Black Oxide Solution "Ultra-3" – uniform black finish for steel
The Ultra-3 black-oxide solution provides reliable corrosion protection for steel workpieces. A major advantage is its room-temperature application, which greatly reduces effort compared with hot blackening. You need no special equipment or forced ventilation, and working with a lukewarm solution also lowers safety risks.
During treatment a black layer forms on the workpiece that, together with oils, shields it from harmful environmental influences. Ultra-3 is especially effective on low-alloy steels, including chrome-containing grades. In addition, the concentrate can be diluted up to 1 : 4 with water for construction steel without impairing the blackening quality.
Ideal for dimension-critical parts
Many corrosion-protection methods add an extra coating that can cause problems on tight-tolerance workpieces. Blackening does not.
The chemical reaction between the metal surface and Ultra-3 produces a layer only two micrometres thick. This protects the part from corrosion without affecting dimensional accuracy.
How to use Ultra-3
Ensure the solution is at room temperature for best results. Avoid outdoor use at low temperatures.
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Preparation: Immerse the cleaned and degreased workpiece in the conditioner for 2–10 minutes.
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Blackening: Dilute Ultra-3 up to 1 : 4 with water for construction steel, then immerse the part. Within minutes a uniform black surface appears.
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Post-treatment: Remove, rinse thoroughly with clean water and dry. For optimum corrosion protection, treat the part with a suitable oil. The oil/black-oxide combination provides long-lasting protection.
Suitable materials
Ultra-3 is ideal for iron as well as unalloyed and low-alloy steels. Use the supplied conditioner to prepare alloyed steels.
For best results we recommend blackening steels with up to 3 % chromium. For higher-alloy steels use our rapid blackening “Ultra-5” or brush blackening “Ultra-7”. Conventional blackening does not work on stainless steel because the required oxidation does not occur.
Advantages of Ultra-3
- Room-temperature application – no heating required
- Dilutable up to 1 : 4 with water on construction steel
- Flexible use anywhere with suitable temperature
- No dimensional change to the workpiece
- Excellent corrosion protection with suitable greases and oils
- Improved lubricant adhesion
- Optimised emergency-running properties of plain bearings
Scope of delivery:
- Black Oxide Solution "Ultra-3"
- Conditioner
Marking of the mixture:
Ultra-3 Dip Black Oxide
(contains sodium chlorate, selenium dioxide, nitric Acid, sodium hydroxide)
Signal word: Danger
H290 May be corrosive to metals.
H302+H332 Harmful if swallowed or if inhaled.
H314 Causes severe skin burns and eye damage.
H411 Toxic to aquatic life with long lasting effects.
P101 If medical advice is needed, have product container or label at hand.
P102 Keep out of reach of children.
P260 Do not breathe mist/vapours/spray.
P280 Wear protective gloves/protective clothing and eye protection/face protection.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310 Immediately call a POISON CENTER/doctor.
P501 Dispose of contents/container to an appropriate recycling or disposal facility.
Conditioner
(contains sulphuric acid, hydrochloric acid, potassium hydrogen difluoride)
Signal word: Danger
H290 May be corrosive to metals.
H314 Causes severe skin burns and eye damage.
P101 If medical advice is needed, have product container or label at hand.
P102 Keep out of reach of children.
P260 Do not breathe dust/vapours/spray.
P280 Wear protective gloves/protective clothing and eye protection/face protection.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310 Immediately call a POISON CENTER/doctor.
P501 Dispose of contents/container to an appropriate recycling or disposal facility.
