A solvent-free, 2-part epoxy coating designed to provide outstanding protection to hot metal surfaces against corrosion under insulation (CUI). This surface-tolerant coating can be applied by brush directly onto hot metal surfaces from 30°C to 80°C (86°F – 176°F) with minimal preparation required.
Key benefits:
- In-situ application by brush on live equipment operating at high temperatures with minimal surface preparation
- Excellent corrosion under insulation (CUI) protection of surfaces up to 80°C (176°F)
- Reduced health and safety risks as it is solvent-free
- Fast cure allowing equipment to be re-insulated with minimum delay
- Good chemical resistance against a wide range of chemicals
- Excellent adhesion even to manually prepared metals including stainless steel, carbon steel, aluminium, brass and copper
- Good adhesion to Belzona 5851 (HA-Barrier)* coating in overlap areas
Applications for Belzona 5841 include:
- Prevention of corrosion under insulation (CUI)
- Long-term corrosion protection of hot pipework and process equipment
- In-situ external coating of process vessels operating at high temperature during service, avoiding production downtime
*Also available is heat activated Belzona 5851 (HA-Barrier) coating, suitable for applications onto hot surfaces up to 150°C (302°F).
Key technical data: |
|
|---|---|
| Working life at 20°C (68°F) | 1 hour |
| Time to full cure 80°C (176°F) | 8 hours |
| Coverage rate at 80°C (176°F) | Theoretical coverage rate for a 2 coat system: 4.98 sq.m. (53.6 sq.ft.) per kilogram at 80°C (176°F) per coat |
| Heat resistance | Up to 80°C (176°F) |
| Heat distortion temperature (tested per ASTM D648) | 95°C (203°F) after 7 days cure at 80°C (176°F) |
| Bonds to | Aluminium, copper, steel, stainless steel, cast iron, and other metals |
| Typical applications | Prevention of CUI, surface-tolerant coating for live process equipment |
| Unit size | 1 kg, 8 kg. Unit sizes may vary locally. |
| Availability* | Global |
