Our Chemical Film Coating Services
Chemical film is a chromate conversion coating that can be applied to aluminum parts to enhance corrosion protection while maintaining conductivity. This process is also useful for improving adhesion for future paints and primers. We offer both clear and golden finishes, with the clear finish providing minimal electrical resistance, while the golden finish offers thicker corrosion protection and paint adhesion.
Our chemical film (alodine/irridite) services comply with MIL-C-5541 and MIL-DTL-5541 standards, and we offer two classes of coating. Class 1A is used as a corrosion-preventative film (unpainted) or to prove adhesion of paint finish systems, while Class 3 is used as a corrosion-preventative film for electrical and electronic applications where low-resistance contacts are required.
Chem film coatings can be applied to most alloys of aluminum, making it a versatile solution for your metal finishing needs. Additionally, our typical chemical film coating provides roughly 168 hours of salt spray per ASTM B 117.
Specifications:
- MIL-C-5541
- MIL-DTL-5541
Colors:
- Clear
- Yellow (Gold)
MIL-C-5541, MIL-DTL-5541
- Class 1A: is used as a corrosion preventative film (unpainted) or to prove adhesion of paint finish systems.
- Class 3: is used as a corrosion preventative film for electrical and electronic applications where low-resistance contacts are required.

MIL-SPEC Coatings
We provide metal finishing services for most MIL-SPEC coatings. All finished parts are inspected by our quality control center to make sure the highest standards are met.
Your Chemical Film Specialists
Request a quote from Del's Plating Works for your chem film coatings and experience high-quality, reliable, and professional services. Our chemical film process is great to use as a pre-treatment for paint!
our work
Questions?
Give us a call or send us a message and our team will contact you as soon as possible.
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- 8736 Schumacher Ln
Houston, TX 77063 - Toll-Free: (877) 311-0123
Phone: (713) 785-4955