Black Ox

Functional/aesthetic treatment for a corrosion-resistant surface

Color: black
Applications: silicon-rich aluminum castings
Properties: anti-oxidant

Black Ox is a black anodizing specifically dedicated to aluminum parts obtained by casting with an high percentage of silicon


Through Black Ox anodizing it is possible to anodize not only conventional billet (CNC, wrought) aluminum components but also cast aluminum elements (cast aluminum, melted aluminium, zamak) and characterized by high percentages of silicon (even more than 10%) usually considered not anodizable.


Almost all of the cast aluminum components (and also some billet elements), when subjected to traditional anodizing, may present important unsightly defects such as scrubs, stains, dots, etc. With Black Ox anodic oxidation treatment it will be possible to definitively solve this problem giving, also to the cast pieces, a deep and homogeneous black color.

With Black Ox anodizing not only a deep and homogenous black color but also incredible anti-oxidant and hardening properties will be reached

Black anodizing cast aluminium


Black Ox anodizing considerably increases the corrosion resistance of cast aluminum components: in salt spray, depending on the type of alloy and the thickness of the treatment, it can exceed 1000 hours.


The surface hardness measured after black anodizing treatment of cast aluminium or zamak components increases if compared to the values of a traditional anodizing on aluminum: up to 300Hv can be obtained.

Final oiling treatment based on PTFE®: to further emphasize the properties of Black Ox anodizing

Different thickness

The thickness to which Black Ox black anodizing specific for castings can be applied is from 5 microns to a maximum of 20 microns depending on the type of need. For components that need to be painted are enough 5 microns. For highly stressed elements 20 microns can be reached.

PTFE® oiling

The anodizing galvanic step is associated with a final impregnation based on micronized and polarized PTFE® which further increases corrosion resistance thanks to saturation of the cast aluminum pores and gives the components a glossy black effect.

The components treated with Black Ox black anodizing are paintable; the treatment is an excellent primer for the adhesion of polymers

Aluminium painting

Ideal for an adherent painting

The difficulties in aluminum painting are well known: the metal conformation itself and its characteristics make it a difficult material to paint with good results. Through Black Ox anodizing, specific for cast aluminum, it will be possible to create an excellent base that will effectively act as a primer for a perfect adhesion of the further paint.

Ideal for a durable painting

Aluminum, in addition to being difficult to paint for the adhesion of the paint itself, as a material suitable to rapid oxidation, often creates problems of paint resistance over time. It can in fact create points of oxidation that will cause the detachment of the painting layer from the aluminum. Black Ox anodizing, specific for castings, thanks to its anti-oxidant properties prevents the formation of oxide under the paint layer ensuring a perfect sealing of the painting over time.

Suggested applications

Cast aluminium engine cylinder heads
Cast aluminium covers and carters
Cast aluminium carburetors
Cast aluminium throttle bodies
Cast aluminium brackets
Cast aluminium frames
Cast aluminium parts of firearms

Questions to which the treatment answers

→ What is an ideal anodizing for cast aluminum components?
→ How to anodize cast aluminum parts?
→ How to anodize zamak parts?
→ What is an ideal anodizing for silicon-rich aluminum components?
→ How to paint aluminum?
→ Which is the best primer for aluminum painting

Black anodizing cast aluminium

Black anodizing cast aluminium

Aluminium painting

The synergy between the treatments offered by Precise Technology allows the offer of a service unique in its kind: the possibility of submit the components to two or more treatments in order to follow all the process from beginning to the end and obtain an unsurpassed finished product.

The elements intended for Black Ox anodizing can be previously:
— Solvent or ultrasonic cleaned
— Re-pickled from previous treatments
— Micro shot peened
— Polished or treated with Super Fin

The Black Ox anodized elements can receive other treatments such as:
— Impregnation with MicPol® oil
— Graphite or other molybdenum disulphide coating
— Powder painting

Black anodizing cast aluminium

Pick-up and delivery

The headquarter of Precise Technology SA is strategically located in Chiasso so that it can easily serve, through an organized logistics network, the whole Swiss territory, the whole Italian territory and, more generally, all Europe. Thanks to the pick-up and delivery service, the company can apply Black Ox treatment (black anodizing specific for cast aluminum) to corporate and private customers located in Italy, Switzerland and all Europe.

Ritiro e riconsegna in tutta Europa Servizi per aziende e clienti privati
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