Predicted Service Life
Zinga has been tested to ISO12944:2018 and supersedes the 2007 standard.
ISO 12944 is one of the most important international standards for the protection of steel against corrosion by paints systems.
ISO 12944-1 Durability
Part 1 defines the overall scope and gives some basic terms and definitions, including the durability's:
| Durability | Previous | New |
| Low Durability (L) | 2 to 5 years | up to 7 years |
| Medium Durability (M) | 5 to 15 years | 7 to 15 years |
| High Durability (H) | more than 15 years | 15 to 25 years |
| Very High Durability (VH) | - | more than 25 years |
12944-2 Classifications of Enviroments
Part 2 deals with the classification of the principal environments to which steel structures are exposed Those environments are based on the mass (or thickness) loss by standard specimens and describes typical natural environments for atmospheric conditions:
| Corrosion category - atmosperic |
| C1 - Very Low | No Changes |
| C2 - Low | No Changes |
| C3 - Medium | No Changes |
| C4 - High | No Changes |
|
C5-I Very high (industrial)
C5-M Very high (marine) |
C5-I and C5-M are joined. C5 stands for offshore areas with high salinity and aggressive industrial areas |
| CX | This new category CX extreme is used for off shore constructions |
A new category for water and soil immersion:
| Category | Environment | Example/Explanation |
| Im1 | Fresh water | River installations |
| Im2 | Sea or brakish water | Immersed structures without cathodic protection |
| Im3 | Soil | Buried tanks, buried piles |
| Im4 | Sea or brakish water | Immersed structures with cathodic protection |
Certifications of Zinga only systems
| Layer thickness | Category | Durability | Neutral salt spray (h) | Cyclic ageing test (h) |
| ZINGA® 80 - 100 µm |
C4
C5 |
High
Medium |
720 | - |
| ZINGA® 120 µm | C5 | Very High | - | 2688 |
| ZINGA® 120 µm | CX | High | - | 4200 |
| ZINGALU 110 µm |
C4
C5 |
Very High
High |
1440 | - |
| Layer thickness | Category | Durability | Seawater immersion test (h) |
| ZINGA® 120 µm | Im4 | High | 4200 |
Certifications of Zinga plus top coats
| System | Category | Durability | Neutral salt spray (h) | Water immersion |
| Zinga 60µm + Zingalufer 80µm | C5 | High | 1440 | - |
| Zinga 60µm + Zingaceram HS 120µm | C5 | High | 1440 | - |
| Zinga 60µm + Zingalufer 80µm + Zingaceram PU 60µm | C5 | High | 1440 | - |
| Zinga 60µm + Zingaceram HS 120µm + Zingaceram PU 60µm | C5 | High | 1440 | - |
| Zinga 60µm + Zingatarfree 2 x 100µm | Im2/3 | High | 1440 | 3000 |
What Is Zinga?
Zinga was originally invented in Ghent University, Belgium, in the 1970's and has since been used in a wide variety of projects throughout the world...
HOW ZINGA WORKS
Cathodic protection, or active protection, arises from the zinc (the anode) sacrificing itself in favour of the base metal (the cathode) with the resulting flow of electrons preventing corrosion's...
