Aerospace and defense parts can’t afford to fail. Every component must operate reliably in demanding environments, from moisture and chemicals to extreme temperatures. That’s why anodizing has become such a vital aerospace surface enhancement. By building a protective oxide layer on aluminum and metal parts, anodizing strengthens surfaces, extends component life, and ensures consistent performance. It also improves appearance, offering both functional and aesthetic benefits.

What Is Anodizing?

Anodizing is an electrolytic passivation process that creates a durable oxide layer on the surface of aluminum and metal components. This layer increases corrosion protection and wear, supports paint adhesion, and can provide electrical insulation. In aerospace applications, where precision and safety are paramount, anodizing ensures components meet performance and compliance requirements.

Because different parts require different levels of protection and finishing, several anodizing options are available, including:

Sulfuric Acid Type II, Class I Sodium Dichromate Seal

This process produces a highly durable oxide layer on aluminum parts, enhancing resistance to corrosion. It is widely used for aerospace and defense components where long-term reliability in harsh operating conditions is required.

Sulfuric Acid Type II, Class I Nickel Acetate Seal

This technique combines strong corrosion resistance with a smooth, uniform finish. It is frequently specified for parts that require both resilience and a surface optimized for paint or coating adhesion.

AMS2471

Anodizing to AMS2471 specifications delivers consistent results under strict aerospace standards. This process enhances corrosion resistance and wear protection while ensuring compliance with exacting requirements.

MIL-PRF-8625

This military specification outlines anodizing processes that meet the strict performance requirements of military and aerospace applications. It provides surface durability and corrosion protection needed for components that must withstand extreme operational environments.

TY IIB Anodizing

TY IIB offers the benefits of Type II anodizing with a thinner coating. Designed as a replacement for Type 1C anodizing, it provides reliable protection while reducing thickness where required.

Class 2 Anodizing

Class 2 anodizing delivers the same durability as clear anodizing (Class 1) while adding a dyed finish. At National Aeronautics Processing, red and black options are available for aerospace components that require both reliable protection and visual distinction.

Benefits of Anodizing in Aerospace

Anodizing is a critical aerospace surface treatment that provides manufacturers with reliable corrosion protection and enhanced durability for aluminum and metal components. This process helps ensure parts meet strict specifications, maintain consistent performance, and control operating costs.

In addition to improving functionality and aesthetic appeal, anodizing services support downstream metal finishing processes such as paint or coating adhesion, making anodizing an essential solution for aerospace manufacturers. By combining protection, performance, and versatility, anodizing helps manufacturers deliver high-quality, long-lasting aerospace components with confidence.

Your Partner for Advanced Aerospace Anodizing Surface Treatment

At National Aeronautics Processing (NAP), we provide anodizing services designed specifically for the rigorous demands of aerospace. Every process meets strict industry standards including AMS 2471 and MIL-PRF-8625, and our certifications include NADCAP Chemical Processing with AC7108/8 for anodizing – ensuring consistent quality and compliance.

For durable corrosion protection and precision aerospace surface treatment, our experts are here to deliver. Contact us today to get started.