A simple and cost-effective method of blackening steel.

Metal blackening is a process in which the surface layer of a metal material is transformed into black. This is achieved through a chemical reaction between the metal and a solution containing metal ions. This process is often used to protect metal surfaces from corrosion and enhance their aesthetic appearance. During blackening, the metal material is first cleaned and then immersed in a solution containing metal ions, which is subsequently heated to a specific temperature.

We blacken parts according to the maximum size of the tank - 400×300×180 mm, and the maximum weight of parts - 20 kg.

Máte zájem o tuto službu?

Máte zájem o tuto službu?


Fast delivery




Manufacturing in Czech Republic
with years of experience


Implementation according
to your requirements

We also offer

In addition to custom metal manufacturing, JC-Metal is also engaged in the production and repair of cutting tools (repairs of shears, slitters, guiding plates, etc.). Based on provided documentation, we can manufacture new structures or repair existing parts through welding and subsequent reworking.

Regarding our available production capacity of our machine park, we are able to offer you:

  • Milling
  • Electrical discharge machining (wire cutting)
  • Turning
  • Flat / cylindrical grinding
  • Welding
  • Laser and water jet cutting

Surface treatments:

  • Anodizing, zinc plating, blackening, nickel plating, painting, etc.
  • Nitrocarburizing, hardening, nitriding, sandblasting, polishing, etc.

Get inspired