Ultra-3 Cold burnishing - Set

Item number: 1112


Dip burnishing for the simple burnishing of steel.

Pre-treat the item with the conditioner supplied and then dip it into the solution.

Then rinse and dry the object (e.g. with kitchen roll).

The last thing you need to do is to oiling it and you will have a nice result.



Category: Burnishing and blackening


starting from 49,99 €

including 16% VAT. , plus shipping (Paket)

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There are variations of this item. Please select the variation you wish.


Ultra-3 cold blackening - for evenly blackened steel

With Ultra-3 cold burnishing you protect steel workpieces from corrosion. A particular advantage of this immersion burnishing is its use as a room-warm immersion bath. This considerably reduces the effort required compared to hot blacking. For cold blacking you do not need special ventilation devices or other special equipment. In addition, the safety risk is reduced by working with the room-warm solution. With Ultra-3 cold burnishing, an even and stable protective layer is formed on the workpiece, which reliably protects it from damaging environmental influences. The Ultra-3 Cold burnishing is available as a burnishing set with the conditioner required for pre-treatment. This has several advantages for low-alloy steels (especially for chrome-containing steel).


Ultra-3 cold burnishing ideal for objects with high dimensional accuracy

In many corrosion protection measures, material is applied to the workpiece surface. This is a problem especially for objects with high dimensional accuracy, as the dimensions change as a result. This is not the case with blackening. This is because the contact of the material surface with the cold blackening causes a chemical reaction. Oxygen is deposited in the metal surface, which changes its properties in terms of susceptibility to corrosion. The protective layer, which is a maximum of two micrometers thick and is formed by the intercalation of oxygen atoms, does not affect the dimensional accuracy of the workpiece in any way.

This is how dip burnishing works with the Ultra-3 cold burnishing

When blackening, make sure that the solution is at room temperature and therefore do not use it outdoors at cool temperatures.

In the first step, the cleaned and reliably degreased workpiece is immersed in the conditioner for 3-10 minutes to prepare low-alloy steels for burnishing. Afterwards, immerse the object in the room-warm blackening agent. Within a few minutes a continuous black surface will form.

Now remove the burnished object from the solution, rinse it thoroughly with clear water and dry it. Please note that you will only achieve reliable corrosion protection if you treat the workpiece with an appropriate oil after blackening. Only the combination of dip burnishing and oil or grease will lead to the desired result.

For which materials is Ultra-3 cold burnishing suitable?

With Ultra-3 cold burnishing you can treat iron as well as unalloyed and low-alloy steels. To prepare alloyed steels optimally for burnishing, use the enclosed conditioner. Even zinc can be treated with Ultra-3 without any problems.

For a high quality event you should only burnish steels with a maximum chrome content of 5%. For higher alloyed steels we recommend our Ultra-5 quick burnishing or our Ultra-7 brush burnishing. With stainless steel (high-grade steel), burnishing does not work because the oxidation necessary for successful burnishing does not take place.

Advantages of Ultra-3 cold burnishing

Blackening with the Ultra-3 blacking system offers numerous advantages.
-immersion blackening at room temperature of the solution - heating is not necessary
-applicable at all locations with appropriate temperature
-No dimensional change of the workpiece
-Good corrosion protection in combination with appropriate greases
-Improved adhesion of lubricants
-Definitely improved emergency running properties of plain bearings

When burnishing, it is essential that you follow the instructions for precise application and the necessary safety measures.


Marking of the mixture:

Ultra-3 cold burnishing
(contains copper nitrate, selenium dioxide, potassium hydrogen difluoride, nitric acid)


Signal word: Attention

H phrases:
May be corrosive to metals.
Causes skin irritation.
Causes severe eye irritation.
Harmful to aquatic organisms, with long-term effects.

Wear protective gloves/protective clothing/eye protection/face protection.
IN CONTACT WITH SKIN: Wash with plenty of water.
IN CONTACT WITH EYES: Rinse gently with water for a few minutes. Contact lenses if possible
remove. Continue rinsing.
Feed in contents/container special waste.


(contains sulphuric acid, potassium hydrogen difluoride)


Signal word: Danger

H phrases:
May be corrosive to metals.
Causes severe skin burns and severe eye damage.

Do not breathe dust/fume/gas/mist/vapour/aerosol.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN CONTACT WITH SKIN (or hair): Remove all contaminated clothing immediately. Wipe skin with water

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5 from 5 Top

works really fine :)

., 15.07.2020
Total entries: 1
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