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Independent test evidence
AQUATA® tested by BAW Karlsruhe
In 2011 the German Federal Waterways Engineering and Research Institute (BAW) tested an AQUATA® coating system for steel. The result: it meets the requirements for a long protection duration, 15 years or more, under ISO 12944-6 for fresh water, sea and brackish water, and soil.
Verdict
Long protection duration (15 years or more) per ISO 12944-6.
Im1
Fresh water
Im2
Sea and brackish water
Im3
Soil
Tests and results
| Test | Method | Duration |
|---|---|---|
| Immersion in fresh water | ISO 2812-2 | 3,000 h |
| Immersion in 5 % NaCl solution | ISO 2812-2 | 3,000 h |
| Condensation (humidity) | ISO 6270-1 | 1,440 h |
| Neutral salt spray | ISO 9227 | 1,440 h |
- No blistering, rusting, cracking or flaking after any of the tests (all rated grade 0).
- Pull-off adhesion between 4.1 and 12.5 MPa (ISO 4624).
- Undercutting at the scribe: 0.5 mm.
What was tested
A two-component zinc primer of about 50 µm, covered with about 600 µm of AQUATA®, on St 37 steel blast cleaned to Sa 2½ (total about 650 µm). This is the tested build-up. The Vianden hydropower station was coated to a different specification: two coats, 800 µm in total.
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