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Aluminum Heatsink Extrusions2024-02-20T03:03:48+00:00

Aluminum Heatsink Extrusions – Stocked & Custom

FONNOV ALUMINIUM is a custom aluminum heatsink extrusions manufacturer and stocked aluminium heatsinks supplier.

At FONNOV, there are hundreds of existing dies of the extruded aluminum heatsink, which will help reduce your costs.

FONNOV provides machining services (cut to length, drilling, tapping, countersinking, deburring, CNC milling, etc.) for your aluminium heatsink order.

FONNOV provides anodizing and powder coating finish for aluminum heatsink extrusions.

extruded aluminum heatsink

Contact our consultants for more extruded aluminum heatsinks.

Your Single Source Supplier of Aluminum Heatsink Extrusions

Aluminum Heatsink Extrusion Sizes & Finishes

We can produce kinds of aluminum heatsink extrusions, especially large aluminum heatsink. Finishing can be mill finish and anodizing.

Aluminum Heatsink Extrusion Alloys

We produce custom aluminum heatsink extrusions with alloy 6063, 6061, 6060 and 6082, etc.

CNC Machining & Fabrication Service For Aluminum Heatsink Extrusion Profiles

Services including precision cutting to length, hole-punching, CNC milling, bending, welding, laser cutting, deburring, counter sinking, assembly, laser etching, etc.

Supply Aluminum Heatsink Extrusions

Custom Extrusion

Existing Stock

extruded aluminum heatsinks-fonnov
  • No MOQ For Stocked Aluminum Heatsinks

No minimum order quantity is required for our stocked aluminium heatsinks. Selecting a similar size from us will help save your cost on the prototype. 

  • High-quality Tooling And Material For Production

FONNOV uses high-quality steel tooling to ensure that each side of the aluminium heatsink has high strength and toughness because each side has to withstand a large extrusion force. If there is a big difference in performance, it is easy to break.

FONNOV ALUMINIUM extrudes aluminium heatsinks with national standard aluminum billet. We don’t produce with scrap aluminum. The surface will be rough if using scrap aluminum.

  • Extra Service Of CNC Machining And Secondary Coating

Fonnov delivers your aluminum heatsink for direct use. We also manufacture machined aluminum plates for your aluminum heatsink enclosure.

Machined Aluminum Heatsink

Professional Aluminum Heatsink Extrusion Manufacturer

FONNOV produces and controls aluminum heatsink extrusion quality in strict accordance with National Standards GB/T6892 and GB/T3190. Our customers are all over the world, and we are quite familiar with both American Standard ASTM B221 and European Union Standard EN755 of extruded aluminum products. The rich experience helps us know how to meet the strict quality requirements.

We use aluminum billets that strictly in line with national standards to complete the extrusion.

You Best Choice of Aluminum Heatsink Extrusion Manufacturer

Do you need custom aluminum heatsink extrusions for your new heat sink project? Or, you want to develop more vendor options for your extruded aluminum heat sink parts?

Search no more. FONNOV ALUMINIUM is the right aluminum heatsink extrusion manufacturer for this task.

  • Experience

FONNOV is working on kinds of aluminum heatsinks for different industries. Our manufacturing workers have built up rich, deep experience from many previous extruded aluminum heatsink projects, so they know what customers like on extruded aluminum heatsinks and how to meet customers’ quality requests.

  • Strict Quality Test

FONNOV is strict on qualify of aluminum heatsink extrusions and machined aluminum heatsinks. Providing high-quality aluminum heat sink is what we should do for our customers. We provide Quality Test Report for each delivery.

How Does FONNOV Produce A Qualified Aluminum Heatsink Extrusion?

To produce a qualified aluminum heatsink extrusion, high-quality aluminum ingots, high-precision die and extrusion process are all required.

Many fins on heatsinks make the aluminum heatsink extrusion more difficult than others. How do we ensure getting quality aluminum heatsink extrusions?

