Extruded Heat Sink Manufacturer
- Wide Range of Existing Tooling
- Precision CNC Machining
- Prototype to Production
- Worldwide Shipping
Extruded Aluminum Heat Sinks
Extruded heat sinks are high-efficiency cooling devices made by forcing aluminum through a precision die to form profiles with integrated fins. This one-piece construction (base plus fins) provides excellent thermal conductivity and structural stability – there are no thermal interfaces between the base and fins. We use high-grade aluminum alloys (typically 6063-T5 or 6061-T6) for strong, lightweight heat sinks.
Aluminum’s natural corrosion resistance and surface finish uniformity (after anodizing or coating) ensure reliable performance. Because extrusion is a simple, low-cost process, extruded heat sinks are especially suitable for high-volume production, offering low per-unit cost and fast lead times.
The Main Advantages of Extruded Heat Sinks Compared with Other Types of Heat Sinks.
- Wide Range of Existing Molds
- Standard and Custom Profiles
- Cost-Efficient Production
- Easy Secondary Machining
- Flexible Surface Finishing
Extrusion offers a strong balance of thermal performance, manufacturing efficiency, and project flexibility. Compared with more specialized structures, it gives buyers a practical route from prototype to production while keeping geometry, finishing, and mounting options open.
Compared with skived, bonded-fin, or liquid-cooled solutions, an extruded heat sink offers a simple one-piece aluminum profile that is robust, economical, and easy to customize. Fin shape, fin spacing, base thickness, and overall length can be adjusted to the project, while secondary machining makes it possible to integrate holes, slots, interface surfaces, and mounting details.
For many mainstream thermal requirements, extrusion gives enough cooling capacity without the extra complexity of higher-end structures. It is especially suitable when the design needs dependable manufacturing, repeatable quality, and a clear path from sampling to volume production.
Why Choose Our Extruded Heat Sinks
At XINXIANG, we supply standard and custom extruded aluminum heat sinks with cut-to-length service, CNC machining, drilling, tapping, anodizing, and assembly support for OEM and industrial buyers worldwide.
Our engineering team optimizes each profile for your airflow and mounting needs, maximizing surface area and heat transfer.
Send us your drawing, target dimensions, power dissipation, airflow condition, quantity, material preference, and finish requirement. If your design is still at concept stage, we can review the application and suggest a suitable existing heat sink extrusion profile or a custom extrusion path.
If you are comparing existing profiles, our heat sink extrusion profile selection guide explains how to evaluate width, height, base thickness, fin spacing, and CNC machining requirements before choosing a starting profile.
Our goal is to help you reach a manufacturable, cost-effective thermal solution with clear communication from inquiry to delivery.
Custom Fin Design:
We can develop a wide range of custom continuous-fin geometries and profile shapes within practical extrusion limits. Straight, slanted, and other continuous-fin profiles can be produced by extrusion. Cross-cut or pin-fin structures may be created through secondary machining when technically feasible. Round and radial heat sink profiles can also be developed where the required cross-section remains practical for extrusion. Our in-house design support and extensive extrusion tooling allow quick development of custom dies.
Competitive Pricing:
Extrusion tooling is a one-time cost, so per-unit price drops dramatically at volume. We offer low MOQ for prototypes (short runs) and tiered pricing for larger orders.
Fast Turnaround:
Prototypes (CNC or soft tooling samples) in ~1–3 weeks; full production in ~3–6 weeks after approval. Rapid production scheduling and streamlined processes keep your project on time.
Quality-Focused Manufacturing:
Material, dimensions, machining features, surface finish, and other critical requirements are inspected according to customer drawings and project specifications.
Global Service:
Our 6,000 m² facility ships worldwide. We provide technical support (drawing review, thermal simulation advice), JIT delivery, and reliable logistics for customers in North America, Europe, Asia, etc.
Technical Specifications
Our extruded heat sinks cover a wide range of sizes and options. Typical parameters include:
(Note: Values are illustrative ranges. Actual specifications depend on your design requirements.
