Exploring the Differences: Regular Anodizing vs. Architectural Anodizing By: Anna Fredericks

Anodizing is a process that enhances the corrosion resistance and aesthetic appeal of metal surfaces. While regular anodizing and architectural anodizing share the same fundamental process, they are tailored to serve different purposes and exhibit varying characteristics. In this blog post, we will delve into the distinctions between regular anodizing and architectural anodizing, shedding light on their unique features and applications.

Regular anodizing, also known as standard anodizing, is primarily focused on functional enhancement. It involves the electrochemical process of creating a protective oxide layer on the surface of metals, typically aluminum. This layer not only fortifies the metal against corrosion but also provides a base for secondary processes such as painting or adhesion of adhesives. Regular anodizing is commonly employed in industries where the primary concern is the durability and longevity of the metal, such as in automotive components, consumer electronics, and industrial machinery.

Most anodizing on machined parts falls into two commonly specified types: Type II (or “regular”) sulfuric anodizing and Type III Hardcoat or “hard” sulfuric anodizing. The Type II & III designations are derived from the common Military specification, MIL-A-8625 (there is also a Type I anodizing, but this is done using environmentally-unfriendly chromic acid, and it is rarely specified these days).

Both Type II and Type III “hard” anodizing yield very hard coatings. Type III “hard” anodizing, performed at a lower temperature, is more costly and slightly harder than Type II. However, practical differentiation requires specialized equipment. Type III, notably thicker than Type II at typically .002″ vs. .0006″ respectively, exhibits greater resistance to scratching and heavy wear.

Another type of anodizing, commonly referred to as “architectural” anodizing, mirrors Type II anodizing but utilizes metallic ion dying, which is entirely colorfast in sunlight. Architectural anodizing is specifically tailored for aesthetic and architectural applications. Unlike regular anodizing, architectural anodizing places a heightened emphasis on color consistency, surface uniformity, and overall visual appeal. This process results in a durable, weather-resistant finish that is well-suited for architectural elements, building facades, window and door frames, and other exterior applications. The architectural anodizing process is meticulously designed to meet stringent aesthetic standards while ensuring long-lasting protection against environmental elements.

Aerospace Metals stands at the forefront of providing both regular anodizing and architectural anodizing services to meet diverse industry needs. With a focus on precision, reliability, and superior quality, Aerospace Metals has garnered a reputation for exceeding customer expectations. Leveraging advanced anodizing techniques and state-of-the-art facilities, Aerospace Metals delivers exceptional results, earning the trust and satisfaction of our valued clientele. Our commitment to prompt turnaround times further solidifies our position as a trusted partner in the metal finishing industry.

In conclusion, while regular anodizing prioritizes functionality and protection, architectural anodizing places a premium on aesthetic appeal and durability. Aerospace Metals’ comprehensive offerings in both regular and architectural anodizing ensure that our customers receive top-tier solutions tailored to their specific requirements. With a track record of excellence, Aerospace Metals continues to set the benchmark for quality and reliability in metal finishing services.