FAQ's

You will get efficient and thoughtful service from Golden Jash.

Please click on a topic/question below for answers to our most FREQUENTLY ASKED QUESTIONS

PLACING AN ORDER:

How do I place an order at your website?

I need a heatsink that is wider/narrower or taller/shorter, can you create a custom heatsink for me?

Do you have any more profiles available that are not currently listed on your website?

What is your returns policy?

ADD-ON SERVICES:

Do you offer machine work services, such as drilling/tapping/face milling?

I would like a CAD file of your extrusion so I can create a drawing to send you, are these available?

Do you offer anodizing?

SHIPPING:

I want my order to ship using my own carrier account, how do I do this?

I did not receive a valid shipping option (only prompt to use my own carrier)?

Do you ship outside the United States?

What do I do if my heatsink is damaged, lost of stolen during shipment?

TECHNICAL QUESTIONS:

What is your standard cut length tolerance and can I specify a special tolerance?

What are the °C/W/3" ratings for your heatsinks?

Can you give me advice on which heatsink will work best for my project?

I received my heatsink and the base is bowed, is this normal?

Placing an order

Please follow the instructions below, or give us a call to order by phone.

(any reference to 3.5" length is only an example):

1.  Choose your required profile width from the selections on the left.  (To download a document with detailed specifications for all of our available profiles please click here.)

2.  Select the "Choose Options" link.

3.  Choose the required finished length in inches (choose next highest inch if you need to specify a length off the whole inch) ***PLEASE NOTE***Our standard tolerance on the length cut is +.020/-.000”.  We can hold a +/- .010” or even a +/- .005 if specifically requested.  If you require a special tolerance, please note this on the order either in the notes or in the "specific cut length" field.  Of course you can always just give us a call or email us if you have any questions on cut to length tolerances. .

4.  If a more specific length is needed, for example a 3.5" length, select 4" length, then type 3.5" in the specific cut length field.

5.  Select the quantity of heatsinks to be cut to your required length.

6.  Add to cart.

back to top of page

 "Custom" Heatsinks

We can, in some cases, customize our existing profiles to produce the width needed by performing vertical cuts to our profiles ($50.00 minimum charge, please contact us for quote). Please do not use the "specific cut length" field to request vertical cuts, this field is for specific cut lengths only, doing so will delay your order.

We can also quote the addition of machining services to our heatsinks to your specifications, please contact us for a quote.

We can cut any of our profiles to any length up to 75". 

In some cases, to create the perfect heatsink for your application, the purchase/creation of an extrusion die is required.  If you feel your volume requirements warrant the expense of tooling, please contact us for quote.  This is typically done for large quantities (1,500 lbs and over) with orders placed on a regular basis.

We purchase our new dies and add them to our collection based on customer feedback and requests.  

back to top of page

Additional Profiles

All of our currently available profiles are listed on our website.  We add profiles to our website periodically, based on customer requests/feedback.  To download a document with detailed specifications for all of our available profiles please click here. 

back to top of page

Returns

Because we custom cut our extrusions to length per order, please be sure your measurements for custom cuts are accurate. If you receive something other than what you ordered, contact us at 1.800.901.2395 or sales@heatsinkusa.com and we will arrange an immediate replacement or refund of all charges. However, if you are requesting an RMA on heatsinks that have been received as ordered; these will be subject to a 30% restocking fee and return shipping will be at the customers expense. Any handling or cut fees are non-refundable.  If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.   Or you may contact us to initiate a return.  

NOTE: INSPECTION AND RETURNS – Buyer shall inspect product within fourteen (14) business days of delivery. Prior to returning any product to Seller, Buyer shall obtain a return material authorization (RMA) from Seller along with Seller’s specific instructions. Seller will not accept any product returned without a proper RMA number issued by Seller.

 back to top of page

Damaged, Lost or Stolen Product

Question: What do I do if my heatsink arrives damaged, is lost in transit or stolen?

HeatsinkUSA’ s packaging department uses extreme care to ensure the integrity of the heatsink by wrapping our product tightly and securely to protect them. Although it is not common, damage can occur in all methods of shipping.

We ask that you report the receipt of a damaged product within 48 hours of delivery and do not discard the damaged item or its packaging. Once you notify us that your product is damaged, HeatsinkUSA will request a photo of the damage material including packaging. HeatsinkUSA will then file a claim with the shipper. Failure to report damages in this time frame could result in a claim being denied by the carrier. If this occurs, HeatsinkUSA cannot accept responsibility for the damages.

The claim processes vary, depending on shipping carrier, and typically take an average of 14-20 business days. Please do not discard the damaged product or the packaging. Typically, the shipper will be dispatched to pick the item up for inspection and processing. We'll need your help by making it available for pickup on the scheduled date and time.

HeatsinkUSA is not responsible for reimbursement of any labor costs or project delays that may occur due to the receipt of damaged goods. The standard return policy will apply.

HeatsinkUSA is not responsible for reimbursement of material, labor costs and/or project delays that may occur due to loss of any packages while in transit. 