  • The steel tooling dies used for aluminum heatsink extrusion should be better. There’re many fins on heat sinks, and each fin will be under great pressure, so we must make each fin very strong. The high quality of the H13 steel die will be reliable to prevent any fins from breaking.
  • Avoiding fins breaking is also the main target during heatsink extrusion. What we should do is a careful extrusion and reduce the extrusion pressure.
  • The heatsink die will be under several amending after each trial to get a perfect dimension. So the aluminum heatsink extrusion is generally with several times trials.

Stocked Aluminum Heatsink Extrusions

We have a large and wide range of existing dies of the aluminium heatsink and electrical enclosure. This can help to save more costs.

The existing stocks are mainly of round aluminum heatsinks(hollow or solid) and straight fins aluminum heatsinks.

If you are looking for a stocked aluminum heatsink with small quantity, select one from our list. 




round heat sink hollow type-fonnovaluminium

Round Aluminum Heatsink Extrusions – HOLLOW TYPE

20*6 20*9 22*8 28*9 33*18
35*9 35*12 35*13 36*6 36*19
36*9 37*12 38*20 38*12 39*23
39*24 40*9 41*22 44*13 45*10
47*24 47*27 49*29 49*27 50*11
50*29 50*28 50*22 50*27 51*27
52*15 52*25 53*17 59*40 60*30
60*20 60*31 60*27 62*30 62*22
70*28 70*32 73*45 76*20 77*52
79*31 83*40 85*60 85*40 90*36
90*40 90*32 90*27 90*69 91*60
92*32 95*65 95*48 98*50 98*45
99*70 100*65 100*43 102*78 106*42
110*50 111*56 111*32 114*42 115*65
115*50 119*65 120*92
round heatsink solid type-fonnovaluminium

Round Aluminum Heatsink Extrusions – SOLID TYPE

49*28 49*27 50*11 52*28 52*14
53*28 37*12 38*20 38*12 39*23
39*24 54*23 60*30 61*36 65*23
66*31 69*30 70*18 74*37 74*17
75*28 75*25 78*27 79*30 80*36
80*50 82*24 94*35 95*30 96*22
98*50 99*33 101*34 105*35 105*42
110*62 110*6 122*54
heatsink straight fin-fonnovaluminium

Aluminum Heatsink Extrusions – STRAIGHT FIN TYPE

14*15 28*10 28*11 30*5 37*15
40*5 40*11 40*19 40*20 40*30
45*10 45*18 50*16.5 50*20 50*22
50*22.5 53*28 55*30 56*10 56*20
60*18 60*23 63*30 66*15 69*36
70*15 70*16 70*35 74*22 75*20
75*25 76*22 76*55 80*27 80*39
80*45 84*25 85*12 85*25 89*40
95*24 98*40 99*45 99*60 100*8
100*18 100*36 100*50 100*55 108*40
120*7 120*12 120*29 120*50 127*63
130*30 138*30 140*30 140*43 140*50
140*58 146*22 150*13 150*35 150*45.5
150*46 150*52 150*60 152*18 160*45
160*50 175*73 178*21 180*19 185*60
188*47 190*61 190*80 190*81 200*25
200*30 200*37 200*44 200*45 200*50
200*61 201*15 220*20 220*40 220*45
230*26 230*45 230*67 230*80 239*64
240*15 240*35 250*40 253*50 253*88
260*20 260*80 262*60 270*15 300*40
300*43 300*83 301*47 301*51.5 302*26
309*76 325*34.5 353*64 400*50 400*65

Aluminum Heatsink Enclosure

25*25 71*25.5 76*46 80*24 83*30
88*38 97*40 106*40 106*55 107*47
114*33 125*51 145*68 147*41 168*54

Aluminum Heatsink Extrusion Mechanical Properties

(Only List Aluminum Alloy 6063 6061 6082)

