Anodizing Service: Solutions For Anodizing Aluminum Parts

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Surface finishing is the next step in the manufacturing process after a product is functionally finished. A product’s surface finishing is crucial to its durability and aesthetic appeal. However, anodizing service is a well-respected technique when working with aluminum products. If you are interested in using this process, you may want to find out how much it costs to anodize aluminum goods.

The term “anodizing aluminum products” shouldn’t be foreign to those with a basic understanding of science, particularly chemistry. Nonetheless, this piece was created to demystify the procedure if you find it to be complicated. It will cover the fundamentals of anodization, elements that affect the cost of anodized aluminum, and procedural advice. To put it briefly, this article will walk you through the procedure.

Are you prepared to learn a few facts? Let’s tackle it head-on!

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Introduction to Anodizing Aluminum

For those without a background in chemistry, the concept of anodizing aluminum may seem unfamiliar. This section aims to elucidate the fundamentals of this electrochemical process before delving into the specifics of aluminum anodization.

What is Aluminum Anodizing?

Aluminum anodizing service is an electrochemical procedure wherein an aluminum surface is coated with a resilient oxide layer. The outcome of this process enhances the aluminum’s durability, resistance to corrosion and wear, and improves its aesthetic appeal. Unlike other finishing techniques, anodizing aluminum involves the incorporation of protective layers into the material during the process.

Types of Anodizing Processes

The anodizing service of aluminum parts encompasses three distinct processes, each characterized by varying degrees of coating. These processes rely on specific electrodes, electrolytes, and electrical energy.

Type 1

Referred to as the “light” type, Type 1 anodizing of aluminum involves immersing the aluminum part in a tank containing chromic acid, with the aluminum acting as the anode. Passing current through the chromic acid causes positive aluminum particles to depart from the surface, leaving microscopic grooves. These grooves, when oxidized, give rise to the oxide layer. Type 1 anodized aluminum parts exhibit enhanced heat and corrosion resistance compared to their unoxidized counterparts.

Type 2

Similar to Type 1, the Type 2 process utilizes sulfuric acid instead of chromic acid. The higher potency of sulfuric acid results in deeper grooves and a thicker oxide layer. Type 2 aluminum parts possess superior paint retention capabilities due to their deeper and easily filled grooves.

Type 3

Also known as hard anodizing service, Type 3 involves the use of higher voltage and strong sulfuric acid. This process is ideal for creating heavy-wear parts, offering increased durability and resistance to wear and tear.

Advantages of Anodizing Aluminum Components

Among the various surface finishing methods applied to diverse products, particularly those made of aluminum, anodizing service stands out with several notable benefits. In comparison to alternative techniques like painting, anodizing service offers distinct advantages, as outlined below.


The anodizing process results in the formation of hard aluminum oxides, surpassing the base metal in hardness. By increasing the oxide layer’s surface area during anodization, the part becomes significantly harder. In Type 3 anodizing, hardness levels can even approach those of certain metal cutting tool steels.

Resistance to Chemical Reactions

Anodized aluminum surfaces exhibit resistance to chemical reactions. The coating stabilizes the surface, imparting an unreactive property that persists even at high temperatures. The oxide layer remains steadfast and unyielding in the face of various chemicals.

Paint Retention

Anodizing service ensures that the color on aluminum parts remains intact, as the pores retain the anodized color. This quality prevents peeling, ensuring that normal mechanical actions, such as peeling, do not lead to the scratching off of color.


Anodizing service provides an eco-friendly process, producing non-toxic by-products. This environmentally conscious aspect sets it apart from other industry techniques, contributing to a more sustainable approach.

Adhesive Options

The anodized surface accommodates adhesives, allowing different aluminum parts to be effectively glued together. This enhances the versatility and ease of assembly for various applications.


Anodizing service provides a superior surface finishing technique for aluminum parts when considering aesthetics. It delivers a visually pleasing and distinctive finish that enhances the overall appearance wherever it is employed.

