Blackening Fluid as the name suggests is used in the process for Blackening of Steel. A

protective coating, for the material during, storage and handling.


Articles to be blackened should be dry before immersion. Articles remain immersed for about 10 – 30 minutes

 and removed, swilled and dried. Bath temperature should be maintained between 130 - 150° C.

Adding solution/ water should be done with the greatest care through a pipe, to avoid

spitting. The black color developed may be preserved with suitable oil.