Furthermore, we are not responsible for reimbursement of material, labor costs and/or project delays that may occur due to theft of any packages after the product has been delivered. 

 back to top of page

Contact us to discuss your requirements of Aluminium Heatsink Extrusion Profile. Our experienced sales team can help you identify the options that best suit your needs.

Machining Heatsinks

Question:  Do you do any machine work to your heatsinks?

Yes, we now offer quality machine work at affordable prices.  Contact us today for a quote.  Please provide us with the material required, a drawing with detailed dimensional information and the quantities you would like to have quoted.  Please also provide a contact phone/email in the event the machinist has questions on the drawing.

******  PLEASE NOTE:  HEATSINKUSA DOES NOT OFFER ANY KIND OF FINISHING (ANODIZING, POWDERCOAT, ETC.) If your drawing includes finishing specifications, the pricing quoted WILL NOT INCLUDE finishing, so parts will need to be sent elsewhere for this service.  ****** 

back to top of page

  CAD Files

If you need a CAD file to aid in the creation of a drawing for an RFQ submission, please contact us and provide an email address to send it to.

back to top of page

Anodizing

No, we no longer offer anodizing as a add-on service due to lack of providers in our area.

back to top of page

Shipping using your own UPS or FedEx account

If you would like us to use your shipping account (UPS or FedEx) to ship your order, please choose the "I have a UPS or FedEx account...." shipping option during checkout.  Prior to completing your order, you can leave your carrier information in the Order Comments/Instructions field.  You may also call 1-800-901-2395 or send us a contact form with this information.

back to top of page

Only shipping option is "I have a UPS or FedEx account...."

If you did not receive a quote for UPS or USPS shipping, it is most likely due to the total weight of your order exceeding the carrier's weight limits.  If this happens, and you do not have a UPS or FedEx account number, please contact us for a quote for shipping.  Also, check your address, an incorrect zip code will result in the carriers not being able to calculate your shipping.

back to top of page

International shipping

We can ship to virtually any address in the world that the United State Postal Service will allow. There are weight and size restrictions, and some products cannot be shipped to certain international destinations.  

Please also note that the shipping rates for our heatsinks are determined by weight and size.  The weight per inch of our heatsinks is provided in the specification listing for each profile, or on our available profiles sheet. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

back to top of page

Shipping costs

Although aluminum is typically thought of as a "lightweight" metal, this is not generally the case with heatsinks and they can weigh more than one may think (our profiles can weigh up to 1 lb/inch).  Shipping costs are calculated while in your cart by sending the weight/size information to the various carriers, then they in turn provide a shipping cost based on that information.  

back to top of page

 Cut Tolerances

Our standard tolerance on the length cut is +.0200/-0.00”.  We can hold a +/- .010” or even a +/- .005 if specifically requested. (This may result in additional cut charge)  If you require a special tolerance, please note this on the order either in the notes or in the "specific cut length" field.  Of course you can always just give us a call or email us if you have any questions on cut to length tolerances.

back to top of page

°C/W/3" Information

We have provided Approximate °C/W/3" ratings for each profile which can be found in the specifications on the product page.  They are also included in our currently available profiles sheet. These approximate °C/W/3" values are based on natural convection: 70 C temp rise above ambient, based on a single 1" (25.4mm) square heat source centered on the heat sink. If you have distributed loads, then you can expect about a 10% better performance in natural convection and 20% better performance in forced convection.  We STRONGLY recommend customers perform their own thermal testing in relation to your specific project.  HeatsinkUSA is not responsible for any damage to property, electronics, machinery, etc. caused by insufficient dissipation of heat.

www.heatsinkcalculator.com has also provided an online thermal calculator that may assist you in your calculations:  

https://www.heatsinkcalculator.com/calculator_heatsinkusa.html

back to top of page

Project advice

HeatinkUSA does not offer specific advice regarding the thermal properties of our heatsinks or how they can or should be used in your specific application.  Our heatsinks are used in a huge variety of projects and applications and we do not have expertise in the numerous uses for our heatsinks.  We do not have a thermal engineer on staff. 

We have provided Approximate °C/W/3" ratings for each profile which can be found in the specifications on the product page.  They are also included in our currently available profiles sheet. These approximate °C/W/3" values are based on natural convection: 70 C temp rise above ambient, based on a single 1" (25.4mm) square heat source centered on the heat sink. If you have distributed loads, then you can expect about a 10% better performance in natural convection and 20% better performance in forced convection.  We STRONGLY recommend customers perform their own thermal testing in relation to your specific project.  HeatsinkUSA is not responsible for any damage to property, electronics, machinery, etc. caused by insufficient dissipation of heat.

www.heatsinkcalculator.com has also provided an online thermal calculator that may assist you in your calculations:  

https://www.heatsinkcalculator.com/calculator_heatsinkusa.html

back to top of page

 Heatsink "Curve"

