Aerospace Defense Coatings of Georgia

Black Oxide Plating

Black Oxide Plating

This procedure creates a black finish on the ferrous metal base material by immersing it in hot oxidizing salts or salt solutions.

  • Black Finish
  • Protective Coating
  • Maintains original component dimensions without build up
  • Finished coating will retain an oil film

Black Oxide Plating Capabilities

Type of Plating
Black Oxide Plating
Provides a protective coating while maintaining the existing dimensions of the part or component. Finished coating will retain an oil film. Also adds black color to component.
Process Approvals
For Black Oxide Plating we adhere to:
  • MIL-DTL-13924: Coating, Oxide, Black, For Ferrous Metals
MIL-DTL-13924MIL-DTL-13924 (PDF - 50KB)
A black finish on the base material is produced by immersing it in oxidizing salt or salt solutions.
Base Materials Worked
These specifications focus on black oxide plating of all ferrous metals (Iron and Steel).
Plating Class
The Black Oxide Plating should be of the following classes:
  • Class 1 = Alkaline oxidizing process (for wrought iron, cast and malleable irons, plain carbon, and low alloy steels).
  • Class 2 = Alkaline chromate oxidizing process (for use on certain corrosion resistant steel alloys which are tempered at less than 900°F (482°C)).
  • Class 3 = Fused salt oxidizing process (for corrosion resistant steel alloys which are tempered at 900°F (482°C) or higher).
  • Class 4 = Alkaline oxidizing process (for other corrosion resistant steel alloys).
All black oxide plating processes are performed manually to ensure the proper care is given to each step.
Additional Operations
We offer several additional operations that may be required for your product: Cleaning, Magnetic Particle Inspection (NDT), Penetrant Inspection (NDT), Hardness & Conductivity Testing (NDT), Dry Film/Solid Film Lubricants and Primer & Topcoat Painting.
Please let us know if you require any of these additional services.
Quality Control
All plating processes are subject to our rigorous Quality Assurance process. All work is reviewed and inspected to be in compliance with the specification (Process Approval requested).
Industries Served
We are committed to providing the aerospace and defense industries with the highest quality metal finishing, testing, and painting available.
Environmental Responsibility
As a corporate citizen, we are committed to responsibly protecting our environment. We have a state-of-the-art $2 Million Waste Prevention System in place. All hazardous waste materials are 100% recycled and rendered harmless.

We know that this is important to you, and so we maintain an open door policy concerning environmental inspections of our facility.
With over 50 years in the metal finishing industry, we have the expertise you can depend on.
Minimum Order
We can provide black oxide plating for prototype to high volume runs.
Drawing Submissions
We accept both e-mailed (DWG, DXF, PDF, all image files) and faxed drawings.
Special Instructions
Please Attach Drawing to Request Information Form.