Alloy & Temper Wall Thickness (mm) Tensile Strength
Yield Strength
Elongation /%


Hardness HBW
6061-T5 ≤16.00 240 205 9
6061-T6 ≤5.00 260 240 95
>5.00-25.00 260 240 10 95
6063-T5 ≤3.00 175 130 65
>3.00-25.00 160 110 7 65
6063-T6 ≤10.00 215 170 75
>10.00-25.00 195 160 8 75
6082-T5 ≤5.00 270 230 90
6082-T6 ≤5.00 290 250 95
>5.00-25.00 310 260 10 95
Column 1 Value 11 Column 2 Value 11 Column 3 Value 11 Column 4 Value 11 Column 5 Value 11 Column 6 Value 11

✣The tested value is Min.

Is extruded aluminium the RIGHT material for your heatsink project?

An aluminum heatsink is important to prevent overheating in electrical components. It can carry the heat away because of its conductivity. Without an effective heat sink, many electronic components, machines, or equipment will burn out.

Extruded aluminium heatsinks are widely used due to their good heat dissipation. You can find them in LED lighting, automobiles, wind power generation, construction machinery, air compressors, railway locomotives, household appliances, computers, and other industries.

Large-sized aluminium heatsink profiles are mainly used in the central air conditioning and transportation industry, and small-sized aluminium heasinks are used in electronics, precision machinery, and instrument industries.

aluminium heatsink
  • The 6063 aluminum alloy has good thermal conductivity (160-180W/m·K).
  • Aluminum extrusion makes the production of heat sink easier and relatively low cost.
  • Aluminum extrusion is easy to process into complex shapes. There are many customized shapes of extruded aluminium heatsinks for an ideal heat dissipation effect. The shape of an aluminum heatsink extrusion could be comb shapes, tree shapes, fishbone shapes, round shapes, etc. Increase the surface area of the aluminium heasinks, and the heat dissipation effect will be better.
  • The surface of the extruded aluminium heatsink is mainly anodized (always natural silver clear anodizing or black anodizing) to improve the aluminum material’s corrosion resistance, wear resistance, and aesthetics.

Aluminum Heatsink Extrusion FAQs

Here are most of the questions related to aluminum heatsink extrusion. We hope you will find the answer to your question. If not, please leave us a message.

How extruded aluminum heat sinks are created?2023-10-03T05:49:40+00:00

Our aluminum heat sink starts with aluminum extrusion, then cutting and CNC machining, and completes with mill finish or anodizing. Aluminum billets are forced through a die and the products cut into the right sizes.

Aluminum extrusion is a cost-effective way of manufacturing aluminum heat sinks and also allows our team to create complex heat sink extrusions at very reduced costs.

Once the extrusion has been formed, it’s cut to the desired length based on requirements. Although, extrusion has a limitation regarding heat sinks development. It limits the product’s width to some extent.

Types of Aluminum Heat Sinks2023-10-03T05:35:02+00:00

There are multiple aluminum heat sinks available in the market. Let’s look into the below heat sinks you definitely want to know about.

  • Stamping Heat Sink

Aluminum sheets are stamped in press in a process called die stamping to make stamping heat sinks. The designs are based on the intended application.

The result is two parts of heat sinks with base and stamped fins. The fins increase the heat sink’s strength and gives the manufacturer an opportunity to make multiple sink designs.

  • Folded Fin Heat Sinks

Folded fin heat sinks are produced by bending aluminum material in a fan/fin shaped structure. The result is thinner heat sinks with relatively higher aspect ratios.

The fins are then soldered to base for strength. In addition, heat pipes may be introduced for heat transfer. Since there are passive heat sinks, they’re used in combination with a fan to ensure proper air flow.

  • Machining Heat Sinks

This is accomplished through laser and CNC machining. The aluminum heat sinks produced are very economical but designs are limited.

