Custom Zinc Die Casting Services
We specialize in custom zinc die casting and OEM zinc alloy component production. Using stable hot-chamber die casting equipment and processes, we supply high-precision, high-density zinc die cast parts, with secondary CNC machining and multiple surface treatment options. From DFM design to mass production, we provide one-stop zinc casting solutions for worldwide industrial buyers.
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Our Die Casting Factory & Production Equipment
As a top China zinc die casting manufacturer, ZH Precision adopts full in-house independent production with advanced hot-chamber die casting equipment. We complete all processes internally from prototype development to high-volume mass production. Rigorous quality control guarantees stable precision and uniform batch quality, providing reliable long-term supply for global OEM partners.
Zinc Die Casting with ZH Precision
ZH Precision offers professional custom zinc die casting for alloy component development and mass production. Our standardized workflow covers DFM analysis, custom mold fabrication, hot-chamber high-pressure casting, deburring, secondary machining and full quality inspection. We maintain strict tolerance and surface finish control to supply high-precision zinc die cast parts that meet industrial specifications.
We have long-term experience in manufacturing various zinc die cast parts, including electronic housings, communication structures, hardware fasteners, automotive components, sanitary fittings, instrument brackets, decorative parts and mechanical accessories. Standard secondary processing and professional surface finishing improve component durability, corrosion resistance and consistent batch quality for global OEM and ODM projects.
Secondary Operations & Precision CNC Machining
Secondary Processing
Professional deflashing, trimming and deburring prepare zinc castings for precise machining and assembly.
CNC Precision Machining
Precision milling, drilling and tapping achieve tight-tolerance zinc die cast components consistently.
Surface Treatment
Versatile surface finishes improve corrosion resistance, wear performance and overall appearance.
Quality Inspection
Dimensional and visual inspections verify compliance, consistency and reliable casting quality.
Zinc Die Casting Capabilities
Our zinc die casting capabilities support complex, tight-tolerance components in accordance with ISO 8062 and ASTM B86 standards. Through precision tooling and controlled processes, we deliver reliable zinc die cast parts with excellent dimensional accuracy and repeatability for automotive, electronics and industrial OEM applications.
| Description | Specification |
|---|---|
| Maximum Part Weight | 0.4 kg |
| Minimum Part Weight | 0.005 kg |
| Minimum Part Size | 5 mm × 3 mm × 2 mm |
| Maximum Part Size | 500 mm × 350 mm × 100 mm |
| Minimum Wall Thickness | 0.4 mm |
| Maximum Wall Thickness | 5 mm |
| Dimensional Tolerance | ±0.03 mm – ±0.10 mm |
| Sample Lead Time | 3–5 working days |
| Mass Production Lead Time | 25–30 working days |
| Shipping | Global shipping options available |
Free Aluminum Die Casting Consultation
Share your design files, and we will offer optimized manufacturing plans, reasonable pricing and reliable production suggestions.
Zinc Die-Casting Materials
ZH Precision offers a range of zinc die casting alloys, including Zamak 3, 5, 7, ZA-8/27, ACuZinc5 and EZAC, supporting applications requiring strength, dimensional stability and corrosion resistance. All materials comply with RoHS, REACH and ELV requirements, with certifications available upon request.
Zamak 3
The most widely used general-purpose zinc alloy, Zamak 3 offers excellent castability, dimensional stability and balanced mechanical properties. It is ideal for complex, tight-tolerance components requiring reliable performance, and is widely used for electronic housings, connectors, hardware and consumer products.
| Tensile Strength | Yield Strength | Elongation | Hardness | Density | Corrosion Resistance | Castability |
|---|---|---|---|---|---|---|
| 285 MPa | 210 MPa | 10.0 % | 82 HB | 6.6 g/cm³ | Good | Excellent |
Zamak 5
With higher copper content than Zamak 3, Zamak 5 provides improved strength, hardness and wear resistance while maintaining excellent castability. It is well suited for structural and load-bearing components, including automotive parts, mechanical hardware and industrial assemblies.
| Tensile Strength | Yield Strength | Elongation | Hardness | Density | Corrosion Resistance | Casting |
|---|---|---|---|---|---|---|
| 330 MPa | 250 MPa | 7.0 % | 91 HB | 6.7 g/cm³ | Good | Very Good |
Zamak 7
A high-purity zinc alloy known for superior fluidity and surface finish, Zamak 7 is ideal for thin-wall parts and precision components requiring intricate detail. Its excellent plating performance makes it suitable for decorative, electronic and high-precision applications.
| Tensile Strength | Yield Strength | Elongation | Hardness | Density | Corrosion Resistance | Casting |
|---|---|---|---|---|---|---|
| 300 MPa | 220 MPa | 8.0 % | 85 HB | 6.6 g/cm³ | Excellent | Premium |
ZA-8
ZA-8 offers higher strength and hardness than standard Zamak alloys, along with good creep resistance and bearing performance. It is commonly used for demanding components requiring enhanced durability, dimensional stability and reliable performance under elevated operating conditions.
| Tensile Strength | Yield Strength | Elongation | Hardness | Density | Corrosion Resistance | Casting |
|---|---|---|---|---|---|---|
| 370 MPa | 280 MPa | 4.5 % | 105 HB | 6.3 g/cm³ | Fair | Good |
Surface Finishes for Zinc Die Casting Parts
Zinc die castings provide excellent as-cast surface smoothness and fine texture. High fluidity zinc alloys and polished precision molds ensure low roughness and minimal casting defects. The smooth base surface works perfectly with electroplating, spraying and other finishes for stable quality and premium appearance.
