ULTRA BLACK OXIDE 500 mL

Details

ULTRA BLACK OXIDE can now ship with our regular courier with no Dangerous Goods fees !

ULTRA BLACK OXIDE is recommended for blackening cold and hot rolled carbon steels, alloy steels, tool steels, as well as cast iron, forged steels and powdered metal.

It will even blacken A2 Tool Steel without using a prep (although it may have a small amount of smut). It will not blacken stainless steels. 

ULTRA BLACK OXIDE works well for properly cleaned steel sheets and parts for interior architectural steel finishes.

ULTRA BLACK OXIDE is Perfect For:

• Tools/fasteners, firearms, architectural surfaces, and furniture
• Steel sheets and architectural surfaces
• A2 Tool Steel​

1 litre of ULTRA BLACK OXIDE will cover approximately 10 square meters

ULTRA BLACK OXIDE represents a major breakthrough in the room temperature blackening of iron and steel.

For years, BLACK OXIDE has been the standard in room temperature blackening.

Now, ULTRA BLACK OXIDE produces an even darker black finish.  

In fact, it produces a black finish equal in depth of blackness and in corrosion resistance to that obtained with the conventional hot black oxide processes. 

Immersion Process ULTRA BLACK OXIDE Solution Makeup and Use

Prior to charging a production tank, some experimentation should be performed with properly prepared rust-free sample parts, using various dilutions of the ULTRA BLACK OXIDE concentrate and different immersion times to determine the conditions and parameters required to produce the desired depth of black.

As a starting point, dilute one (1) part ULTRA BLACK OXIDE concentrate with nine (9) parts water for a 10% by volume solution.

Determine by test, the shortest immersion time necessary to produce the desired black, usually two to three minutes, up to a maximum of 5 minutes, depending upon the alloy and surface hardness.

Immersing parts for an excessive amount of time will not increase the depth of blackness and may result in the formation of an undesirable smut or rub-off. If a smut develops with an immersion of less than 5 minutes, prepare and evaluate a solution of one (1) part concentrate and six (6) parts water. If the required immersion time exceeds five (5) minutes, the dilution should be increased to twelve (12) parts water and the immersion time re-evaluated. If satisfactory results cannot be obtained with the various dilutions and light gray or iridescent finishes result, then the steel surface will require activation and conditioning.

NOTE: Mill scale or heat treat scale must be removed prior to blackening in order to achieve the best and most uniform finishing results.

1. Clean and degrease

2. Cold water rinse

3. Derusting with 30-50% Hydrochloric Acid

4. Cold water rinse

5. Blacken with ULTRA BLACK OXIDE

6. Cold water rinse

7. Seal with Caswell Pseal E-Tec water displacing corrosion inhibitor. 

Swab on/Hand Make up and Use: 

Although, for swab on applications ULTRA BLACK OXIDE can be applied at full strength, it is generally helpful to make up a 10-33% by volume solution.

Use a solution of one part ULTRA BLACK OXIDE to 9 parts water for a slower reaction or a solution of one part ULTRA BLACK OXIDE to 2 parts water for a faster reaction.

Testing should be on scrap pieces of the same steel alloy and finish of steel to develop optimized blackening.  

1. Degrease the area to be refinished with alcohol, chlorinated solvents, vapor degreasing, a liquid detergent. Do not use petroleum solvents. 

2. Rinse with running water, a damp sponge or damp cloth.If water breaks occur during rinsing, try degreasing again. Water breaks mean the substrate is not clean.

3. Remove any rust.

4. Apply the full strength or the diluted solution of ULTRA BLACK OXIDE generously with a cotton swab, sponge or brush using a light rubbing action. Use care to ensure a smooth and even coverage. Continue light rubbing action for 1 to 3 minutes. It also helps to keep adding some of the full strength or previously diluted ULTRA BLACK OXIDE solution if the reaction has stopped. The depth of blackness is controlled by the length of time the solution is left in contact with the metal surface. Note: Excellent results can be obtained by using a Scotch Brite pad when applying ULTRA BLACK OXIDE.

5. Rinse with running water, a damp cloth or damp sponge several times to remove residual blackening solution. Adding a small amount of baking soda to the rinse water will help insure the complete removal and neutralization of the residual acidic ULTRA BLACK OXIDE solution. If the residual solution is not completely removed, it may cause rusting of the surface as it dries.

6. Wipe dry or force dry with a heat gun. Do not use compressed air to dry.

7. Rub area with a soft cloth or brush to remove the non-adherent layer of spent chemicals from the surface.

8. Repeat steps 4, 5, and 6 if a darker finish is desired.

9. To enhance the depth of blackness and impart corrosion resistance the finish must be sealed with Caswell Pseal or Caswell Cseal.

See below for current SDS