Zinc Zamak 3

Zamak 3 is the world's most widely used zinc alloy for die casting and precision CNC prototyping. Known for its excellent balance of physical and mechanical properties, it offers superior dimensional stability, high impact strength, and exceptional finishability. At Jucheng Precision, we specialize in both the functional CNC prototyping of Zamak 3 from solid billets and high-precision secondary machining for die-cast parts. As an IATF 16949 certified manufacturer, we leverage high-speed CNC centers to deliver zinc components for the automotive and electronics industries that require tight tolerances, complex internal features, and premium surfaces ready for decorative plating.

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Zamak 3

Zamak 3 Machining Capabilities

Capacité Description technique Avantage Jucheng
Prototypage fonctionnel CNC machining solid Zamak 3 billets to simulate die-cast parts for fit and function testing before tooling. We provide accurate physical models that match the mechanical properties of final die-cast components, reducing development risk.
Opérations secondaires Precision post-machining of die-cast zinc parts, including boring, facing, and high-tolerance tapping. Our automated setups ensure high repeatability for large batches of automotive and electronic housings.
Perçage à grande vitesse Zamak 3 is highly machinable. We utilize high-speed spindles for rapid drilling of intricate hole patterns. Significantly reduces cycle times and costs for parts requiring multiple assembly points or fastening features.
Surface Prep for Plating Machining surfaces to Ra 0.8μm or better to ensure high-quality adhesion for Chrome or Nickel plating. Delivers “Class A” cosmetic surfaces for consumer hardware and luxury automotive trim.

Fabrication Guidelines for Zamak 3 Zinc Alloy

Soft Material Strategy:
Zamak 3 is non-abrasive and relatively soft. Conseil : We use sharp, uncoated carbide tools with high rake angles to prevent material smearing and ensure crisp exit edges.

Sensibilité au maintien en position :
Zinc is dense but can be more brittle than aluminum under high point loads. Conseil : We use custom soft jaws to distribute clamping pressure evenly, preventing deformation or cracking of thin-walled housing sections.

Coolant Usage:
While zinc can be machined dry, water-soluble coolant is recommended to keep the part cool and flush away chips. Conseil : This maintains dimensional stability and prevents the material from building up on the cutting edge.

Threading & Tapping:
Zamak 3 accepts threads excellently. Conseil : We use roll taps (forming taps) for smaller holes to create stronger threads without producing extra chips in blind holes.

Applications principales

Composants automobiles
Door lock housings, mirror brackets, and fuel system parts that require high dimensional stability and strength.

Électronique grand public
Shielding cans, connector housings, and internal frames that benefit from zinc’s excellent EMI/RFI shielding properties.

Hardware & Locks
Precision lock cylinders, handles, and decorative bathroom fixtures that will be polished and Chrome plated.

Machines industrielles
Small gears, pulleys, and complex levers where zinc’s self-lubricating properties reduce wear on moving parts.

Propriétés

Densité 6,60 g/cm³
Résistance à la traction 283 MPa
Limite d'élasticité 221 MPa
Dureté 82 HB (Brinell)
Allongement à la rupture 10%
Conductivité thermique 113 W/m-K
Conductivité électrique 27% IACS
Point de fusion 381 - 387 °C
Indice d'usinabilité Bon
Résistance à la corrosion Bon
Taille max. de pièce 2000 x 800 x 600 mm