Deburring
Deburring removes flash and sharp edges to improve part fit, safety and surface consistency.
Electroplating
Electroplating improves corrosion resistance, wear performance and decorative appearance for zinc parts.
Sand Blasting
Sand blasting creates a uniform matte texture while preparing surfaces for coating adhesion.
Tumbling
Tumbling smooths edges and removes burrs to improve surface consistency and part appearance.
Brushed Finish
Brushed finishing creates linear metal textures while reducing the visibility of surface marks.
Polishing
Polishing enhances surface smoothness and appearance for decorative and precision zinc components.
Chromate Conversion
Chromate conversion improves corrosion protection while enhancing adhesion for painting and coating.
Powder Coating
Powder coating provides durable protection with strong wear resistance and lasting surface performance.
Zinc Die Casting Process Control
This case demonstrates the production of a zinc alloy connector housing under tightly controlled die casting conditions, ensuring stable process parameters, consistent cavity filling and repeatable dimensional performance. Controlled temperature, pressure and cycle settings help reduce casting defects and maintain reliable quality for thin-wall connector components used in electronic and industrial applications.
Zinc Alloy Connector Housing
Control Focus:
Key production parameters such as melt temperature, injection pressure, filling speed and cycle time are tightly controlled and continuously monitored. This ensures stable metal flow during cavity filling, uniform wall thickness distribution and consistent dimensional accuracy across production batches.
Process Technology:
Hot-chamber die casting is used to support high-efficiency production of complex zinc components. Controlled mold temperature, optimized gating and runner design and stable injection behavior help reduce turbulence and porosity. Combined with automated trimming and in-process inspection, the process ensures repeatable production quality and stable surface condition.
What Is Zinc Die Casting?
Zinc die casting is a high-pressure metal forming process in which molten zinc alloy is injected into precision steel dies to produce complex, near-net-shape components. The low melting point of zinc enables the use of hot-chamber die casting systems, resulting in fast cycle times, tight dimensional tolerances and good surface finish.
Common zinc alloys such as Zamak 3, Zamak 5 and ZA-8 provide high strength, good ductility and corrosion resistance under normal environmental conditions. These properties make zinc die cast parts well suited for connector housings, electronic enclosures, automotive components and other industrial applications. Secondary operations such as CNC machining, plating, powder coating and chromate conversion further improve dimensional accuracy, surface performance and appearance for end-use requirements.
When to Select Zinc Die Casting for Your Project
Zinc die casting is ideal for cost-efficient high-volume production requiring stable dimensional accuracy and repeatable quality. It is well suited for components with complex geometries, thin walls and fine structural details used in electronics, automotive and industrial applications.
This process is recommended when parts require tight tolerances, smooth surface finish and multiple finishing options such as plating or coating. It offers a strong balance of mechanical performance, production efficiency and cost efficiency, making it suitable for mid- to high-volume precision metal components.
Zinc Die Casting Advantages
1.High Dimensional Accuracy: Maintains tight tolerances and stable product consistency in high-volume production.
2.Complex Shape Capability: Excellent alloy fluidity supports thin walls fine details and intricate structural features.
3.Cost-Efficient Mass Production: Short cycle times and high output reduce unit costs for large batch orders.
4.Superior Surface Quality: Delivers smooth as-cast surfaces and adapts to plating coating and other surface treatments.
5.Reliable Mechanical Performance: Offers high hardness impact resistance and structural durability for industrial applications.
5.Good Production Stability: Mature hot-chamber process ensures steady output and reliable on-time delivery.
Frequently Asked Questions
A: Zinc alloy features higher fluidity, thinner wall forming capacity and better electromagnetic shielding performance. It delivers higher dimensional accuracy and richer surface treatment options, more suitable for connector housings, electronic shells and precision small parts compared with aluminum die casting.
A: All zinc alloy materials comply with RoHS and REACH standards. Mass production parts support aging test, salt spray test and electrical performance testing. We provide complete material reports and batch quality documents to meet automotive, medical and industrial equipment supply chain audit requirements.
A: High-quality Zamak series zinc alloys own high hardness, impact resistance and anti-deformation ability. With qualified surface treatment, parts can maintain stable performance in high frequency assembly, indoor and weak corrosive environments, and support long-term batch matching use.
A: We provide one-stop services including mold customization, structural optimization design, CNC finishing, tapping and drilling. Complex undercuts, mounting holes and positioning structures can be formed in one piece to reduce assembly processes and comprehensive production costs.
A: With hot-chamber high-efficiency production, zinc die casting has short molding cycles and low scrap rate. Although the mold has initial cost, the unit price drops significantly in mass production. It is the most cost-effective solution instead of CNC processing for medium to high volume precision parts.