Ultra Blak 400

Black Oxide Finish for Steel

Ultra-Blak 400 is an alkaline salt and oxidizing agent mixture containing penetrants, catalysts, activators, rectifiers and wetters which, when dissolved in water and heated, will produce a black oxide (Fe3O4 - magnetite) finish on steel. 

Benefits of the Ultra-Blak 400 process:

• Ultra-Blak 400 is a premium grade black oxide formulation that actually costs less to apply.
• There is no rub-off as is common with other black oxide processes.
• Faster blackening reaction for reduced immersion time.
• Blacker finish and greater depth of blackness.
• 20% to 30% less salt consumption than with other black oxide processes.
• User friendly with a wide window of operation.
• Blackens a wider range of steel alloys in the same bath with less rejects than competitive baths.
• Frequently operated at a temperature as low as 272°F.
• Only uses 5.75 pounds of Ultra Blak salts are used per gallon of water versus
  the 7-8 pounds used in other black oxide processes.
• Its unique wetting agent produces a more uniform black finish and a quicker reaction. The reduced viscosity ensures complete coverage of all surfaces.
• Complies with and exceeds the requirements of military specification MIL-DTL-13924D Class 1 and AMS-2485H. It meets and exceeds the oxalic acid test and salt spray requirements.
• No dimensional change (paint builds up)
• Reduces handing of parts- many parts can be done in a rotating barrel
• No primer or precoat phosphate required
• No bake oven – no volatile organic fumes
• Less equipment and less maintenance of equipment
• Higher productivity – less setup and less processing time