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Belzona 5851 (HA-Barrier)

A solvent free, single component epoxy coating, which cures in contact with hot surfaces and is designed to prevent or protect metal from corrosion under insulation (CUI). Belzona 5851 (HA-Barrier) can be easily applied by brush and does not require any weighing or mixing.

This heat activated material can be applied directly onto hot surfaces (70-150°C / 158-302°F) with minimal surface preparation, avoiding production downtime. Once cured, it provides outstanding corrosion protection. Also available is Belzona 1251 (HA-Barrier), a heat-activated epoxy repair composite which can be used in fill pitting and bond equipment among other applications.

Key benefits:

  • In-situ application to live equipment operating at high temperature with minimal surface preparation
  • Single pack system, no weighing or mixing required
  • Reduced health and safety risks as it is solvent free and no hot work is required
  • Fast cure  allowing equipment to be re-insulated with minimum delay
  • Excellent corrosion protection
  • Good chemical resistance against a wide range of chemicals
  • Excellent adhesion to (even to manually prepared) metals including stainless steel, carbon steel, aluminium, brass and copper
  • Thermally stable up to 150°C (302°F) in dry conditions

Applications for Belzona 5851 (HA-Barrier) include:

  • Prevention of corrosion under insulation (CUI)
  • Long-term corrosion protection of hot pipework and process equipment
  • In-situ external coating of process vessels during service operating at high temperature avoiding production downtime
KEY TECHNICAL DATA:
Working life Unlimited *cure will not commence until the product is heated
Time to full cure 100°C (212°F) 2 days
Coverage rate (1kg) 2.4 m2 (25 sq.ft.) at 200 microns (8 mils) per coat
Volume capacity (1kg) 476 cm3 (29 cu.in.)
Heat resistance Up to 150°C (302°F)
Heat distortion temperature (tested per ASTM D648) 127°C (261°F) after 7 days cure at 100°C (212°F)
Bonds to Aluminium, copper, steel, stainless steel, cast iron, and other metals
Typical applications Protection against CUI problems, heat activated coating for live process equipment

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