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Zamak 3 (Zinc)
Material Type
Metal
Material Name
Zamak 3 (Zinc)
Alternative Names
AG40A | Zinc Alloy 3 | Z33520 | Mazak 3
Process Compatibility
CNC Milling, CNC Turning
introduction
Zamak 3 (Zinc) in CNC Machining
The most common alloy in the Zamak family is Zamak 3, which primarily consists of zinc with small amounts of aluminum, magnesium, and copper.
Zamak 3 has good machinability, allowing for efficient CNC machining processes. It can be turned, milled, drilled, and tapped relatively easily. We adjust cutting speeds and feeds depending on various factors, such as the specific CNC machine, tooling, and cutting conditions. We use a coolant or lubricant during machining to help dissipate heat and improve tool life. However, some CNC machining operations on Zamak 3 may be performed dry, depending on the specific requirements and machining setup.
Like many materials, Zamak 3 may experience dimensional changes during machining due to tool wear and thermal effects. Depending on the final application, post-machining treatments such as plating, coating, or polishing may be applied to enhance the surface properties of the Zamak 3 parts. Zamak 3 is widely used in die-casting processes to produce various components and products, such as automotive parts, electronic housings, and decorative items.
Properties
Properties Table of Zamak 3 (Zinc)
| MECHANICAL PROPERTIES | |
|---|---|
| Ultimate Tensile Strength | 230 MPa |
| Yield Strength | 215 MPa |
| Young's Modulus(Elasticity) | 96 GPa |
| Elongation at Break | 10 % |
| Physical Properties | |
| Corrosion Resistance | Good |
| Magnetism | Non-magnetic |
| UV Resistance | Moderate |
| Weldability | Good |
| Thermal Properties | |
| Maximum Service Temperature | 150°C |
| Thermal Expansion Coefficient | 27 x 10^-6/°C |
| Thermal Conductivity | 113 W/(m·°C) |
| Electrical Properties | |
| Electrical Resistivity | 7.0 x 10^-7 Ωm |
| ESD Safety | No |
TECHNOLOGY OVERVIEW
Basic Knowledge of Zamak 3 (Zinc)
What is Zamak 3 (Zinc)?
Zamak 3 is a type of alloy that primarily consists of zinc, with additional elements added to enhance its properties. The name "Zamak" is derived from the German words "Zink" (zinc), "Aluminium" (aluminum), "Magnesium," and "Kupfer" (copper).
Zamak alloys are known for their excellent castability, dimensional stability, and corrosion resistance. The number following "Zamak" denotes the predominant metal in the alloy. Zinc makes up the majority of the alloy (around 95.8%). Aluminum is added to improve the alloy's strength and hardness. Magnesium enhances the alloy's casting properties. Copper is included to increase strength and corrosion resistance.
Advantages of Zamak 3 (Zinc)
Cost-effective
High strength and hardness
Excellent castability
Good dimensional stability
Low melting point
Corrosion resistance
Recyclable
Wide range of finishes
High impact strength
Precision casting
Applications of Zamak 3 (Zinc)
Automotive components
Door handles
Electrical connectors
Belt buckles
Cabinet hardware
Faucets and plumbing fixtures
Decorative items
Nameplates and emblems
Toy parts
Zipper sliders
FAQ
Machining Zamak 3 (Zinc) Buying FAQ
Generally, aluminum alloys tend to have higher tensile strength, while Zamak 3 is known for its excellent casting properties.
It doesn't rust like iron, but it may develop a white corrosion product known as white rust or zinc oxide. To enhance its corrosion resistance, surface coatings such as plating or painting may be applied.
Zamak 3 itself is not inherently waterproof, as it can be affected by water exposure over time. The alloy's resistance to water depends on environmental conditions, temperature, and the presence of corrosive agents. If water exposure is a concern, appropriate surface treatments or coatings can be applied to improve the material's resistance to moisture.
Zamak 3 has limitations when it comes to welding. Traditional welding methods like arc welding are not typically recommended due to the material's composition, which may result in structural issues and reduced mechanical properties. Instead, other joining methods, such as adhesive bonding or mechanical fastening, are often preferred. If welding is necessary, specialized processes like die-casting welding or laser welding may be considered, but they require expertise to achieve satisfactory results.
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Aluminum
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