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Hard coating - PLASTIT®


RUBIG PLASTIT® treatments make premium coatings a reality. By advancing a tried and tested heat treatment process, RUBIG has developed DLC Xtended®. Notable quality attributes include the internal coating and thick layers. If you are looking for premium treatments in hard coatings, choose PLASTIT® from RUBIG.

You are interested in our hard coating processes?

Contact us.

Protection for your component's surface

We offer PACVD coatings (PACVD - plasma assisted chemical vapour deposition) which have a chemical deposition and function in a plasma-assisted manner, as compared to the PVD procedures which are chara­cterised by a physical depos­ition. Tools and components must with­stand increasing stresses and strains in mechanical and tool engineering. Functional layers can almost fully meet these require­ments nowadays and with them the workpieces get an increas­ed edge strength and wear resistance.


Thin wear protection or hard layers can only meet the requirements placed on the materials nowadays if the overall compound is ideally adapted to the demands. The surface of highly stressed components and tools forms the contact surface to the rough environ­ment, like skin does in the human body. Wear, crack formation and corrosion always occur on the surface and ultimately damage the entire component or tool. Protect the surface of the component with our procedures to ensure a long lifetime.


At RUBIG, we are pleased to advise you in terms of steel selection, heat treatment, nitriding, surface quality and the correct hard layer. We offer you our DUPLEX processes both for all of our titanium based coatings and for our DLC Xtended coating. DUPLEX means that we perform plasma nit­riding and coating works during one process. By nitriding the surface, we achieve a supporting effect for the hard layer and an improvement of the layer adhesion.


Are you looking for coating systems? Please click here!

RUBIG customers may choose from the following treatments

Carbon-based coatings:


Titanium-based coatings:


Detailed descriptions of our procedures are presented in our technical data sheets that are available for download.

Benefits of PLASTIT® treatments for your components:

  • Optimum wear and corrosion resistance
  • Excellent gliding properties due to minimal friction
  • Longer service life of your components
  • Improvement of release properties
  • Reduction of mould contaminations and weld deposits
  • Can be used for complex geometries
  • Internal coatings for tubes and through holes
  • Protection of polished and structured tool surfaces

DLC Xtended®

The basis for the DLC Xtended® layer system is a a-C:H:Si hard layer better known as DLC (diamond like carbon). A-C:H:Si stands for an amorphous layer doped with silicon and hydrogen. A wide range of characteristics can be achieved with this layer in combination with the RUBIG PACVD technology.

This functional layer serves to in­crease the wear protection of components made of steel materials with optimum corrosion resistance!

Due to the unique combination of the procedures micro impulse plasma nitriding and hard coating it is possible to achieve a surface hardness of up to 1,500 according to Vickers with minimum friction coefficients.

This procedure, currently unique on the market, offers the possibility to treat large and complex components in one process. Due to this, it is possible to apply a plasma-assisted coating procedure even in heavy machine and vehicle construction.

A treatment with DLC Xtended® offers the best tribological ch­aracteristics, which means the wear of treated components is minimised. Due to the low friction coefficients, very good failsafe running functions are achieved even in an unlubricated condition. An excellent corrosion resistance allows for the usage of the treated components even under extremely adverse conditions. The surface has water and oil repellent chara­cteristics. Thanks to the surface quality, contaminations such as oils, lubricants, dust, abrasion (e.g. non-ferrous metal) and organic residues can easily be removed.

By means of specially developed process parameters it is possible to coat through boreholes with a diameter with a length ratio of 1:15 (a minimum diameter exceeding 15 mm is required). For this development, RUBIG was awarded the "Prix de l'Innovation" prize by A3TS in France in 2014.


DLC – diamond-like carbon

Diamond-like carbon layers are be­coming more and more important due to their unique and excellent wear, friction and corrosion-reducing characteristics.

Due to the low friction value, there are many applications for tribo­logical components such as piston pins, cam followers, bearings and pistons which might be subject to a lubrication loss, in plastic injec­tion moulding engineering or for ejec­tors, slides and parts which are not lubricated for production reasons.


Advantages of DL coat PLASTIT® coating:

  • Very low friction coefficient
  • Very good anti-adhesive characteristics
  • High elasticity
  • High corrosion resistance
  • Case-hardening temperature up to 450°C
  • Good biocompatibility
  • Appealing optical characteristics


The low coating temperature of under 200°C allows for coating of low temperature tempered steels and aluminium.

Our DL coat PLASTIT® layer is used in automotive engineering, motor production, for pumps, sealings, valves, in the textile industry and for many other precision components which require a good wear pro­tection, minimal friction values and a high surface quality.


The universal titanium based hard layer is a long proven standard layer due to its balanced characteristics.


The golden titanium nitride layer (TiN) has the following charact­eristics:

  • High hardness and adherence
  • Good chemical resistance
  • Good outdoor temperature resistance
  • Relatively low thermal conductivity
  • Biocompatible and food safe
  • Attractive golden colour  


Particular characteristics are the high toughness and the very low tendency to cold shuts as well as the limitation of corrosion. Due to the golden colour, this coating is par­ticularly suited for parts whose commencing layer wear should be visually recognisable.

Carbon LF PLASTIT® (TiCN) procedure

With our TiCN based multi-layer coating system, considerably higher lifetimes can be achieved within the scope of forming by reducing wear caused by friction and abrasion. Through the coating of forming tools, you achieve a better forming behaviour in connection with a hi­gher surface quality of your produced parts.  


Our titanium carbon nitride layer (TiCN) is even harder than the TiN coating and we recommend it for all tools which are exposed to a high wear stress.

Boron Nanocomp PLASTIT® (TiBN) procedure

During the casting of aluminium alloys in permanent moulds, the moulding equipment used is ex­pos­ed to erosion, corrosion, ad­herence and thermal fatigue. This results both in a decreased surface quality of the tools and the produced castings.

Regarding very high tool costs, the lifetime achieved is of particular importance. Besides the correct tool selection, heat treatment and a possible nitride treatment, the tool surface can nowadays be protected against the above-mentioned stress types by applying a hard layer to it.


Our BORON Nanocomp PLASTIT® layer, a multi-layer coating with varying BOR contents provides the following advantages for tools, cores and ejection systems:

  • Increased wear resistance
  • Reduction of corrosion with aluminium melt
  • Protection against aluminium adhesions and weld deposits
  • Improvement of slip characteristics
  • Mould release agent reduction

Technical Data:

  • Maximum dimensions: Ø 1.000 mm x 1.800 mm depth

More informations on request:[at]rubig[dot]com