Factors for the Cost of Anodizing Aluminum Parts

Opting for anodizing service over painting for superior surface finishes on aluminum parts is a common choice, but the decision often hinges on the cost involved. Various factors contribute to the overall cost of anodizing aluminum parts, and understanding these elements is crucial. Here are the key considerations influencing the cost of anodizing aluminum parts:

Coating Thickness

The thickness of the oxide layer on the aluminum part’s surface is a pivotal factor in determining the cost of anodizing service. Surprisingly, while one might expect thicker coatings to incur higher costs, the reverse is true. Thinner or narrower coating ranges are more expensive due to the increased difficulty in control. Achieving precision with thinner oxide layers demands expertise, professionalism, and, consequently, leads to higher anodizing costs.

Types of Anodizing Process

The chosen type of anodizing process significantly impacts the overall cost. Type 1 anodizing is the most economical, utilizing affordable materials like chromic acid with lower energy consumption. Conversely, Type 3 anodizing is costlier due to the use of more expensive materials, such as sulfuric acid, and higher energy consumption. Generally, the higher the type of anodizing process, the greater the cost.

Dimension and Components

The dimensions of the chosen material play a vital role in cost determination. Larger dimensions result in a greater surface area, requiring more materials and facilities for the process. Additionally, an increase in the number of components leads to higher labor and time requirements, directly influencing the cost of anodizing aluminum parts.


Racking, a crucial process for transporting workloads through stages and ensuring a secure electrical connection, impacts anodizing costs. Different types of racking, such as weld, clamp, and bolt racking, are available. The choice of racking method affects both quality and cost. Manufacturers often opt for cost-effective methods to maximize yield while adhering to specifications. Racking also influences the number of parts processed simultaneously, potentially raising the overall price.

Extra Services

Additional processes to enhance efficiency or achieve specific aesthetic goals come with additional costs. If you require services like plugging or masking holes, expect an extra charge for these supplementary processes.

For competitive prices on anodized aluminum parts, Sungplastic is your ideal solution.

Guidelines for Improving Anodizing

Although the anodizing process may appear intricate, it is quite manageable. Here are some valuable tips to optimize the outcomes of the process:

Know Your Alloy

Ensure that the chosen aluminum alloy aligns with the one employed in the incoming parts. Different alloys necessitate distinct surface finishing techniques. Thus, understanding your alloy is crucial for a successful anodizing process.

Remove Oils and Fingerprints

The presence of oils, debris, and fingerprints can jeopardize the quality of the finishing. Conduct a thorough inspection of the materials and eliminate any oils, debris, or fingerprints to enhance the likelihood of success in the anodizing process.

Stay Current in the Field

While it may not directly impact the procedural aspects, staying informed about the latest developments in the field is beneficial. Keeping up with changes in the anodizing process ensures that you remain well-informed and adaptable to any advancements that may enhance the efficiency of the procedure.

Anodizing Service at Sungplastic

Aluminum parts can have their surface finishes made perfectly by the electrolytic process of anodizing. Aluminum parts are best suited for the process when anodized. This article has taught you the basics of anodizing aluminum and how much it costs to anodize aluminum components. But, it is preferable to think about employing an anodizing aluminum service if you want the best results. Here’s where we get to have fun. We can deliver at the best possible standard because we have the tools and the experience.

You can get the best aluminum anodizing services from us. This includes an easy quotation process and a short lead time. Should you be concerned about the cost of anodizing service, rest assured that we operate at a minimal expense, alleviating your concerns.

Additionally, we offer other services, such as metal injection molding, metal stamping, CNC machining, die casting and more.

Consider Sungplastic when you want high quality at an affordable price and seamless operation.


Is aluminum anodized at a high cost?
Indeed, the anodizing process is costly. However, a number of variables, including coating thickness, anodizing types, additional services, and the dimensions and components of the aluminum materials, affect the cost of anodizing aluminum parts. The article provided an explanation of these elements.

Does aluminum anodize at home?
Aluminum can indeed be anodized at home. You currently possess the required equipment, including high-voltage, steady electricity, tanks, and chemicals. For optimal quality and aesthetics, outsourcing services is the best option.

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