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  • David Cheng

Types of Zinc Alloy

Updated: Nov 17, 2023

Zamak alloys are a family of zinc-copper alloys that also contain aluminum and magnesium as alloying elements. There are several types of Zamak alloys, each with unique properties and specialties. Here are the common types of Zamak alloys and their specialties:

  1. Zamak 2

Zamak 2 is the most commonly used Zamak alloy. It contains a higher amount of copper than other Zamak alloys, which gives it a higher tensile strength and better wear resistance. It is typically used for die-castings that require high strength and dimensional stability.

Specialty: Zamak 2 is known for its excellent machinability and can be easily machined to create complex shapes and features.

  1. Zamak 3

Zamak 3 is the most widely used Zamak alloy due to its excellent combination of strength, ductility, and impact resistance. It is used in a wide range of applications, including automotive parts, consumer goods, and hardware.

Specialty: Zamak 3 is known for its excellent finishing properties and can be easily plated or coated to enhance its corrosion resistance.

  1. Zamak 5

Zamak 5 contains a higher amount of magnesium than other Zamak alloys, which gives it better strength and hardness. It is typically used in applications where high-stress levels are present, such as automotive and electrical components.

Specialty: Zamak 5 is known for its excellent castability and can be cast into thin-walled components with complex geometries.

  1. Zamak 7

Zamak 7 is a specialized Zamak alloy that contains less copper than other Zamak alloys. It is typically used in applications where excellent dimensional stability is required, such as electrical connectors and switches.

Specialty: Zamak 7 is known for its excellent corrosion resistance and can withstand exposure to harsh environments for extended periods.

In conclusion, choosing the right type of Zamak alloy for your application requires an understanding of the specific properties and specialties of each alloy. Whether you need high strength, excellent finishing properties, or superior castability, there is a Zamak alloy that can meet your requirements.

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