  • Extruded Heat Sinks

These ones are cost effective and offer one of the best thermal performances. They are produced through extrusion using alloy 6063-T5. The alloy is utilized because of superior mechanical properties as well as thermal attributes. We can attest that it’s true the extruded aluminum heat sinks bear low production costs, especially when produced in large quantities.

  • Standard Extruded Heat Sinks

We, at FONNOV Aluminum offer variety of heat sinks upon request. Our standard extruded heat sinks have been expertly developed through extrusion with proper and standard procedures observed. After extrusion, the heat sinks are cut according to requirements, machined, and finally anodized.

We also elongate the sinks after production. This customization allows us to meet client specific needs especially those that are size related.

We have round and straight standard heat sinks. The round standard extruded heat sinks are of two types including hollow and solid type. Their outside diameter (OD) and inside diameter (ID) vary in ratios.

The straight fin type heat sink has ratios calibrated in mm, measured as weight versus height. The ratios available on our stock range vary a lot.

What aluminum alloy do you use for a heat sink extrusion?2023-10-03T05:58:24+00:00

We use two major aluminum alloys including alloy 6061 and 6063. We use the T5 and T6 tempers for the 6061 alloys to produce aluminum heat sink extrusions.

We also use T5 tempers for alloys 6063. It offer the best thermal and mechanical properties for aluminum heat sink extrusion production.

Aluminum Heat Sink Applications2023-10-03T05:43:29+00:00

Aluminum heat sinks are applied in various industries that require continuous cooling for their equipment to work optimally, consistently, and reliably. Below are some of the most common heat sink applications:

  • Telecommunications industry

Aluminum heat sinks are an integral part of equipment used in the telecommunications industry. For instance, routers are important network transmitters. During these transmissions, there’s a lot of heat production. Heat sinks plays an important role in the dissipation of the energy to allow the devices cool down and keep working optimally.

  • Computers and electronics

Super computers require lots of energy to function. They also emit massive heat in the process. Aluminum heat sinks help to cool down the CPUs and GPUs thereby keeping the computers in the right working conditions.

  • LED lighting

Continuously lighting leads to emission of heat. Heat sinks help to cool the system and elongate its lifespan.

  • Automotives

Electric and hybrid vehicles produce a lot of heat during movement. They must be cooled to allow proper functioning lest the vehicles overheat and stops working properly. Aluminum heat sinks help dissipate the heat therefore cooling the vehicles, especially the engine area.

Extruded Aluminum Heat Sink Vs Die Cast Heat Sink2023-10-03T06:04:54+00:00

Aluminum extrusion involves forcing billets through a die. This is the best option for complex cross section aluminum heat sinks. Besides, die engineering incur significantly lower costs in comparison to castings. Extruded aluminum heat sinks also have fine finishes and generate stronger products. The only shortcoming of this option is the size constraints.

On the other hand, die cast heat sinks are made when molten aluminum is forced into a mold. After that, time is given to the billet to allow the molten aluminum to solidify. Unfortunately, the casting process is slower and produces end products with seams and imperfections.

How does aluminum heat sink work?2023-10-03T05:54:02+00:00

Most equipment that uses electrical current to function generates heat in the process. Once this heat is generated, it must be removed from source for the equipment to continue working optimally. Aluminum heat sinks are strategically positioned to catch the heat produced from the source through conduction.

Depending on whether the aluminum heat sink is active or passive, the heat will be moved from high to low temperature areas. Temperature gradient allows this to happen seamlessly.

During operations, aluminum heat sinks tend to be hotter towards the area producing heat and cooler towards the outer area of the sink.

During production, thermal gradient is established based on operational needs. When the heat sink is functioning, this gradient determines how effective the heat sink will be.

Heat sinks that work with fluids ensures that the fluid passes through the area with excessive heat and spreads the heat to the cooler areas. This is then transferred to areas with the least heat and consequently dissipate to the air.

