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Aluminum Heat Sink

Aluminum Heat Sink Manufacturing Excellence

Industry-leading aluminum heat sink solutions combining lightweight design with efficient thermal dissipation. Rapidaccu delivers precision-engineered cooling systems for electronics, LED lighting, and industrial applications backed by 15 years of CNC manufacturing expertise.

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Material Advantages

Why Aluminum for Heat Sinks?

Aluminum alloys offer the optimal balance of thermal conductivity, weight, cost-effectiveness, and manufacturability for most cooling applications. With a thermal conductivity of 205-250 W/mK, aluminum heat sinks provide excellent performance at a fraction of copper’s weight and cost.

Lightweight Design

Aluminum’s low density (2.7 g/cm³) reduces overall system weight by up to 70% compared to copper, critical for aerospace, automotive, and portable electronics.

Cost Effective

Lower material costs and excellent machinability make aluminum the economical choice for high-volume production without sacrificing thermal performance.

Corrosion Resistance

Natural oxide layer provides inherent corrosion protection. Anodizing enhances durability and enables aesthetic finishes for consumer products.

Manufacturing Technologies

Multiple fabrication methods to match your performance requirements and production volume

Extrusion

Cost-effective method for creating uniform cross-section profiles. Ideal for high-volume production with consistent geometry requirements.

6063-T5 and 6061-T6 alloys
Width range: 10mm to 1000mm
Custom profiles without MOQ penalty

CNC Machining

Multi-axis precision machining for complex geometries, skived fins, and intricate cooling patterns with tight tolerances.

±0.025mm dimensional accuracy
5-axis capability for complex features
No tooling costs for prototypes

Bonded Fin

Maximum surface area density by bonding thin aluminum fins to base plates. Optimal for high-power applications requiring extreme cooling.

Fin thickness down to 0.3mm
Custom layouts without mold costs
Superior surface area to volume ratio

Product Portfolio

High Fin Density Design

CNC milled for forced air cooling applications requiring maximum heat transfer efficiency

Extruded Profile Systems

Standard and custom extrusions for power electronics and industrial equipment cooling

Thermoelectric Coolers

Optimized for Peltier elements with flat base contact and high fin surface area

LED Lighting Solutions

Integrated housing and heat sink designs for commercial and architectural lighting

Highbay Lighting Cases

Cylindrical designs for 100-200W industrial and warehouse lighting applications

Custom Solutions

Don’t see what you need? We specialize in custom-engineered aluminum heat sinks.

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Rapidaccu Manufacturing Advantage

Our Shenzhen facility integrates aluminum extrusion capabilities with advanced CNC machining centers, enabling us to select the optimal manufacturing method for your specific requirements. This vertical integration ensures cost efficiency, quality control, and flexibility from prototype to production.

30,000+

Standard Profiles Available

±0.025mm

CNC Tolerance

15 Years

Industry Experience

1000mm

Max Width Capacity

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Surface Treatment Options

Enhance performance, durability, and aesthetics with professional finishing

Clear Anodizing

Type II or Type III hard anodizing for corrosion protection and electrical insulation

Black Anodizing

Enhanced emissivity for radiation cooling and premium aesthetic appearance

Color Anodizing

Custom color options for brand matching and product differentiation

As-Machined

Natural aluminum finish with optional chemical brightening for cost-sensitive applications

Industry Applications

LED Lighting

Street lights, highbay, architectural fixtures

Power Electronics

Inverters, converters, motor drives

Telecommunications

Base stations, amplifiers, switches

Electric Vehicles

Battery management, chargers, IGBT modules

Renewable Energy

Solar inverters, wind controllers

Computing

Servers, workstations, gaming PCs

Industrial

Automation, welding, CNC controls

Medical Devices

Diagnostic equipment, imaging systems

Consumer Electronics

Audio amplifiers, displays, projectors

Aerospace

Avionics, radar, satellite systems

Frequently Asked Questions

What aluminum alloys are best for heat sinks?

6063-T5 is the most common extrusion alloy offering excellent thermal conductivity (200-220 W/mK), good corrosion resistance, and optimal extrudability. 6061-T6 provides higher strength for applications requiring mechanical rigidity. We can recommend the best alloy based on your specific thermal and structural requirements.

How does extrusion compare to CNC machining for heat sinks?

Extrusion is cost-effective for high volumes with uniform cross-sections but requires tooling investment. CNC machining offers design flexibility, no tooling costs, and is ideal for prototypes or complex geometries. We help you choose the optimal method based on quantity, complexity, and budget.

What is the maximum size aluminum heat sink you can manufacture?

Our extrusion capabilities handle profiles up to 1000mm wide. For CNC machined heat sinks, dimensions are limited by our machine bed size and material availability. Large assemblies can be fabricated from multiple sections with mechanical or adhesive bonding. Contact us with your dimensional requirements for specific capabilities.

Do you offer thermal performance testing?

Yes, we provide thermal resistance testing using calibrated heaters and thermocouples under controlled airflow conditions. We can also perform CFD thermal simulation during the design phase to predict performance before manufacturing. This validation ensures your heat sink meets specified thermal requirements.

Can aluminum heat sinks be used in corrosive environments?

Aluminum naturally forms a protective oxide layer. For harsh environments, we recommend Type II or Type III hard anodizing which significantly enhances corrosion resistance. Chemical conversion coatings like chromate or non-chromate alternatives are also available for specific applications. We assess your environmental conditions to recommend appropriate surface treatments.

What is the typical MOQ for extruded aluminum heat sinks?

For standard profiles, we can accommodate orders as small as 100 pieces. Custom extrusion profiles typically require MOQ of 500-1000 pieces to justify tooling costs, though this varies by profile complexity. For prototype quantities, CNC machining from billet is more economical. Contact us to discuss your specific volume requirements.

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Rapidaccu Contact Information

Manufacturing Facility

Rongli Industrial Park, Dalang, Longhua District, Shenzhen, China

Email Address

info@rapidaccu.com

Technical support available

Industry Experience

15 years specializing in precision aluminum heat sink manufacturing and thermal solutions

What We Need From You:

Technical drawings or 3D CAD files (STEP/IGES)
Power dissipation and thermal requirements
Expected production volume and timeline
Surface finish and treatment preferences
Quality standards and certification needs