Die Casting Services
Manufacturer of die-cast parts for aluminum, magnesium and zinc alloys
- We deliver precision aluminum, magnesium and zinc alloy die‑casting solutions, covering mold design & fabrication, high‑pressure, vacuum, low‑pressure and sand casting, plus full secondary services: CNC machining, grinding, polishing, powder coating and anodizing.
- Equipped with 10+ die‑casting machines (100‑4000T) and 70 units of 3‑/4‑/5‑axis CNC equipment, we handle low‑to‑high‑volume production for parts up to 55 kg and 2500 mm long. Having completed over 2000 die‑casting molds, we support automotive, new‑energy, 5G, heat‑sink and LED industries.
- We offer free DFM & mold‑flow analysis and design optimization to cut your costs. Rapid tooling takes 12 working days; production tooling up to 20 days. Strict quality control includes QA inspection, X‑ray scanning, material spectroscopy and leak testing for consistent component performance.
Our Die Casting Capabilities
- Quick mold
- Our core team is equipped with a full range of high-precision mold machining equipment, boasting over a decade of design and manufacturing experience, and specializing in the development of complex die-casting tools.
- High-pressure die casting
- Gases are evacuated from the mold cavity, allowing the molten metal to solidify under vacuum conditions. This significantly reduces porosity, resulting in castings with high density that are suitable for heat treatment and welding. This process is suitable for automotive structural components, safety components, and parts with high airtightness requirements.
- Design Simulation and DFM Analysis
- We use CAD/CAM systems to perform high-precision mold flow simulations, proactively eliminating casting defects. We also incorporate DFM evaluations of wall thickness, draft angles, gating systems, and airtightness to ensure the product is suitable for die-casting production.
- Low-pressure die casting
- The metal is heated to a state where solid and liquid phases coexist and is injected into the mold at low speed, resulting in smooth filling and minimal shrinkage. The mechanical properties approach those of forged parts. This process is suitable for lightweight automotive structural components, high-strength and high-toughness parts, and 3C electronic enclosures.
- CNC precision machining after die casting
- We provide comprehensive CNC precision machining services for die-cast components (including milling, grinding, drilling, tapping, etc.), utilizing advanced machining centers such as the Makino F500 five-axis machine tool. Our machining accuracy ranges from 0.005 mm to 0.01 mm, meeting stringent tolerance requirements.
- Surface Treatment
- We provide one-stop surface treatment solutions encompassing cleaning, anodizing, chrome plating, powder coating, wet coating, sandblasting, screen printing, laser etching, and other processes.
15+
Industry experience(year)
20+
Porosity-free die-casting technology
70+
CNC machining centers
5,500 m²
Dedicated die-casting workshop
100%
X-ray examination available
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We offer additional services
Quality inspection reports
Pressure tightness inspection
Thread inserts
CMM measuring
X-ray inspection
Die Casting Process
Product DFM Analysis
mold flow
Mold Design
Mold assembling
Mold trial
Sample Approval
Test
CNC machining
X-ray inspection
Production Polishing
Mass production
Spray painting
Quality Control
Packaging
Transportationand After-Sales Service
Post-Casting CNC Machining
After die casting of precision parts is completed, further CNC machining is usually required to achieve higher precision and finer details. Our machining team evaluates which features are best suited for die casting and which require post-processing based on the dimensional tolerances and assembly requirements specified in the product drawings, thereby determining the solution that balances cost, efficiency, and precision.
- Large-scale machining capacity: We have approximately 70 CNC machines (3-axis, 4-, 5-axis) to meet large-scale production needs.
- Strict tolerance control: We are capable of high-precision machining for critical dimensions and possess tolerance control, making us highly suitable for high-precision assembly and part machining.
- Customized fixtures and tooling: We independently design and manufacture fixtures and tooling to process stability and repeatability, laying a reliable foundation for mass production.
- Complex geometry machining: Our Makino precision CNC machines can accurately machine deep cavities, thin walls and multi-surface parts, easily handling the machining challenges of complex geometries.
Die-casting equipment
Recently completed die-cast products
Die-Casting Materials
We have access to high-quality material suppliers and offer a wide range of die-casting alloys, including aluminum, magnesium, and zinc alloys.
