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Die Casting Heatsink

Die Casting Heatsink

  • High-Precision, Complex Geometry: Die casting enables the creation of intricate, thin-wall structures and deep cavities that are difficult to achieve through extrusion or machining.
  • Superior Dimensional Accuracy: With surface roughness as fine as Ra 0.8-3.2 μm and tight tolerances, die-cast parts ensure consistency and reliable thermal contact.
  • Efficient & Cost-Effective Mass Production: Ideal for high-volume runs-once mold investment (NRE) is covered (typically around 5,000 units), per-unit cost drops significantly.
  • One-Piece Integration: Combines heat sink, housing, mounts, and fastening features in a single casting-reducing assembly steps and enhancing structural integrity.
  • Excellent Thermal Performance: Utilizes aluminum alloys with good heat transfer and lightweight characteristics, well-suited for thermal dissipation demands.
  • Strong & Corrosion-Resistant: Cast components offer robust mechanical strength and inherent corrosion resistance, promoting long-term stability.
  • Custom Surface Treatments: Supports finishing options like plating, powder coating, or anodizing to enhance conductivity, durability, and aesthetics.
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Die Casting Heatsink Product

Custom Aluminum Die-Cast LED Sink
Custom Aluminum Die-Cast LED Sink
OEM LED Die-Cast Heat Sink
OEM LED Die-Cast Heat Sink
Precision Die-Cast Heat Sink
Precision Die-Cast Heat Sink
Aluminum Alloy Die-Cast Cooler
Aluminum Alloy Die-Cast Cooler
Round LED Heat Sink Die-Cast
Round LED Heat Sink Die-Cast
Square Die-Cast LED Sink
Square Die-Cast LED Sink
Heat Sink Die-Cast Module
Heat Sink Die-Cast Module
Metal Die-Cast Radiator
Metal Die-Cast Radiator

Customization Capabilities

We offer fully tailored die-cast heat sink solutions-optimized in form, finish, and functionality for your cooling requirements and production scale.

  • Alloy Selection: Aluminum alloys (e.g., ADC12, A380, A356) or zinc-selected according to thermal needs and design complexity. ([turn0search10], [turn0search20])
  • Surface Finish: Options include anodizing, powder coating, nickel plating, or custom treatments for enhanced protection and aesthetic alignment. ([turn0search2])
  • Integrated Features: Functional elements such as mounting bosses, tabs, or heat-proof channels can be integrated in one piece. ([turn0search1])
  • Dimensional Tolerance: High precision machining with minimal post-process trimming for rapid assembly. ([turn0search2])
  • Volume Flexibility: Supports from prototype runs to large-scale volumes with scalable economies. ([turn0search2])
  • OEM Branding: Custom logo embossing or part-labeling aligned with your design language and packaging strategy.
  • Lead Time: Faster production cycles once tooling is established, ideal for tight schedules.
  • Technical Guidance: Design consulting to optimize casting efficiency and thermal performance from early development stages.

Got a design, sketch, or idea? Share it with us for fast feedback

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Why Partner with Sinoextrud for Your Die Casting Heatsink Needs?

We are more than just an aluminum profile supplier — we’re your efficient, reliable, long-term partner.
With Us, You Get:Faster turnaround,Stable quality,Competitive pricing,End-to-end support.

Large-Scale Manufacturing:Our factory spans 1,000 mu (about 667,000 m²), with full in-house capabilities from aluminum smelting and billet casting to extrusion, surface treatment, and CNC machining.

One-Stop Solution:With 43 extrusion lines (500–5500 tons) and a dedicated mold partner, we provide fast production, custom profiles, and integrated services to simplify your supply chain.

Quality You Can Trust:Strict quality control ensures consistent dimensions, strength, and finish, reducing your risk and increasing reliability.

Fast Delivery & Cost Efficiency:Self-produced billets, in-house processing, and batch production mean faster lead times and lower overall costs.

Advanced Finishing Options:Anodizing and both vertical and horizontal powder coating lines deliver durable, high-quality surface finishes tailored to your product needs.

