as manganese, silicon, copper, magnesium, or zinc. The alloys can
  • Cost-conscious molding
    Permanent graphite molds and a knowledgeable metal-casting house can help designers of zinc-aluminum-alloy parts go from art to part in less than six weeks. Edited by Jean M. Hoffman Most ZA-12 (zinc-aluminum) alloy parts need little or no secondary machining. However, when necessary, a shop
  • Not your average carbon copy
    Graphite permanent molding is a niche process used for building high-precision zinc-aluminum alloy parts. Assortment of parts molded in graphite permanent molds. Part being removed from graphite permanent mold showing attached runners and gates. Air-traffic control trackball housing is cast
  • Soldering Processes
    zinc/5% aluminum solder should be used. Tin-lead-antimony alloys are used for the same types of applications as tin-lead solders. They are not recommended for use on aluminum, zinc, or galvanized steel. Addition of antimony (up to a maximum of 6%) in place of some of the tin improves strength
  • Tin
    can be cast, rolled, extruded, or atomized. Because pure tin is too weak to be used alone for most mechanical applications, it is usually alloyed with elements such as copper, antimony, lead, bismuth, and zinc. Tin and its alloys are cast using most conventional techniques, including gravity die
  • Magnesium
    improve properties. Cast magnesium alloys are dimensionally stable to about 200 F. Some cast magnesium-aluminum-zinc alloys may undergo permanent growth if used above that temperature for long periods. Permanent-mold castings are as strong as sand castings, and they generally provide closer dimensional
  • Faster, more predictable die casting
    Alloys of zinc and magnesium sport a wide range of physical and mechanical properties. The result is enormous flexibility in selecting die-casting materials for small, complex components. Designers have a broad latitude of materials to choose from for small die-cast components. Each of five zinc

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