All materials come with complete certification documentation, including material certificates of origin and spectroscopic analysis reports (which provide comprehensive chemical composition testing for raw materials, molten metal, and finished castings), ensuring traceable origins and reliable performance. Leveraging our stable supply chain, we offer competitive material pricing to our customers, effectively reducing procurement costs.
Aluminum Alloy Die Casting
Material Properties: Low density (2.7 g/cm³), excellent thermal conductivity, high corrosion resistance, and good fluidity, making it suitable for forming complex thin-walled structures.
Common Grades: ADC12 (good fluidity, most widely used), A380 (high strength, corrosion-resistant), A356 (heat-treatable, excellent mechanical properties)ADC10 (excellent die-casting fluidity, impact resistant); A413 (high silicon, suitable for thin-walled complex parts);L104 (domestic grade, balanced strength and toughness); Al-Si9Cu3 (European standard, general-purpose die-casting alloy); YL13 (domestic die-casting aluminum alloy)
Typical Applications: Automotive engine components, transmission housings, communication base station enclosures, heat sinks, motor housings
Material Certification: We provide factory-issued material certificates and spectroscopic analysis reports to ensure precise composition and reliable performance.
Magnesium Alloy Die Casting
Material Properties: With a density of only 1.8 g/cm³, it is the lightest structural metal, offering high specific strength, excellent vibration damping, and strong electromagnetic shielding capabilities.
Common Grades: AZ91 (excellent overall performance), AM60 (high elongation, good toughness), AZ31 (good formability, suitable for thin-walled parts)
Typical Applications: Automotive steering wheel frames, instrument panel brackets, laptop casings, smartphone mid-frames, power tool housings
Material Certification: We provide factory-issued material quality certificates and spectral analysis reports to ensure clear material traceability and consistent performance.
Zinc Alloy Die Casting
Material Properties: Low melting point (380–420°C), good fluidity, excellent casting performance, high surface finish, and outstanding plating and coating results.
Common Grades: Zamak 3 (excellent overall performance), Zamak 5 (high strength, high hardness), Zamak 2 (Good wear resistance)
Typical Applications: Electronic connectors, locks, hardware fittings, automotive interior components, decorative parts
Material Certification: Provide material factory quality certificates and spectroscopic analysis reports to ensure compliance with specifications and reliable quality.
Download our die casting design guide
The right design approach can significantly enhance your manufacturing experience.
Surface treatment of die-cast components
You can choose from XINXIU’s wide range of metal surface treatment services to enhance the performance of your die-cast components, such as improving their appearance, surface finish and corrosion resistance.
Grinding and polishing
Removes surface imperfections to achieve a mirror-like finish
Anodising
Forms a dense oxide layer, significantly enhancing corrosion and wear resistance, and enabling a wide range of colour options
Spray and powder coating
Provides uniform coverage with strong adhesion; customisable colours, gloss levels and textural effects
Passivation
Enhances corrosion resistance and provides an excellent substrate for coating
Electroplating
Deposits metal coatings such as zinc, nickel and chromium to improve corrosion resistance, wear resistance and electrical conductivity
Applications in the Die Casting Industry
We specialize in the manufacture of high-quality die-cast parts made from aluminum, magnesium, and zinc alloys. With 15 years of industry experience, we have a deep understanding of product development requirements and manufacturing standards across various sectors, including automotive, telecommunications, electronics, and medical devices. Whether for small-batch prototype validation or large-scale mass production, we offer one-stop die-casting solutions covering everything from mold design to final product delivery.
Automotive Industry
Telecommunications
Electronics Industry
LED industry
robot
Agriculture
View our completed projects
Die-casting services for new energy vehicle housings
XINXIU’s automotive casting products are designed to deliver performance, durability and efficiency across a wide range of projects.
We specialise in the production and manufacture of aluminium alloy die-cast automotive components, offering optimum strength and enhancing engine power.
5G Communication Die-Casting Services
XINXIU utilises a precision die-casting process for high-thermal-conductivity aluminium alloy to manufacture 5G heat sinks and RF filter housings, achieving a perfect balance between efficient heat dissipation, electromagnetic shielding and structural strength, thereby ensuring the stable operation of communication equipment.
