Dianoir® G4 is skin friendly
Many fashion accessories (earrings, rings, bracelets, etc.) are made with materials containing nickel.
The standard legislation EN 1811: 2011 + A1: 2015 (see below) has set nickel release limits for objects in contact with the skin.
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Objects inserted in perforated parts of the human body |
Objects intended to come into direct and prolonged contact with the skin |
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(µg/cm2/wk) |
Under 0.11 |
From 0.11 to 0.35 |
Above 0.35 |
Under 0.28 |
From 0.28 to 0.88 |
Above 0.88 |
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Criteria |
OK |
Not OK |
OK |
Not OK |
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Argor-Aljba has developed the Dianoir® G4 DLC coating which, in addition to embellishing the objects coated with its deep black, is able to reduce the release of nickel ions by 80%, helping to make the objects themselves hypoallergenic.
With dianoir® G4 the world of luxury and fashion comes into a new aesthetic and technical dimension.
Discover it with us!
DLC (Diamond Like Carbon) is a wide coating family, composed by different type of coating structure and related processes, able to increase:
hardness (up to 7000HV)
scratch resistance
abrasion resistance
corrosion resistance
reducing the friction
blackening of the surface
looking for NEW BLACK?
Black is always trending, let’s enhance our intense black coating: DLC dianoir® G4.
Black is not just a colour, it represents elegance and beauty which is particularly requested for watches, jewelry, high-end accessories of fashion industry.
Consequently, the dianoir® G4 DLC
As result, the DLC dianoir® G4 is particularly suitable for watchmaking components and metal accessories. It guarantees:
• excellent adhesion stainless steel and titanium alloys
• extremely compact coating layer and homogeneous black colour
• decorative and functional coating with remarkable resistance against abrasion and scratches
In addition to the above-mentioned features, this coating has optimal properties thanks to non-toxic process and biological compatibility in contact with human skin.
Environmental friendly
• the dianoir® G4 coating process is environmental friendly
• it uses zero-esavalent chromium and does not produce harmful waste
• the dianoir® G4 coating process does not waste heavy metals in wastewater and processing, with a marked improvement also on the health of workers and the environment
• A fantastic advantage that translates into a valid and economical green production
We work together with our customers to develop coatings for even the most challenging requirements.
Argor-Aljba has increased the range of ta-C DLC coatings by introducing the "Argor Tool" family, specially developed to offer its customers an advantageous price/performance ratio. The coatings belonging to the Argor-Tool family, called dialong®-R, dialong®-G, dialong®-T, are deposited with the arc PVD technology patented by Argor-Aljba and are mainly dedicated to the sector of tools for processing non-ferrous materials.
Contact us for more information
We push the performance of ceramic tools higher
1. Extreme scratch resistance
Nobody wants scratches on their watch. Protects both the glass and on the case. Stainless steel and titanium can be prone to scratches when exposed to other harder metals. The harder the material used for the case, the more scratch-resistant the watch will be. For this reason, watch components coated with Dianoir® are extremely hard and therefore more resistant to scratches than other PVD coatings.
2. High resistance to abrasion and wear
Watch cases coated with Dianoir® have a longer service life. Thanks to the hardness of the DLC coating, accidental intrusion of hard particles or damage is almost impossible. The dial and movement components (which can also be coated with Dianoir®) are also protected by the robustness of the DLC.
3. Comfortable fit
The smooth surface of the Dianoir® coating ensures a comfortable feel on the wrist. The smoothness of the casing is also felt on the skin and is enhanced by the Dianoir® coating.
4. Excellent biocompatibility
In addition to its good mechanical properties, Dianoir® is 100% biocompatible. Dianoir® coatings do not contain any allergenic metals and also serve as protection against nickel content.
5. Exceptional heat resistance
Cover coatings Dianoir®, Dianoir®G2, Dianoir®G3 and Dianoir®G4 optimise the high temperature resistance (up to 500°C) of stainless steel and titanium cases.
6. Unique aesthetics
In addition to its exceptional protective qualities, each watch with Dianoir® coatings is distinguished by its particularly elegant and classy appearance. For a deep black finish, choose Dianoir®G2 suitable for every occasion and every style of dress. The perfect combination of sophisticated technology and aesthetics.
Argor-Aljba, already equipped with arc PVD deposition technologies, filtered arc PVD (patented), PVD sputtering and PACVD, has recently introduced a new coating technology that integrates PACVD with HiPIMS.
This integration, developed in collaboration with Hauzer technicians on Argor-Aljba specifications, allows us to expand the proposal range of coatings, to increase flexibility in production and to offer customers a product with higher wear resistance. Contact us for more information.