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Phosphate Coating Service Companies

IQS Directory provides a comprehensive list of phosphate coating companies and suppliers. Use our website to review and source top phosphate coating services with roll over ads and detailed product descriptions. Find phosphate coating companies that can provide phosphate coating services to your companies specifications. Then contact the phosphate coating companies through our quick and easy request for quote form. Website links, company profile, locations, phone, product videos and product information is provided for each company. Access customer reviews and keep up to date with product new articles. Whether you are looking for information about the phosphate coating process, phosphate fluoride coating services, phosphate coating weights, or customized phosphate coating services of every type, this is the resource for you.

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Alpha has a solution for any aluminum part finishing need. Making parts look great and last longer is what we do! We offer high volume and job shop finishing services as well as lot tracking, testing and statistical process data. Alpha Metal Finishing Company is dedicated to providing the very highest quality aluminum anodizing and chromate conversion services.
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For over 30 years, the team at U.S. Plastic Coatings Corporation has been setting the standard for quality plastic coatings to metal processes, including phosphate coatings and similar processes. They are also able to boast about their quick turn-a-round times and affordable prices, which is why they are a popular choice in a variety of industries. Call them today to see how they can help you!
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At our company, our commitment to Total Quality Management means that we pride ourselves in developing a synergistic and symbiotic relationship with each customer. We are determined to provide the highest quality phosphate coating to our customers. At Applied Plastics, we don`t believe in quality as a department or line function, we believe quality is a way of life!
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Industry Information

Phosphate Coating

Phosphate coating is the process of chemically converting the surface of a material referred to as the substrate (typically a metallic element) into a layer of a non-metallic, crystalline conversion coating. Phosphate coating is an important process in many industrial contexts.

There are four main reasons that phosphate coating services are utilized: one, in order to enhance the lifetime of organic coatings; two, in order to provide superior paint or solid film bonding; three, to increase the corrosion-resistance of the material; and four, to provide an excellent lubricant and drawing compound base. Due to the multiple purposes of phosphate coatings, there are a correspondingly vast amount of applications and industries that they are used in, including: automotive, for use in the coating of various power transmission components; industrial manufacturing, to coat castings, iron and steel-based industrial parts; military, for the coating of various defensive moving and threaded parts according to military specifications (MIL-Spec); and aerospace, for adhesive and defensive coatings of various aviation components. Also used in the nuclear energy industry, there are many advantages that come from utilizing phosphate coating services including: improves friction, increases corrosion-resistance and provides both rust-inhibiting and anti-galling characteristics.


Phosphates refer to a salt (also called an ester) of phosphoric acid and typically include three main types: manganese, zinc and iron. In the general process of phosphate coating, phosphate salts (any of the three) are dissolved into a solution of phosphoric acid. Next, the substrate is immersed within the solution, causing a reaction to take place between the chemicals and the metal. This chemical reaction accomplishes four things: one, it locally depletes the hydroxonium ions; two, it raises the pH; three, it causes the dissolved salt to fall out of the solution; and four, it causes the dissolved salt to be precipitated on the surface of the substrate. While the general process remains basically the same, there are some differences between phosphate coatings depending on the type of phosphate salt that is used in the process. In manganese phosphating, the resulting coat specifically exhibits exceptional oil absorptive characteristics and is often achieved in tumbling barrels. In zinc phosphating, heavy zinc phosphates are commonly used in order to drastically improve the corrosion-resistance of the substrate. Lastly, in iron phosphating a lot depends upon the receptiveness of the substrate's surface, which can affect whether the coating is very fine, or it is coarse. This type of coating is different from metal finishing because it does not focus on the aesthetic appearance of the finished piece.

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