Finishing Services

Black Oxide

At a glance

Applicable Materials

Steel, Stainless Steel

Colors

Black

Texture

Smooth, matte black

Can be applied with

Media blasting, tumbling, passivation

About the Process

Black oxide is a conversion coating (similar to Alodine) that is used for steel and stainless steel. It is used mainly for appearance and for mild corrosion resistance. Black oxide impregnated with oil can provide the highest amount of corrosion resistance. Black oxide is formed in a process similar to anodizing, where the parts are dipped into various hot baths of chemicals that convert the surface of the material into magnetite, which creates the black color. Black oxide does not have a significant dimensional impact, therefore masking parts is not necessary. This process can take a longer time due to the manual labor required and the time it takes for the baths to come to the correct temperature.

YOU MIGHT ALSO BE INTERESTED IN

CNC Machining Copper Alloy EDM Electrodes

Electrical Discharge Machining (EDM) is an amazing technology that can manufacture complex shapes in a variety of conductive materials — and it produces tightly toleranced parts with excellent finishes. EDM is a subtractive electro-thermal manufacturing method that utilizes electricity to erode the surface of a part.  Basics of Electrical Discharge Machining In general, EDM can […]

Learn More

Solving 7 Common Problems in CNC Machining Aerospace Components

CNC Machining for Aerospace: An Overview The aerospace industry is different from others because the consequences of a given part’s failure are dire. No need to go into details, but in general, everything needs to work perfectly every time. This means every gear needs to turn, every bracket needs to stay in place, and it […]

Learn More