Heatsinks, because of the way they are produced (extrusion), are never perfectly flat.  HeatsinkUSA heatsinks are produced at an ISO9001 certified extruder that strives to stay well within standard industry tolerances for flatness, twist, etc.  If your application requires the base of the heatsink to be perfectly flat, face milling is recommended.  We can provide a quote for this if requested.  Please contact us if you wish to submit an RFQ for this or any other additional machining services.

back to top of page

Right Manufacturing Solution for Aluminum Heat Sink

Despite being small, the heat sink serves a very critical role in appliances. For instance, computers tend to build up a lot of heat during use. The heat sink in the CPU functions to cool it and thereby extend the computer’s lifespan. We can also find a heat sink in the tube of a TV set where the power supply is light. Aluminum is an excellent material option when choosing to make a heat sink. Here is an extensive insight into how we at Creatingway, help you pick the right manufacturing solution for an aluminum heat sink.

Material Selection for Heat Sink

There is an array of material options for the heat sink. One can choose to make it using silver, aluminum, copper, and steel. The different materials differently influence the intended heat dissipation effect of the heat sink. Silver emerges as the best from thermal conductivity analysis. It is, however, not the material of choice owing to the being quite costly. The second best option falls to aluminum and it ends up being our favorite material. Regardless of the cost or thermal conductivity, it emerges as the most inclusive material. Simply put, it is cheap and light.

Principle of the Aluminum Heat Sink

The aluminum heat sink works via a rather simple mechanism. It has a large surface area and therefore quicker heat dissipation. It thus plays offers a good heat transfer effect owing to its quick heat absorption and heat loss.

Common Manufacturing Options for the Aluminum Heat Sink

Extrusion of Aluminum Heat Sink

The extrusion process is ideal for the mass creation of the aluminum heat sink. This is since it takes little to invest, has a low production cost, and a short development cycle. Aluminum 6063 is the perfect aluminum grade for the extrusion process. The working principle involves heating the aluminum block to between 520-540 degrees Celsius under high pressure. We then allow the molten aluminum liquid to flow through the extrusion mold with grooves. This enables us to create the heat sink embryo. Afterward, we cut the heat sink embryo, the profile grove, and any other processing that makes up the heat sink. Unfortunately, making the heat sink using extrusion has its cons.

There is a certain range in which the fin thickness and length ratio must lie. We refer to this as the pin-fin ratio. It makes up one of the main standards for testing aluminum extrusion tech. The greater the ratio, the greater the effective cooling area of the heat sink. It is, however, difficult to improve the heat dissipation area within the cramped space. Therefore, the heat dissipation effect of aluminum extrusion is not so ideal. We mainly use the aluminum extrusion process in heat sink processing to make columnar or lamellar fins.

Machined Aluminum Heat Sink

Aluminum machining entails an array of processes. A few of them include drilling, milling, turning, and grinding. We can flexibly apply this process depending on the structure of the part. Its use also depends on the function of the structural part like heat sink grooving, plate forming, and bottom surface dressing. Its major con is the relatively fast tool wear and the need for human involvement in machine management. This takes a certain amount of labor cost.

Die Casting of the Aluminum Heat Sink

The principle of aluminum heat sink die casting is quite similar to injection molding. We first heat the aluminum alloy into a liquid at high pressure. Depending on the model, the die casting machine starts to work by cooling and solidifying the molten metal into the desired shape. We can integrate this process into a dense, thin, or complex fin design. Its major con is that it affects the conduction effect and mechanical features of the material. It also limits the nuclear thermal conductivity.

What Are the Common Surface Finish Options for Aluminum Heat Sink?

Sandblasting

Sandblasting greatly impacts the surface of the heat sink under high pressure. It is excellent for the removal of dirt and knife lines from the surface of machined aluminum heat sinks. We also use it to make parts look shinier and uniform. This improves the part’s mechanical features and lowers the incidence of fatigue on the heat sink surface.

Brushed

Brushed surface treatment imparts a more metallic finish and makes it more fashionably sensible. Apart from the aesthetic role, it also increases the heating area of parts to a certain extent. This serves to promote the use efficiency of the aluminum heat sink.

Anodization

Anodization is one of the most common surface treatment methods in use today. We impart a layer of protective film onto the surface of the part using this method. This not only makes it scratch resistance, but it also ends up wear-resistant. The protective function serves to overcome the surface hardness of aluminum alloy defects.

Electroplating

Electroplating is another protective and aesthetic process we can perform on aluminum heat sinks. It improves the reflection, wear resistance, and electrical conductivity of the parts. At Creatingway, we hope to support your custom designs and needs. Contact us now if you have any inquiries.

Creatingway concentrates on CNC machining manufacturing, prototype machining, low-volume manufacturing, metal fabrication, and parts finishing services, providing you with the best support and services. ask us one inquire now.

Any questions or RFQ for metal& plastic technology and custom machining, welcome to contact us below

Call +86-0(755)-89492523 or send an inquiry to us

Welcome to visit us, For any metal and plastic design and machining questions, we are here to support you. Our services email address:sales@creatingway.com

The company is the world’s best Aluminium Machining Manufacturing Plants supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.