Aluminum Heat Sink Extrusion Profiles
High-fin-density aluminum heat sink profiles for LED lighting, power electronics, and industrial cooling.
Product Overview
Thermal management is one of those engineering problems that's easy to underestimate until something fails. An LED driver that runs 20°C hotter than it should will have half the expected lifespan. A power inverter without adequate heat dissipation will derate under load, reducing efficiency and potentially causing nuisance shutdowns. The heat sink is the component that stands between your electronics and premature failure — and aluminum extrusion is the most cost-effective way to make one.
Aluminum's thermal conductivity of 160 W/m·K (for 6063 alloy) makes it an excellent heat spreader. The extrusion process allows complex fin geometries — high, thin fins with tight pitch — that would be impossible or prohibitively expensive to machine. A well-designed extruded heat sink can achieve thermal resistance values of 0.3–0.8 °C/W, sufficient for most power electronics applications up to several hundred watts.
We manufacture heat sink profiles in a wide range of fin configurations: straight fins, cross-cut fins, pin fins, and custom geometries. Standard fin heights range from 10mm to 80mm, with fin pitch as tight as 2.5mm. For natural convection applications, taller fins with wider pitch are preferred; for forced air cooling, tighter pitch fins with lower height are more effective.
The LED lighting industry in Southeast Asia is one of our largest heat sink customers. As LED power densities increase — modern high-bay LEDs now exceed 200W — the thermal management challenge grows accordingly. Our heat sink profiles are used in LED street lights across Vietnam, industrial high-bay fixtures in Thailand, and horticultural lighting systems in Malaysia. In each case, the profile is designed to the specific thermal requirements of the LED module, not adapted from a standard catalog item.
Surface treatment for heat sinks is typically mill finish or anodized black. Black anodizing increases the emissivity of the aluminum surface from approximately 0.05 (bare aluminum) to 0.85 (black anodized), significantly improving radiative heat transfer in natural convection applications. For forced air cooling, the surface treatment has less impact, and mill finish is often specified to reduce cost.
Technical Specifications
| Alloy / Temper | AA 6063-T5 |
|---|---|
| Thermal Conductivity | 160 W/m·K |
| Fin Height Range | 10 mm – 80 mm |
| Fin Pitch Range | 2.5 mm – 15 mm |
| Base Thickness | 3 mm – 15 mm |
| Max Profile Width | 300 mm |
| Standard Length | Custom cut to length |
| Tolerance | Class A, GB/T 5237.1 |
Compatibility, Assembly and Order Controls
For modular framing, a nominal outer size is not enough to establish compatibility. Confirm the supplied section drawing, slot geometry, core-hole arrangement, connector family and cut/machining references before a mixed-series order is released.
Information for an Accurate Inquiry
- Cross-section or assembly drawing
- Profile reference and accessory family
- Cut list / BOM with revision
- Load and span context where relevant
- Finish, quantity, packing and destination
Related Engineering Guides
- T-Slot Compatibility: Slot Geometry, Nuts and Connectors — Measure before mixing profile or accessory series.
- Aluminum Frame Deflection: Loads, Spans and Supports — Use for project-specific frame review.
- How to Prepare a BOM for an Aluminum Machine Frame — Turn a frame drawing into a controlled order list.
- Cut-to-Length T-Slot Profiles: Specification Guide — Specify cuts, holes, threads and datums.
Request a Technical Quote
For drawings, MTRs, samples, pricing, and lead time, contact Andy: WhatsApp +86 151 1618 3980 or lkvicky2003@gmail.com. Please include profile reference, alloy/temper, surface finish, quantity, and destination port.