Black oxide | Surface Finishes for Metal and Plastic Parts

Black oxide

Description

Black oxide is a conversion coating used to improve corrosion resistance and minimize light reflection.

Technical properties


Sharp edges and burrs	Removed
Premium appearance availability	Yes
Tolerances	Met after surface finish

Colors

Applicable Materials

Alloy steel

Mild steel

Spring steel

Stainless steel

Tool steel

Example of an Black oxide part

Design considerations for Black oxide

Black oxide provides some level of corrosion resistance, but it is not as effective as other coatings like zinc or chrome. It may not be suitable for applications where the parts are exposed to harsh environments.
Black oxide is not as hard as other coatings and may wear off over time. It may not be suitable for parts that are subjected to high levels of wear and tear.
Black oxide does not adhere well to some types of metals, such as aluminum. It may require additional surface preparation to ensure good adhesion.

The Justway Black oxide process

Black oxide is a cost-effective alternative to other surface treatments like plating, and it can be applied to a wide range of metals, including steel, stainless steel, copper, and brass. Let’s break down the basic steps for Black oxide a part:

Clean the part to be processed
The part is then prepared for the black oxide process by either dipping it in a hot alkaline solution or by blasting it with abrasive media
The part is then immersed in a black oxide solution
Rinse thoroughly in water to remove any excess solution
The part is then dried using a hot air blower or oven
Check the part for any defects or flaws

CNC Machining

Sheet Metal Fabrication

3D Printing

Injection Molding

Vacuum Casting