Waterproof magnesium heat sink

Basic Information:

Place of Origin:

Zhengzhou China (Mainland)

Brand Name:



ISO9001:2000. SGS

Model Number:

AZ31B AZ61

Minimum Order Quantity:

100 Piece



Packaging Details:


Delivery Time:

25-30 days

Payment Terms:

T/T, L/C, Western Union, MoneyGram, Paypal

Supply Ability:

1,000,000 Kilogram per month

Detail Information


Magnesium Alloy Heatsink


AZ31B AZ61 AZ91D


Magnesium Alloys


Aviation,Electronic,Industrial & Chemical





Alloy Or Not:



+/-1%, +/-0.02MM

Tech Process:

Extrusion,Deburring,CNC Machining Checking & Packing


As Per Drawings

Process Service:

Ending,Welding, Punching,Cutting & Machining

Surface Treatment:

Painting,Powder Coating,Polishing & Electroplating



HS Code:


High Light:

AZ61 Mag Extruded Aluminum Led Heatsink, AZ31B Mag Extruded Aluminum Led Heatsink, 95% Mag aluminum heatsink for led light

Product Description

Cold Forging Waterproof Magnesium-Based Alloy Heat Sink AZ31B AZ61


Heat sinks are thermally conductive components or devices that absorb and dissipate heat generated by electronic components. Heat sinks cool high-powered devices to prevent overheating. The reliability of electronic components is generally reduced by the square of an increase in temperature. For example, doubling the ambient temperature around a component renders the component 25% less reliable than at the lower temperature. Heat sinks are therefore essential in dissipating generated heat and improving component longevity.

Moreover, the performance of magnesium alloy die castings is excellent, and the effect of substituting steel, aluminum alloy, plastic and other parts under normal conditions of use is very good. While realizing the light weight of the product, it also enables the product to have excellent special functions, and after the magnesium alloy die casting is scrapped, it can be directly recycled and reused, which meets the requirements of environmental protection. Therefore, magnesium alloys with excellent comprehensive properties are known as the "21st Century Metal" and are widely used in automobiles, computers, communications and other broad fields. Weight: magnesium alloy is 36% lighter than aluminum alloy, 73% lighter than zinc, and 77% lighter than steel.

Specific strength: magnesium alloy is equivalent to aluminum alloy and steel, much higher than fiber reinforced plastics.

Wear resistance: the wear resistance of magnesium alloy is much higher than that of die-cast aluminum alloy A380.

Damping performance: magnesium alloy is 30 times higher than aluminum alloy.


Heat sinks are thermally conductive components or devices that absorb and dissipate heat generated by electronic components. Heat sinks cool high-powered devices to prevent overheating. The reliability of electronic components is generally reduced by the square of an increase in temperature.

Product Name

Heatsink; Magnesium heat sink; Extruded heatsink; Heat sink extrusion


AZ31B AZ61

Detailed Size

As per customers' design

Max Aspect Ratio( Fin Height / Fin Gap)

More than 20 times aspect ratio heatsink can be extruded by 800 Tons--6000 Tons extruding machines by most advanced technology

Max Width

Ultra wide extruded heatsink can be made by our unique friction welding technology

Standard Mold Qty

30,000+ sets standard molds in stock for your option,saving your R&D cost

Sample Service

Samples with differernt sizes are availabe for prototypes test within 1 week

Production Process

Profiles Extruding---Cutting---CNC Machining(Milling, Drilling,Tapping)---Deburring--- Cleaning--- Inspecting--Packing

Surface Treatment

Degreasing,(Black) Anodizing,Sand Blasting,Painting,Chromating and Laser marking

Reference Standard

GB/T 3190-2008, GB/T 14846-2008, ISO 2768


More than 20 years professional manufacturing experience


LED Lighting,Inverter,Welding Machine,Communication Device,Power Supply Equipment,Electronic Industry,Thermoelectric Coolers/Generator,IGBT/UPS Cooling Systems,etc.

Magnesium (Mg), the 12th element on the periodic table, is a basic earth metal, ahead of aluminum (AL).Magnesium is one of the most abundant light metallic elements on earth, and is widely found in magnesite (magnesium carbonate), dolomite (calcium magnesium carbonate) and carnallite (magnesium potassium chloride hydrate).
Magnesium alloys are well-known for being the lightest structural alloys. They are made of magnesium, the lightest structural metal, mixed with other metal elements to improve the physical properties. These elements include manganese, aluminium, zinc, silicon, copper, zirconium, and rare-earth metals.
In addition, the low density, low melting point, low dynamic viscosity, low specific heat capacity, low latent heat of phase change and low affinity with iron of magnesium alloys make it have low melting energy consumption, fast filling speed, fast solidification speed, and practicality. The advantages of short die-casting cycle and long mold life are very suitable for forming and processing using modern die-casting technology to directly produce thin-walled and near-net-shaped components with complex shapes.

Waterproof Magnesium Heat Sink AZ31B AZ61 Cold Forging Heat Sink

  • 1.What characteristics make a heatsink a good one?

    A: High heatsink surface;Good aerodynamics;Good thermal transfer within the heatsink;Perfect flatness of the contact area;Good mounting method.

  • 2.How long is your delivery time?

    A:Generally it is 5-10 days if the heatsinks are in stock. or it is 30-40 days for mass production

  • 3.Do you provide samples ?

    A: Yes, we could offer paid sample for prototypes testing if there is stock.we have thousands of standard heatsinks with different sizes and shapes.

  • 4.What is your terms of payment ?

    A: Usually 100% payment before shipment. For regular customers,the terms can be nogotiated.


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