Can aluminum heat sinks be used in combination with other coolings?2023-10-03T06:01:07+00:00

Active aluminum heat sinks are used in combinations with fans, water pumps, or air blows among other technologies to achieve more effective heat dissipation results. The active heat sinks are the most commonly used sinks in combinations as they’re utilized for temperature control.

This ensures that they not only control temperature and protect the equipment but also enhance their performance. Aluminum heat sinks are also combined with heat pipes for better cooling of the equipment.

What are the factors you consider before choosing the right extruded aluminum heat sink?2023-10-03T05:13:47+00:00
  • Thermal Requirements

When considering this factor, you must ask yourself how much heat can the heat sink you want dissipate? Answering this correctly means you’ve already established the amount of energy your device needs the heat sink to take care of. Once you’ve determined this, you’d be having the correct information to choose the right extruded aluminum heat sink.

  • Active or Passive Heat Sinks?

Active heat sinks utilize fluid to dissipate heat. On the other hand, passive heat sinks manipulate air flow to accomplish the same, only minus fluids. Therefore, each of these heat sinks have different applications.

This means you must understand the environment under which you want your heat sink to operate. That way, you can match the heat sink specifications with the environmental requirements needed for your device.

  • Thermal Resistance Formula

A heat sink must efficiently conduct heat and effectively dissipate it. To accomplish this, we follow the thermal resistance formula to the latter. The formula ensures we produce the right extruded aluminum heat sink for your products.

  • Thermal Interface Material

The material joining the heat sink and the device in need of heat dissipation plays an important role in achieving efficiency. The gap filler also known as thermal grease must be of the correct gradient for efficient heat transfer. Conversely, the device must be compatible to the gap filler. On our end, we design and produce extruded aluminum heat sinks that are easily compatible with gap fillers.

Advantages of aluminum heat sink extrusion2023-10-03T04:45:49+00:00

Aluminum alloys are considered the best options for making heat sinks for the following reasons.

  • Easy to Fabricate

Aluminum is light and soft. This makes it easy to bend, weld, or cut the metal into different shapes. Heat sinks can be large or small in size but have complicated shapes and designs that require easy-to-fabricate materials.

  • Light Weight

Aluminum is three times lighter than steel. Its volume while in solid state determines its weight after extrusion. Overall, it has a reduced atomic weight which makes it lighter than most of the other available options like steel.

The aluminum alloy 6063 and 6061 for heat sink extrusion has a density of 2.7 Kg/m3 when in solid form which reduces to 2.36 Kg/m3 after conversion to liquid. This contributes to its final size which is smaller and lighter than the others.

After extrusion, the small size and lightweight comes in handy especially during application. Electronic device manufacturers don’t have to struggle about making heavier and larger machines to accommodate heat sinks.

  • Cost-Effective

Costs are an important factor to consider in mass production. Aluminum fits the bill with its affordability and ready availability. Besides, it lowers non-recurring engineering costs, therefore making their overall production costs lesser.

  • Thermal Conductivity

Aluminum alloys 6063 and 6061 have desirable thermal conductivity scores between 166 and 201 W/(m.k). Within them, there are valence shells that hold three electrons which make random movements and are loosely inclined towards the nucleus.

The electrons carry charge that facilitate electricity conduction. They move in harmony once current is detected. This action ensures that higher thermal conductivity is achieved.

  • Can be anodized

Sustainability must be looked into when manufacturing heat sinks. Aluminum can be anodized to make the heat sink more corrosion resistant and with better adhesion.

What is aluminum heat sink extrusion?2023-10-03T04:25:12+00:00

This is a heat sink manufactured through aluminum extrusion process to be used for heat dissipation in an array of electronic devices. The heat sink formation process is complete after aluminum is pushed through a special opening by force in a single strike. The punch must be sudden for proper heat sink formation.

To achieve desired results, we use a cross sectional die structure to give the heat sinks specific shapes. The manufacturing requirements for heat sink extrusion make them suitable for mass production. This has helped us cut on non-recurring engineering costs and therefore allocate more funds on quality assurance.

