Zamak 3

Zamak 3 is one of the most widely used Zamak zinc alloys, consisting primarily of zinc and aluminum with a small amount of magnesium. It offers excellent die-casting performance, dimensional stability, and surface-finishing capability, making it ideal for complex, thin-wall, and dimensionally accurate components.

Appearance & Properties

Color: Silver-gray to bright silver-gray

Density: Approx. 6.6 g/cm³

Tensile Strength: Approx. 280 MPa, depending on condition and manufacturing process

Corrosion Resistance: Moderate to Good

Machinability: Good

Die Castability: Excellent

Dimensional Stability: Excellent

Surface Quality: Excellent

Magnetism: Non-magnetic

Surface Finishes: Polishing, electroplating, painting, powder coating, passivation, etc.

Typical Applications

Zamak 3 is widely used in automotive, electrical and electronics, home appliances, hardware, furniture, locks, and consumer products.

Typical parts include housings, connectors, handles, knobs, lock components, brackets, decorative parts, and various precision die-cast components.

Advantages

• Excellent die-casting and flow characteristics

• Good dimensional stability

• Suitable for complex and thin-wall components

• Excellent surface quality for plating and coating

• Good balance of performance and cost

Limitations

• Lower strength and hardness than Zamak 2 and Zamak 5

• Not suitable for prolonged high-temperature service

• Relatively high density for lightweight applications

• Limited corrosion resistance when left unprotected