Avudai Surface Treatments Private Limited

Avudai Surface Treatments Private Limited

Avudai Surface Treatments Private Limited

Chettipedu, Chennai, Tamil Nadu


Blackening Chemical

Prominent & Leading Manufacturer from Chennai, we offer blackening chemicals.

Blackening Chemicals


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Approx. Rs 85 / kgGet Latest Price

Product Details:

Packaging SizeStandard
Packaging TypeStandard
Grade StandardTechnical Grade
Physical StatePowder
Chemical Strength130 - 140 points
Temperature135 Celsius to 140 Celsius.
Dipping Time10-15 min






Blackening process converts clean iron and steel surface to uniform glossy black film of Iron oxide, when oiled coating exhibits good corrosion resistance.


  • Blackening coating does not affect dimension.
  • A good uniform coating can be obtained over threads, blind holes etc., and its suitable for small machined components.


Bath Make Up:
  • Partially fill the tank with water and add 65 kegs of EVERBLACK-FCB for every 100 liters of bath.
  • Fill the bath up to its operating level with water and stir the solution thoroughly.

Bath Control:

EVERBLACK-FCB concentration can be determined more accurately by titration method.

  • Take 1 ml of EVERBLACK-FCB bath solution into a conical flask.
  • Add 5 to 6 drops of phenolphthalein indicator solution.
  • Titration against N/10 Sulphuric acid standard solution.

Bath Mintanance:

  • It is important to maintain the above temperature which represents the boiling range of the initial bath made as recommended.
  • If the bath becomes concentrated the boiling temperature will be elevated above 150 degree Celsius. This will lead to brown stains on the work.
  • If the bath becomes weak, the boiling point will be lowered below 140 degree Celsius this is lead to transparent color.
  • The bath level should be carefully maintained while the bath is boiling by water drip feed arrangement.

  • Add 460 gms of EVERBLACK-FCB per 100 liters of bath for each point below 130.


Additional Information:

Pay Mode Terms: T/T (Bank Transfer)

Port of Dispatch: chennai

Production Capacity: 500 tons per day

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