We reckon that proper heat management is important for electronic devices especially in critical industries like the medical industry. We use high quality dies and aluminum ingots for production. Instead of aluminum scrap, we manufacture heat sinks using top standard aluminum billet. This helps produce proper heat sinks that will accomplish effective heat dissipation.

What is the max. width you can extrude?2023-12-05T03:13:45+00:00

The max. width that we can do depends on the exact profile shape. Please send us your CAD drawings for a brief check firstly.

The wider the cross-section, the larger the extrusion press is needed. Our largest capability is with width 750mm for some shapes. Many construction companies will be concerned about the maximum width that an aluminum extruder can do. For example, the width of the aluminum formwork usually needs to be at least 300mm.

In cooperation with top institutions in China, we offer and produce aluminum extrusions with a maximum section width of 1100mm. We are working with many famous transportation companies on large size aluminum extrusions.

Can you provide machining service for extrusion order?2023-05-04T04:13:17+00:00

We have an aluminum fabrication shop to provide CNC machining and fabrication service.
The material is not only aluminum extrusion products but also aluminum sheet panels. Please send us your CAD and 3D drawings for a quote.

Click Aluminum Machining / Fabrication to know more.

CNC Machining On Heatsinks

What anodizing colors can you produce?2022-07-10T01:37:15+00:00

Click Anodizing Colors For Clear Anodizing & Dyed Anodizing produced by FONNOV ALUMINIUM.

What is the difference of 6060 and 6063?2022-04-30T01:49:30+00:00

Some countries prefer to use aluminum extrusion with alloy 6060 for production, and some countries perfer to use 6063 instead. The mechanical properties are nearlly the same. Click 6060 VS 6063 to see details of the two popular aluminium alloy for production.

6063 aluminium ingot for extrusion-fonnov


Profile Length for Delivery2023-02-28T03:34:32+00:00

Max. L=5800mm for 20 container ( choose 40 container if L>5900mm)

Max. L=3000mm for LCL goods by sea (contact shipping agent for goods with L>3000mm, some shipping company accept with a higher cost.)

Max. L=2000mm for EXPRESS


What is the difference of 6063T5 and 6063T6?2022-04-30T01:50:09+00:00

Different temper is with different mechanical properties and prices, as well as different requirement in application. Click 6063T5 VS 6063T6 to see the differences of T5 and T6 of 6063 aluminum alloy, which can help you to select the material that you need for production.



What should I provide for a quote from you?2023-02-28T03:35:38+00:00

▹Drawing is necessary. CAD drawing for aluminum extrusion request. CAD and 3D drawing for machining and fabrication request.

▹Required quantity / aluminium alloy and temper / surface finishing / dimension tolerance / quality standard.

The information above is all needed for the price. Please let us know more about your aluminum project.


We will answer your EMAIL within 1 day!

Browse FONNOV Aluminium Categories

Standard & Custom Aluminum Extrusions

  • Aluminum Rods (Round Bars)

  • Aluminum Flat Bars
  • Extruded Aluminum Angles

  • Extruded Aluminum Beams
  • Extruded Aluminum Channels
  • Extruded Aluminum Trims

Custom Aluminum Extrusions For General Industries

  • Aluminum Extrusions for Vessels and Boats

  • Aluminum Extrusions for Airport

  • 5083 Aluminum Extrusions

Aluminum Heatsink Extrusion Manufacturer in CHINA

FONNOV ALUMINIUM is one of the leading aluminum heatsink extrusion profile manufacturers and suppliers in China. We also provide value-added CNC machining, fabrication and assembly service for your aluminum heatsink.

Reach out to us now so we can help you in producing your ideal extruded aluminum heatsink, aluminum heatsink extrusion and machined aluminum heatsink, etc.


Let’s get started from your ideas.

We will answer your EMAIL within 1 day!

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