Factory Overview
Furnace workshop
Aluminum bar production
Mold Warehouse
500-5500 Tons Extruder
Spraying workshop
Anodizing workshop
Deep Processing Workshop
CNC Machining Workshop
Finished goods warehouse
Finished goods warehouse
Finished goods warehouse
Export warehouse
5500 Ton Extrusion Press
Aluminum extrusion press
Large Aluminum Extrusion Line
Aluminum extrusion production line
Extrusion workshop
IATF 16949 Certification
TUV
Finished goods warehouse
Export warehouse

-Standard Packing Option-

* Long bar length profiles 3.0-6.0 meters*
Protective Film
Shrink Sleeve
Brown Paper
Craft Paper
* Short bar length profiles 0.3-3.0 meters*
EPE Foam
Poly Bag
Wooden Crate
Wooden Case

-Loading & Shipment-

Pallet Loading
Bulk Loading
LCL Loading
Expedited Express

STEPS

How to work with us

Start A Project today
  • Quote & Estimation

    Begin with a thorough evaluation of the design's feasibility, followed by a prompt, detailed estimate.

  • Sample & Test

    Creating a prototype to assess dimensions and ensure the mold's precision aligns with the requirements.

  • Extrude & Finish

    Producing the aluminum profile with pinpoint accuracy to the given specifications and applying desired finishes.

  • Pack & Deliver

    Tailored packaging for the extruded profiles, ensuring safe and efficient loading for prompt delivery.

Die Casting Heatsink-FAQ's

What are die-cast heat sinks?
They are heat-dissipating components formed by injecting molten metal into a mold, ideal for complex geometry and high-volume production. ([turn0search2], [turn0search20])
What materials are used?
Commonly aluminum alloys like ADC12, A380, A356; zinc is also used where higher density or finish flexibility is needed. ([turn0search10], [turn0search20])
Can features be integrated into the design?
Yes-die casting enables inclusion of the sink, housing, mounting points, and fasteners in a single part. ([turn0search1])
When is die casting cost-effective?
When producing large volumes (usually ≥5,000 units), the initial tooling cost is offset by lower per-unit cost. ([turn0search2])
How is thermal performance?
Excellent-thanks to aluminum’s conductivity and ability to maximize surface area through complex shapes. ([turn0search5], [turn0search19])
What is the surface finish quality?
Smooth cast surfaces of Ra 0.8-3.2 μm with tight dimensional accuracy ensure superior fit and thermal contact. ([turn0search4])
Are there design or tooling limitations?
High tooling costs and lead times exist, but the method excels in repeatability and structural durability. ([turn0search2], [turn0search20])
Is post-processing required?
Minimal-precision casting reduces need for extensive secondary machining. ([turn0search2])
What sectors use die-cast heat sinks?
Widely adopted in electronics, automotive, LED lighting, telecoms, industrial equipment, and aerospace. ([turn0search5])
How to start customization?
Share your thermal requirements and design inputs; we’ll guide you from mold design to optimized production.

Products You May Looking for

Still have questions? Contact us — we’ll reply within 12 hours.

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Sinoextrud: Your Die Casting Heatsink Manufacturer

Die-cast heat sinks represent an ideal solution for high-volume, high-performance thermal management. By casting complex shapes in one piece, they reduce weight, assembly steps, and thermal resistance-all while enabling custom integration of functional features.


Manufactured using premium aluminum or zinc alloys, these components deliver both thermal efficiency and mechanical robustness. Excellent surface finish and accuracy ensure easy assembly and consistent cooling performance across batches.


For large-scale applications-from automotive electronics to LED lighting modules-die casting offers unmatched cost-effectiveness once the initial tooling is amortized. Surface treatments further enhance longevity and design alignment.


Leveraging our manufacturing expertise and design support, we help you transition from concept to production-balancing precision, performance, and procurement efficiency for B2B success.


Contact us to explore die casting for your next thermal solution-whether you need integrated features, rapid turnaround, or scalable volume production with consistency and reliability.


Die Casting Heatsink : The Ultimate FAQ Guide

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