“Unspecified” parameters (e.g. min fin thickness) are determined by die design and machinability
limits.)
Straight fin, slanted fin, wavy-fin, or other custom continuous-fin profiles; cross-cut and pin-fin structures may be created through secondary machining.
Cut-to-length per order (no fixed max; ≥2 m possible before cutting)
Up to ~650 mm (depending on die size); can be sawed or machined as needed
3 – 150 mm (many profiles 10–80 mm); custom per application
0.4 – 4 mm typical
1 – 10 mm (fin-to-fin spacing; smaller pitch for higher fin count)
2 – 25 mm (application-dependent; thicker bases for structural or current-carrying needs)
Aluminum 6063-T5 (standard), 6061-T6; other aluminum alloys subject to design review
≈ 2.7 g/cm³ (Aluminum)
Clear or black anodizing; MIL-PRF-8625 finishes available upon request. Powder coating (custom colors), or chromate; optional painting or custom plating (Ni, Cu)
For a more detailed comparison of anodizing, chromate conversion, powder coating, masking, and other finishing considerations, see our Heat Sink Surface Finishes guide.
~0.1 – 3.0 °C/W (varies with size, fin density, and airflow; see datasheet for specific designs)
Application-specific; temperature limits depend on the alloy, finish, assembly components, and operating environment.
Typical Applications
Common Questions from Our Clients
How long does it take to get a quote?
Usually within 24 hours. Just send us your drawing or basic specs — the more info you share, the faster we can quote accurately.
Do you have standard heat sink sizes?
We offer both standard and fully custom heat sinks. If you’ve got a drawing, great — if not, share your project information with us, and we’ll help you find a suitable solution.
Can the extrusion profile be customized?
Absolutely. We can design custom die profiles based on your drawing or requirements (fin geometry, number, orientation, mounting tabs, slots, etc.). Extruded heat sinks can also be secondary-machined (milled, tapped, drilled) easily after extrusion. Let us know your thermal load and mounting constraints and our engineers will design the optimal profile.
What materials do you use for heat sinks?
We typically use 6063-T5 and 6061-T6 aluminum for extruded heat sinks. Other aluminum alloys such as 6082-T6 may be evaluated for specific requirements.
When copper is required, skiving, forging, bonded-fin construction, or CNC machining is generally more practical than conventional heat sink extrusion.
What surface treatments are available?
Standard finish is clear (transparent) anodizing to prevent corrosion. Black anodize is very common for better emissivity/aesthetics. We also offer powder-coated colors, or specialty finishes (chromate, copper/nickel plating) on request. Finishing both protects the aluminum and meets any color/branding needs.
Can you help with thermal design or selection?
Sure thing. Our team can review your specs and suggest suitable materials, fin types, or cooling methods based on your application.
Do you support small volume orders or prototypes?
We do. Whether you need 10 pieces or 10,000, we’re flexible. We also support prototyping for new designs. Send us your drawing and required quantity, and we will prepare a quotation.
What is your production lead time?
We’ve got a large inventory of existing molds. That means we can sometimes skip the tooling stage and jump straight into production. For that it takes us 1 to 4 weeks depending on the details of your order.
For orders requiring a custom heat sink mold, tooling development and sample approval are usually required. We can also work on that quickly.
How do you pack the heat sinks?
We select suitable packaging according to the part size, fin density, quantity, and shipping method. Options may include protective trays, cartons, pallets, or wooden crates.
We can also follow your specified packaging requirements.
Can you do door-to-door shipping?
Yes, we can. We work with several reliable freight forwarders and can arrange door-to-door shipping to most countries — just let us know your delivery address.
We can also use your freight forwarder if you have one.
Ready to Get Started?
Tell us about your project! Fill out the RFQ form below with your specifications and we’ll provide a free, personalized quotation.
You can also contact our team at sales@heat-sinks.com