coatings
Increase the lifetime of your parts due an optimal coating. Also improve your process parameters.
Why coatings?
The coatings offer you a lot of advantages:
- higher productivity
- improving machine availability
- reduction in maintenance costs
- improved service life
- reduction of friction
- protection against abrasive, corrosive and adhesive wear
- improved product quality
- lower wear rate
- reduction of surface reactions
- increasing surface hardness
Product inquiry 
Technical data sheet
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The different coatings
HCN-coating
The HCN-coating is especially suitable at processing high corrosive plastic materials.
It’s a ductile coating and ensures an absolutely seal surface and therefore an optimal resistance against corrosion.
| hardness HV | operation- temparature |
friction | ductility | corrosion- resistance | abrasion- resistance | application | characteristics |
| 1.000 - 1.100 | up to 800 °C | 0,50 - 0,60 | excellent | excellent | good | plastics processing f. e.: PC, POM, PVC, PVDF |
absolutely seal top layer, optimal corrosion resistance  |
CVD-coating
The CVD-coating is especially suitable at processing high abrasive plastic materials.
It’s an extreme hard coating and ensures an optimal resistance against abrasion.
| hardness HV | operation- temparature | friction | ductility | corrosion- resistance | abrasion- resistance | application | characteristics |
| appr. 3.000 | up to 700°C | 0,70 - 0,75 | satisfactory | satisfactory | excellent | plastics processing f. e.: PE, PP, PMMA, PET+GF |
high abrasion resistance |
PVD-coating
The PVD-coating combines the HCN and CVD coating. This coating shows an especially high wear resistance against abrasion and corrosion.
It’s well suitable for processing plastic materials which have an abrasive and corrosive tendency.
F.e., an uncoated hardened part in 1.2344 shows a hardness of appr. 53 HRC (560 HV). With the additional CrN-multilayer coating it reaches a hardness up to 1.800 – 2.400 HV. A glasfibre, as a comparison, has a hardness of appr. 1.200 HV.
With an additional top layer, you can also reduce adhesion and surface reactions.
| TIN | CrN | CrN-multi-layer | CrN-modified | |
| hardness HV | 2.100 - 2.900 | 2.100 - 2.400 | 1.800 - 2.400 | 1.800 - 2.400 |
| operation- temparature | up to 600 °C | up to 700 °C | up to 700 °C | up to 700 °C |
| friction | 0,65 - 0,70 | 0,50 - 0,60 | 0,50 - 0,60 | 0,40 - 0,50 |
| ductility | good | excellent | excellent | excellent |
| corrosion- resistance | good | good | excellent | excellent |
| abrasion- resistance | excellent | excellent | excellent | excellent |
| application |
plastics processing |
plastics processing f. e.: PE, PP, PMMA, PET, PO |
plastics processing |
plastics processing f. e.: PC, PS, PMMA, PUR, PA, POM, PVC elastomers f. e.:EPDM, NBR, SBR, natural sap |
| characteristics | low cold shut, high toughness | low cold shut, high toughness | low cold shut, high toughness adjustable micro roughness |
low cold shut, high toughness, micro roughness, low friction |
https://www.ofs-filtersysteme.de/en/products/additional-services/coatings.html#sigProIdc270754f2e
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