Die-casting services for robot
XINXIU die-cast robot components feature a lightweight design whilst maintaining high strength. By utilising lightweight aluminium alloys, these components can reduce weight by 10% to 30%, effectively enhancing the flexibility of robotic arms and reducing operational energy consumption. They are widely used in industrial robotic arms, collaborative robot joints, and automated equipment brackets.
Frequently Asked Questions (FAQ) on Die Casting
- How do you choose between aluminium alloy, magnesium alloy and zinc alloy?
- Aluminium alloys offer high strength and excellent thermal conductivity, making them suitable for automotive structural components and radiators. Magnesium alloys have the lowest density, making them ideal for lightweight components such as robot joints. Zinc alloys offer the best fluidity, making them suitable for precision small parts and decorative components.
- What is the difference between vacuum die-casting and conventional die-casting?
- Vacuum die-casting involves evacuating the air from the mould cavity prior to filling, which significantly reduces porosity defects; the castings can then undergo heat treatment and welding. Conventional die-casting offers short cycle times and low costs, making it suitable for standard components.
- What level of precision can die-castings achieve?
- Die-cast parts generally achieve a precision grade of CT6–CT8. A machining allowance of 0.3–0.5 mm should be provided for critical dimensions, with higher precision achieved through subsequent CNC machining.
- What are the lead times for samples and mass production?
- Samples are delivered within 7–15 days. Small batches take 7–10 days after the mould is completed. Mass production is delivered in batches over 15–30 days.
- How is airtightness ensured?
- For parts requiring airtightness, vacuum die-casting is employed, followed by 100% airtightness testing (helium leak testing, water leak testing or pressure drop testing), with a test report provided.
- Are die-cast parts subjected to X-ray inspection?
- Yes, critical safety components undergo 100% full inspection with accompanying image reports, clearly identifying internal porosity and shrinkage defects. Standard components are inspected according to a sampling plan.
- What are the maximum dimensions and weight of die-cast parts?
- We have a 4,000-tonne die-casting machine capable of producing aluminium alloy castings with maximum dimensions of approximately 800 mm × 1,500 mm and weighing up to 50 kg.
- What is the minimum order quantity?
- There is no minimum order quantity. We can handle everything from prototype verification (starting from 10 pieces) to high-volume production, offering flexibility to suit both R&D and mass production phases.
- How do I obtain a quotation?
- Please provide 3D drawings (in STP or IGS format), quantity, material specifications and surface treatment requirements. We will provide you with a free quotation and DFM analysis report within 24 hours.
Why Choose XINXIU for Die Casting
With over a decade of expertise in die casting, XINXIU does more than just supply parts—we provide end-to-end reliability from design to finished product. Whether it’s automotive structural components, telecommunications enclosures, or precision electronic parts, we make complex die casting projects simple and manageable.
✓ Rapid Response, Shortened Lead Times
Prototype molds delivered in 7 days, production molds in 2–5 weeks, and die-cast parts shipped as fast as 7 days. We don’t just prioritize speed; we ensure seamless coordination at every stage to get your products to market faster.
✓ Flexible Scaling for Orders of Any Size
From 10-piece prototype validation to 10,000-piece mass production, we handle it all with ease. With no minimum order quantity restrictions, you can freely transition between product development and large-scale manufacturing.
✓ End-to-End In-House Control, Transparent Quality
From mold design, material melting, and die-casting to CNC machining and surface treatment—everything is completed in-house. We do not outsource critical processes, ensuring quality control throughout the entire process and full traceability at every stage.
✓ Technical Expertise to Solve Challenges
We are proficient in high-pressure, low-pressure, vacuum, and semi-solid die-casting processes, and specialize in solving die-casting challenges such as thin-wall molding, porosity control, and dimensional stability. Leave complex structural parts to us—all you need to do is accept the qualified parts.
✓ Data-Driven, Verifiable Quality
The composition of every batch of material is verified through spectral analysis, and an X-ray inspection report is provided for each casting. We don’t just promise quality—we prove it with data.
✓ Engineer Support, Peace of Mind Throughout
From DFM analysis and mold flow simulation to trial mold validation, our senior engineers provide one-on-one support to help you avoid design flaws early on and keep your project on track.