High-Fin Air-Cooled Heat Sink Aluminum Profile

High-fin air-cooled heat sink aluminum profile - in AI inference servers and edge-computing workstations, air cooling remains the mainstream thermal solution. As chip power keeps rising, ordinary heat sinks can no longer meet heat dissipation needs, making high-fin aluminum heat sinks the key technical path for air cooling.

Shanghai Chuangsi Aluminum focuses on the core requirements air cooling places on profiles - "high heat-dissipation density, low air resistance, high forming precision" - and provides one-stop custom mold development from fin topology optimization, mold development, and one-piece extrusion to precision deep-processing. By optimizing the fin topology, we maximize heat-dissipation area within the limited installation space and, paired with precise airflow-channel design, achieve efficient convective heat transfer that effectively covers the hundreds-of-watts dissipation needs of single chips.

Core advantages at a glance:

01 Quality Starts from Raw Materials

Produced from A00 primary aluminum ingot with no scrap aluminum, giving stable thermal conductivity and consistent heat-dissipation performance within a batch.

02 High-Fin Precision Forming

Using high-precision dies and isothermal extrusion, we achieve ultra-thin fins and high aspect-ratio complex fin geometry, with min. fin thickness 0.5mm, max. fin height 60mm, and fin-height ratio up to 15:1. Fins are uniform with no broken or tilted teeth, keeping airflow channels even and clear. Fin thickness deviation is held within ±0.03mm, with no collapsed or starved fins.

03 Low Air-Resistance Optimized Design

Using thermal-simulation data to optimize fin spacing, fin thickness, and airflow-channel angle, we can customize staggered, split, and inclined fin geometries, controlling air resistance reasonably while preserving heat-dissipation area and matching server fan pressure characteristics.

04 Low-Stress Stabilizing Process

We strictly apply a two-stage constant-temperature aging process to fully release residual stress in the profile, giving minimal base warpage after machining. Base flatness ≤0.05mm/100mm and fin straightness ≤0.3mm/m ensure tight contact between the heat sink, chip, and heat pipes, effectively lowering contact thermal resistance.

05 Multiple Alloy Options

For standard air cooling, 6063-T5 alloy offers good formability and cost performance; for high power, 1070 pure aluminum offers better thermal conductivity and 10%+ higher dissipation; for heavy installation, 6061-T6 high-strength alloy offers strong rigidity and resistance to deformation.

06 In-House Process Control

With 3800 sqm of factory floor, mold development, hot extrusion, aging, and CNC finishing are all controlled in-house with no outsourcing. The mold R&D stage uses CAE metal-flow simulation to optimize the feeder design, tuning fin height and spacing for the high-power dissipation conditions of AI servers.

Machining capability parameters:

High-fin air-cooled heat sink vs. ordinary heat sink:

Alloy selection for high-fin air-cooled heat sinks:

Typical applications:

• Air-cooled heat sinks for AI inference servers

• Heat sinks for edge-computing workstations

• Air-cooled modules for GPU servers

• Dissipation profiles for small-to-medium compute stations

• Dissipation for AI industrial vision equipment

• Heat sinks for 5G base-station AAU

FAQ (Frequently Asked Questions)

Q1: What is the difference between high-fin air-cooled heat sinks and ordinary heat sinks?

A: High-fin air-cooled heat sinks maximize heat-dissipation area within the limited installation space by optimizing the fin topology, with min. fin thickness 0.5mm, max. fin height 60mm, and fin-height ratio up to 15:1. Using high-precision dies and isothermal extrusion, fins are uniform with no broken or tilted teeth, keeping airflow channels even and clear. Heat-dissipation area is 40%+ higher than ordinary profiles, and chip operating temperature can drop 5-8 °C at equal power, suiting high-heat-flux air-cooled scenarios such as AI inference and GPU servers.

Q2: What fin-height ratio can high-fin air-cooled heat sinks reach?

A: The fin-height ratio can reach up to 15:1 (fin height 60mm / fin thickness 0.5mm). A high ratio means more heat-dissipation area on a limited base and higher efficiency. But the higher the ratio, the longer and thinner the die cantilever, and the harder the extrusion. Through CAE metal-flow simulation and isothermal extrusion, we ensure forming quality for high-ratio fins, holding fin thickness deviation within ±0.03mm with no collapsed or starved fins.

Q3: Which alloys can be used for high-fin air-cooled heat sinks?

A: For standard air cooling, 6063-T5 high-thermal-conductivity alloy (about 201W/(m·K)) offers good formability and cost performance; for high power, 1070 pure aluminum (about 226W/(m·K)) offers 10%+ higher dissipation; for heavy installation or vibration, 6061-T6 high-strength alloy offers strong rigidity and deformation resistance. Produced from A00 primary aluminum ingot with no scrap aluminum, giving stable thermal conductivity.

Q4: How much more heat-dissipation area do high-fin air-cooled heat sinks offer than ordinary profiles?

A: Heat-dissipation area is 40%+ higher than ordinary profiles. By optimizing the fin topology - thinner fins (min. 0.5mm), tighter spacing, and taller fins (max. 60mm) - we pack more fins onto a limited base and, paired with precise airflow-channel design, achieve efficient convective heat transfer. Chip operating temperature can drop 5-8 °C at equal power.

Q5: What are the MOQ and lead time for high-fin air-cooled heat sinks?

A: MOQ supports R&D prototyping at the 50kg level. Mold development for standard structures takes 7-10 days for samples, and batch delivery is 10-15 days after sample confirmation. With 3800 sqm of factory floor, mold development, hot extrusion, aging, and CNC finishing are all controlled in-house with no outsourcing.

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Call Manager Du: 13611846009

Provide drawings or technical requirements, and our engineering team gives a feasibility assessment and mold plan within 2 hours.

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