1. Why C5-M
Coastal and offshore structures face salt-laden air, high humidity, and daily thermal cycling. C5-M (very high corrosivity, marine) demands a robust, validated system rather than a generic primer.
2. A Proven Stack
A typical C5-M build is 80% zinc-rich epoxy primer + MIO epoxy intermediate + fluorocarbon or PU topcoat, with total DFT around 280–320 µm. The zinc primer gives cathodic protection; MIO adds barrier; the topcoat locks in weathering resistance.
3. Standards and Proof
Require evidence: salt-spray resistance of 3000 h or more, cyclic-corrosion testing, and adhesion data. Ask suppliers for the full TDS/SDS and inter-coat compatibility notes.
4. Field Notes
Pilot references on rail spans and North-Sea terminal handling areas show stable performance under continuous salt exposure when the system and surface prep are correctly specified.
Need the full TDS/SDS or a custom formulation consultation? Contact our technical team.