The Atlantis coating of the screw anchor is an organic coating composed of 3 layers:
- A first layer of zinc coating, applied directly on the base material with a minimum thickness of 5 μm.
- A second chemical conversion coating (passivating) around 1 μm thick.
- A third layer of epoxy resin, applied as 2 sequential successive layers, with post curing, around 7 μm thickness each one.
In this way the overall total coating thickness is thicker than 20 μm.
![faq atlantis1 en](https://www.indexfix.com/wp-content/uploads/2024/04/faq-atlantis1-en.webp)
Epoxy layers are applied by means of low speed spin immersion in the product, plus a post curing during 30-35 minutes at 180-200 ºC.
![](https://www.indexfix.com/wp-content/uploads/2023/12/faq-atlantis2-1024x384.webp)
Atlantis coating advantages:
- Resistance to scratches
- Resistance to acids and alkalis
- Reduced contact galvanic pair
- No affected by hydrogen embrittlement
- Due to the low process temperature, there is no change of hardness neither metallographic properties.
- Chrome VI free
- Reach and RoSH compliant
- Different colours available (silver, blue, yellow, green, etc.)
- Salt spray corrosion resistance ISO 9227 > 600 horas
- Higher corrosion resistance than hot dip galvanized (HDG) 45 μm thick.
![](https://www.indexfix.com/wp-content/uploads/2023/12/faq-atlantis3.webp)
![](https://www.indexfix.com/wp-content/uploads/2023/12/faq-atlantis4.webp)
Test of 1440 hours according to ASTM-B117 in water. Left: Atlantis; right: HDG 45 μm
![](https://www.indexfix.com/wp-content/uploads/2023/12/faq-atlantis5.webp)
![](https://www.indexfix.com/wp-content/uploads/2023/12/faq-atlantis6.webp)
Test of 1440 hours according to ASTM-G85. Left: Atlantis; right: HDG 45 μm
Latest revision: FAQ9 rev0