Caswell Mega Black

Black metal yourself with Caswell Mega Black Oxide

The original Caswell Mega Black from Caswell Plating USA for chemical blackening of iron and steel gives an even darker finish than the traditional Caswell Black Oxide. Original product: Caswell Mega Black.

Available in:

• 200 ml makes 2 liters
• 400 ml makes 4 liters
• 800 ml makes 8 liters

Caswell Mega Black Features

Gives a professional, very dark finish with no noticeable size change, ideal for precision parts. Suitable for larger panels and furniture and delivers a consistent conversion coating in appearance similar to hot black oxide. By adjusting the mixing ratio, the final colour can be controlled.

Distilled water not included. Demineralized or tap water can also be used, read more about different types of water. The prepared liquid can be stored in a sealed container for reuse.

Which Caswell Black Oxide Liquid Do I Need

Caswell offers two options for cold black oxidation of steel and iron, Caswell Black Oxide and Caswell Mega Black. Both are suitable for room temperature processes, Mega Black usually gives a darker final tone.

• For blackening stainless steel use Caswell Black Stainless Steel.

Protecting the Caswell Black Oxide layer

Black oxide in itself has limited anti-corrosion. Protect the layer with a water-repellent sealer such as Caswell Penetrating Sealer or Caswell Sealer. Alternatives are beeswax, linseed oil or a clear coat, depending on the application and desired appearance.

Metal Blackening with Caswell Plating Products

Caswell black oxide processes work quickly at room temperature and are easy to apply, with results in seconds to minutes. Watch the video for an example of the process with the sealer.